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hypericum

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Description

Hypericum: Genus of perennial plants in the family CLUSIACEAE (sometimes classified as Hypericaceae). Herbal and homeopathic preparations are used for depression, neuralgias, and a variety of other conditions. Hypericum contains flavonoids; GLYCOSIDES; mucilage, TANNINS; volatile oils (OILS, ESSENTIAL), hypericin and hyperforin. [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]

6-formamidopenicillanic acid : A penicillanic acid having a (6R)-formamido substituent. [Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

FloraRankFlora DefinitionFamilyFamily Definition
ClusiaceaefamilyThe mangosteen plant family (sometimes classified as Guttiferae; also known as Hypericaceae) of the order THEALES, subclass Dilleniidae, class Magnoliopsida. It includes trees and shrubs with resinous, sticky sap, usually with broad-ended, oblong, leathery leaves with a strong, central vein, flowers with many stamens.[MeSH]ClusiaceaeThe mangosteen plant family (sometimes classified as Guttiferae; also known as Hypericaceae) of the order THEALES, subclass Dilleniidae, class Magnoliopsida. It includes trees and shrubs with resinous, sticky sap, usually with broad-ended, oblong, leathery leaves with a strong, central vein, flowers with many stamens.[MeSH]
HypericumgenusGenus of perennial plants in the family CLUSIACEAE (sometimes classified as Hypericaceae). Herbal and homeopathic preparations are used for depression, neuralgias, and a variety of other conditions. Hypericum contains flavonoids; GLYCOSIDES; mucilage, TANNINS; volatile oils (OILS, ESSENTIAL), hypericin and hyperforin.[MeSH]Hypericaceae[no description available]

Cross-References

ID SourceID
PubMed CID9548591
CHEBI ID59004
SCHEMBL ID11176911
MeSH IDM0328541

Synonyms (24)

Synonym
6beta-formylaminopenicillanic acid
(2s,5r,6r)-6-formamido-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid
6-formamidopenicillanic acid
6-formamido-2,2-dimethylpenam-3alpha-carboxylic acid
CHEBI:59004 ,
64527-04-4
hypericum
CTK2F8101 ,
EPITOPE ID:119700
141a/2a
2TC14ZH3A5 ,
6-formamido-2,2-dimethylpenam-3.alpha.-carboxylic acid
4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-(formylamino)-3,3-dimethyl-7-oxo-, (2s,5r,6r)-
(2s,5r,6r)-6-formamido-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid
his-1201
4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-(formylamino)-3,3-dimethyl-7-oxo-, (2s-(2.alpha.,5.alpha.,6.beta.))-
pab 141
SCHEMBL11176911
DTXSID90429524
AKOS030255133
unii-2tc14zh3a5
4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-(formylamino)-3,3-dimethyl-7-oxo-, (2s-(2alpha,5alpha,6beta))-
Q27126392
4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid,6-(formylamino)-3,3-dimethyl-7-oxo-, (2s,5r,6r)-

Research Excerpts

Overview

Hypericum perforatum L. is a traditional Chinese medicine used to sooth the liver, relieve depression, reduce body temperature, reduce sweating, and stimulate lactation. Hypericum roeperianum is a medicinal spice traditionally used in West Africa to treat female sterility, fungal infections, and cancer.

ExcerptReferenceRelevance
"Hypericum perforatum L. is a traditional Chinese medicine used to sooth the liver, relieve depression, reduce body temperature, reduce sweating, and stimulate lactation. "( Anti-fatigue effect of hypericin in a chronic forced exercise mouse model.
Li, Y; Li, Z; Liang, C; Liu, L; Sun, Y; Yang, G; Zheng, L, 2022
)
2.16
"Hypericum hengshanense is a previously uninvestigated endemic plant species of China. "( New Aclyphloroglucinols and geranyl-α-pyrones from Hypericum hengshanense.
Cheng, H; Han, Q; Hossseini, MMZ; Kang, L; Sefidkon, F; Shu, G; Wang, S; Yang, X; Zhou, T; Zhou, X, 2022
)
2.42
"Hypericum roeperianum is a medicinal spice traditionally used in West Africa to treat female sterility, fungal infections, and cancer. "( Hypericum roeperianum bark extract suppresses breast cancer proliferation via induction of apoptosis, downregulation of PI3K/Akt/mTOR signaling cascade and reversal of EMT.
Damen, F; Das, G; Guefack, MF; Guha, S; Kuete, V; Mitra, D; Mukherjee, R; Murmu, N; Saha, D; Talukdar, D, 2024
)
4.33
"Hypericum erectum is an important ethnobotanical medicine in East Asian tradition. "( Hypericum erectum alcoholic extract inhibits Toxoplasma growth and Entamoeba encystation: an exploratory study on the anti-protozoan potential.
Hikosaka, K; Ishimaru, K; Mi-Ichi, F; Nakayama, H; Norose, K; Shinjyo, N; Yoshida, H, 2020
)
3.44
"Hypericum perforatum L is a remarkable source of high-value secondary metabolites with increasing applications in pharmaceutical industry. "( Overexpression of polygalacturonase-inhibiting protein (PGIP) gene from Hypericum perforatum alters expression of multiple defense-related genes and modulates recalcitrance to Agrobacterium tumefaciens in tobacco.
Aguilar, E; Canto, T; Dias, ACP; Franklin, G; Hou, W; Martins, V; Singh, RK; Tenllado, F; Zhao, P, 2020
)
2.23
"Hypericum L. is a genus of the family Hypericaceae within the dicotyledones. "( The Phytochemistry and Pharmacology of Hypericum.
Gibbons, S; Mu, Q; Xiao, CY, 2020
)
2.27
"Hypericum perforatum L is a promising chemopreventive agent and further studies are needed in order to evaluate the full potential of this plant."( Evaluation of the chemopreventive effects of Hypericum perforatum L on DMBA-applied rat oral mucosa.
Fırat, A; Karaca, İR; Kaymaz, FF; Öztürk, HS; Saraç, N; Şengün, DN; Uğur, A, 2021
)
2.32
"Hypericum stellatum is an important ethnomedicinal plant endemic to southwest China. "( [Chemical constituents of Hypericum stellatum and their antioxidant bioactivities].
Ji, YY; Long, CL, 2018
)
2.22
"Hypericum lydium Boiss. is a perennial plant of the Hypericaceae family, which has been used in particular to treat depression. "( In vitro antioxidant assessment, screening of enzyme inhibitory activities of methanol and water extracts and gene expression in Hypericum lydium.
Akpulat, HA; Eruygur, N; Kahrizi, D; Safavi, SM; Shahsavari, K; Ucar, E, 2019
)
2.16
"Hypericum perforatum is a perennial herb that produces the anti-depression metabolite hypericin (Hyp). "( Temperature-dependent growth and hypericin biosynthesis in Hypericum perforatum.
Jin, L; Kang, T; Li, M; Liu, Z; Sun, P; Xing, H; Yao, Y; Zhang, Z, 2019
)
2.2
"Hypericum perforatum L. is a medicinal plant considered as an important natural source of secondary metabolites with a wide range of pharmacological attributes. "( Phenolic profile of dark-grown and photoperiod-exposed Hypericum perforatum L. Hairy root cultures.
Petreska Stanoeva, J; Simic, SG; Stefova, M; Tusevski, O, 2013
)
2.08
"Hypericum perforatum is a medicinal plant with anti-inflammatory and antioxidant properties, which is commercially available for therapeutic use in Brazil. "( Hypericum perforatum Reduces Paracetamol-Induced Hepatotoxicity and Lethality in Mice by Modulating Inflammation and Oxidative Stress.
Arakawa, NS; Cardoso, RD; Casagrande, R; Fattori, V; Hohmann, MS; Lopes, NP; Tomaz, JC; Verri, WA, 2015
)
3.3
"Hypericum extract is a potential alternative to phenobarbital in patients with CN type II."( Reduction of hyperbilirubinemia with hypericum extract (St. John's Wort) in a patient with Crigler-Najjar syndrome type II.
Hammann, F; Haschke, M; Krähenbühl, S; Kummer, O, 2016
)
2.15
"Hypericum perforatum is a perennial medicinal plant known as "St. "( Pseudohypericin and hyperforin in Hypericum perforatum from Northern Turkey: variation among populations, plant parts and phenological stages.
Cirak, C; Ivanauskas, L; Janulis, V; Radusiene, J, 2008
)
2.07
"Hypericum perforatum is a medicinal plant with established antidepressant properties. "( Efficacy and tolerability of Hypericum perforatum in major depressive disorder in comparison with selective serotonin reuptake inhibitors: a meta-analysis.
Abdollahi, M; Nikfar, S; Rahimi, R, 2009
)
2.09
"Hypericum perforatum is an important medicinal plant containing numerous biologically active compounds. "( Chitosan enhances xanthone production in Hypericum perforatum subsp. angustifolium cell cultures.
Ferrari, F; Pasqua, G; Rovardi, I; Santamaria, AR; Tocci, N; Valletta, A, 2010
)
2.07
"Hypericum perforatum is a medicinal plant that contains high amounts of phenolic compounds, of which hypericins, hyperforins, and flavonoids contribute to the antidepressant activities of the plant."( Optimization of protein extraction from Hypericum perforatum tissues and immunoblotting detection of Hyp-1 at different stages of leaf development.
Hohtola, A; Karppinen, K; Taulavuori, E, 2010
)
1.35
"Hypericum perforatum is a medicinal plant species containing many polyphenolic compounds, namely flavonoids and phenolic acids. "( Effects of Hypericum Perforatum, in a rodent model of periodontitis.
Briguglio, E; Cordasco, G; Cuzzocrea, S; Galuppo, M; Mazzon, E; Oteri, G; Paterniti, I, 2010
)
2.19
"Hypericum perforatum is a well-known medicinal plant which contains a wide variety of metabolites, including xanthones, which have a wide range of biological properties, including antifungal activity. "( Root cultures of Hypericum perforatum subsp. angustifolium elicited with chitosan and production of xanthone-rich extracts with antifungal activity.
D'Auria, FD; Palamara, AT; Panella, S; Pasqua, G; Simonetti, G; Tocci, N; Valletta, A, 2011
)
2.15
"Hypericum is a plant genus that contains species known to have antimicrobial properties."( Inhibition of bacterial growth and biofilm production by constituents from Hypericum spp.
Henry, GE; Janssen, MJ; Laplante, KL; Matta, H; Rowley, DC; Sarkisian, SA, 2012
)
1.33
"Hypericum perforatum is a medicinal herb possessing ability for protecting neurons from oxidative stress. "( SNP-mediated neuroprotection under glucose deprivation is enhanced by Hypericum perforatum.
Benedí, J; Bermejo-Bescós, P; Martín-Aragón, S; Muñoz, M; Romero, C, 2012
)
2.06
"Hypericum perforatum is a well-known medicinal plant. "( A three-step culture system to increase the xanthone production and antifungal activity of Hypericum perforatum subsp. angustifolium in vitro roots.
D'Auria, FD; Palamara, AT; Panella, S; Pasqua, G; Simonetti, G; Tocci, N, 2012
)
2.04
"Hypericum androsaemum is a medicinal plant species containing many polyphenolic compounds, namely flavonoids and phenolic acids. "( Antioxidant activity of Hypericum androsaemum infusion: scavenging activity against superoxide radical, hydroxyl radical and hypochlorous acid.
Andrade, PB; Carvalho, F; de Lourdes Bastos, M; Fernandes, E; Seabra, RM; Valentão, P, 2002
)
2.06
"Hypericum L. is a genus of about 400 species, widespread throughout the world."( The in vitro effects of Hypericum species on human leukocyte myeloperoxidase activity.
Baş, M; Konyalioğlu, S; Meral, GE; Pabuçcuoğlu, A, 2003
)
1.35
"Hypericum perforatum is an herbaceous perennial plant, also known as "St. "( A review of clinical and experimental observations about antidepressant actions and side effects produced by Hypericum perforatum extracts.
Contreras, CM; Rodríguez-Landa, JF, 2003
)
1.97
"Hypericum brasiliense is a medicinal herb containing several compounds with important pharmacological activity. "( Effect of water and temperature stress on the content of active constituents of Hypericum brasiliense Choisy.
Mazzafera, P; Nacif de Abreu, I, 2005
)
2
"Hypericum perforatum is a medicinal plant species containing many polyphenolic compounds, namely flavonoids and phenolic acids."( Effects of Hypericum perforatum extract in a rat model of ischemia and reperfusion injury.
Caputi, AP; Crisafulli, C; Cuzzocrea, S; De Paola, R; Genovese, T; Mazzon, E; Menegazzi, M; Muià, C; Suzuki, H, 2005
)
1.44
"Hypericum perforatum is a medicinal plant species containing many polyphenolic compounds, namely flavonoids and phenolic acids. "( Hypericum perforatum attenuates the development of carrageenan-induced lung injury in mice.
Crisafulli, C; Cuzzocrea, S; Di Paola, R; Genovese, T; Mazzon, E; Menegazzi, M; Muià, C; Suzuki, H, 2006
)
3.22
"Hypericum perforatum is a medicinal plant species containing many polyphenolic compounds, namely flavonoids and phenolic acids."( Hypericum perforatum attenuates the development of cerulein-induced acute pancreatitis in mice.
Crisafulli, C; Cuzzocrea, S; Di Paola, R; Genovese, T; Malleo, G; Mazzon, E; Menegazzi, M; Muià, C; Suzuki, H, 2006
)
2.5
"Hypericum perforatum is a medicinal plant species containing many polyphenolic compounds, namely, flavonoids and phenolic acids."( Neuroprotection and enhanced recovery with hypericum perforatum extract after experimental spinal cord injury in mice.
Bramanti, P; Crisafulli, C; Cuzzocrea, S; Di Paola, R; Genovese, T; Mazzon, E; Menegazzi, M; Muià, C; Suzuki, H, 2006
)
1.32
"Hypericum perforatum is a medicinal plant species containing many polyphenolic compounds, namely flavonoids and phenolic acids. "( Protective effect of Hypericum perforatum in zymosan-induced multiple organ dysfunction syndrome: relationship to its inhibitory effect on nitric oxide production and its peroxynitrite scavenging activity.
Crisafulli, C; Cuzzocrea, S; Di Bella, P; Di Paola, R; Esposito, E; Genovese, T; Mazzon, E; Meli, R; Menegazzi, M; Muià, C; Suzuki, H, 2007
)
2.1
"Hypericum perforatum is a perennial herbaceous plant and an extract from this plant has a significant antidepressant effect when administered to humans. "( Plant-environment interactions: Accumulation of hypericin in dark glands of Hypericum perforatum.
Afreen, F; Goto, E; Kozai, T; Zobayed, SM, 2006
)
2.01
"Hypericum perforatum L. is a kind of traditional herbal medicine that has been used as an anti-depression medicine in Europe for centuries. "( [The development of secondary cells in the callus of Hypericum perforatum L. and hypericins accumulation].
Lv, HF; Song, X; Zhu, J, 2007
)
2.03
"Hypericum is a nonspecific inhibitor of the neuronal uptake of monoamines (serotonin, 5-HT; noradrenaline, NA; dopamine, DA) as well as GABA and glutamate."( Effects of Hypericum perforatum (St. John's wort) on passive avoidance in the rat: evaluation of potential neurochemical mechanisms underlying its antidepressant activity.
Misane, I; Ogren, SO, 2001
)
1.42
"Hypericum is a large genus comprising 200 species, wide spread on temperate region and tropical mountains. "( CNS active potentials of some Hypericum species of India.
Mukherjee, PK; Suresh, B; Verpoorte, R, 2001
)
2.04

Effects

Hypericum species have been used traditionally as astringent, antipyretic, diuretic, antiphlogistic, analgesic, and antidepressant in Europe, America, Africa, and Asia. Hypericum capitatum has been known for its curative effects for centuries.

ExcerptReferenceRelevance
"Hypericum capitatum has been known for its curative effects for centuries and its extracts have become of interest due to their distinct activity among other Hypericaceae members."( Remarkable rutin-rich Hypericum capitatum extract exhibits anti-inflammatory effects on turpentine oil-induced inflammation in rats.
Farcas, AD; Kulak, M; Mot, AC; Parvu, A; Sevastre, B; Silaghi-Dumitrescu, R; Ticolea, M; Zagrean-Tuza, C, 2019
)
1.55
"Hypericum species have been used traditionally as astringent, antipyretic, diuretic, antiphlogistic, analgesic, and antidepressant in Europe, America, Africa, and Asia. "( Ethnopharmacology of Hypericum species in China: A comprehensive review on ethnobotany, phytochemistry and pharmacology.
Ji, Y; Kennelly, EJ; Long, C; Zhang, R; Zhang, X, 2020
)
2.32
"Hypericum perforatum L. has been recognized as a medicinally valuable plant for over 2000 years."( Hypericum perforatum L.: a medicinal plant with potential as a curative agent against obesity-associated complications.
Altan, F; Tokgöz, HB, 2020
)
2.72
"Hypericum perforatum L. has been widely used as a natural antidepressant. "( Hypericum perforatum extract and hyperforin inhibit the growth of neurotropic parasite Toxoplasma gondii and infection-induced inflammatory responses of glial cells in vitro.
Hikosaka, K; Ishimaru, K; Li, L; Nakayama, H; Norose, K; Shinjyo, N; Suzuki, N; Yoshida, H, 2021
)
3.51
"Hypericum patulum has been used as a folk medicine for its varied therapeutic effects including antifungal, wound-healing, spasmolytic, stimulant, hypotensive activities. "( Flavonoids from Hypericum patulum enhance glucose consumption and attenuate lipid accumulation in HepG2 cells.
Bai, ZH; Chen, W; Duan, JY; He, LL; Li, EC; Wang, YJ; Zhang, CP; Zhao, YQ, 2021
)
2.41
"Hypericum perforatum has been reported as an antidepressant, antiviral, antimicrobial, anti-inflammatory, and a healing agent."( Do other Hypericum species have medical potential as St. John's wort (Hypericum perforatum)?
Šmelcerović, A; Stojanović, G; Ðorđević, A, 2013
)
1.53
"Hypericum (H.) spp. has been used in traditional medicine for their anticonvulsant effect for many years. "( Anticonvulsant activity of Hypericum scabrum L.; possible mechanism involved.
Ahangar, N; Ebrahimzadeh, MA; Nabavi, SF; Nabavi, SM, 2013
)
2.13
"Hypericum ascyron L. has been used as a traditional medicine for the treatment of wounds, swelling, headache, nausea and abscesses in China for thousands of years. "( Antibacterial active compounds from Hypericum ascyron L. induce bacterial cell death through apoptosis pathway.
He, JF; Li, XM; Luo, XG; Si, CL; Wang, N; Zhang, TC; Zhou, H, 2015
)
2.13
"Hypericum perforatum L. has been used for centuries as a natural remedy for the treatment of many disorders. "( Effects of Hypericum perforatum extract on oxaliplatin-induced neurotoxicity: in vitro evaluations.
Cinci, L; Di Cesare Mannelli, L; Ghelardini, C; Maidecchi, A; Mattoli, L, 2017
)
2.29
"Hypericum perforatum L. has been used traditionally as an antidepressant for the treatment of mild to moderate depression. "( Protective effects of a flavonoid-rich extract of Hypericum perforatum L. against hydrogen peroxide-induced apoptosis in PC12 cells.
Lu, YH; Wei, DZ; Zou, YP, 2010
)
2.06
"Hypericum perforatum has been used in folk medicine to improve mental performance."( Effects of Hypericum perforatum extract on diabetes-induced learning and memory impairment in rats.
Hasanein, P; Shahidi, S, 2011
)
1.48
"Hypericum spp. (H.) has been used in traditional medicine for their sedative effect for many years. "( Pharmacological activities of Hypericum scabrum L.
Ebrahimzadeh, MA; Eslami, B; Mahmoudi, M; Nabav, SM; Nabavi, SF, 2011
)
2.1
"Hypericum extracts have been regarded as antidepressant drugs without specific side effects by patients, medical professionals and researchers alike. "( Safety of Hypericum extract in mildly to moderately depressed outpatients: a review based on data from three randomized, placebo-controlled trials.
Dienel, A; Trautmann-Sponsel, RD, 2004
)
2.17
"Hypericum has been favorably compared to numerous antidepressant drugs, the studies having revealed equivalent results and a much more favorable incidence of side effects."( St. John's Wort (Hypericum perforatum): clinical effects on depression and other conditions.
Miller, AL, 1998
)
1.36
"Hypericum extracts have been shown to be active in several different "animal models for antidepressant drugs"."( Effects of Hypericum perforatum (St. John's wort) on passive avoidance in the rat: evaluation of potential neurochemical mechanisms underlying its antidepressant activity.
Misane, I; Ogren, SO, 2001
)
1.42

Actions

ExcerptReferenceRelevance
"Hypericum can lower the plasma levels of simultaneously administered drugs by induction of metabolism. "( [Drug interactions of Hypericum perforatum (St. John's wort) are potentially hazardous].
Baede-van Dijk, PA; Lekkerkerker, JF; van Galen, E, 2000
)
2.06

Treatment

Treatment with Hypericum perforatum is an efficient way of reducing hot flashes, menopausal symptoms, and depression in postmenopausal women. Treatment with hypericum seems to disinhibit the hypothalamus-pituitary-adrenocortical-system.

ExcerptReferenceRelevance
"Hypericum treatment (12 and 25 mg/kg) improved learning and memory in control rats and reversed learning and memory deficits in diabetic rats."( Effects of Hypericum perforatum extract on diabetes-induced learning and memory impairment in rats.
Hasanein, P; Shahidi, S, 2011
)
1.48
"Treatment with Hypericum perforatum is an efficient way of reducing hot flashes, menopausal symptoms, and depression in postmenopausal women."( The effect of Hypericum perforatum on postmenopausal symptoms and depression: A randomized controlled trial.
Abedi, P; Ansari, S; Eatemadnia, A; Najar, S, 2019
)
1.23
"Treatment with Hypericum perforatum and neem oil was started in case of G2 acute skin toxicity according to the RTOG/EORTC scoring scale and continued during the whole treatment course and thereafter until complete recovery."( Management of acute skin toxicity with Hypericum perforatum and neem oil during platinum-based concurrent chemo-radiation in head and neck cancer patients.
Airoldi, M; Arcadipane, F; Cavallin, C; Fasolis, M; Franco, P; Garzino Demo, P; Martini, S; Ostellino, O; Pecorari, G; Rampino, M; Ricardi, U; Schena, M, 2017
)
1.06
"Treatment with hypericum seems to disinhibit the hypothalamus-pituitary-adrenocortical-system in healthy subjects and patients with a depression."( [Atypical depression and related illnesses--neurobiological principles for their treatment with Hypericum extract].
Murck, H, 2002
)
0.87
"Treatment with Hypericum perforatum extract (HPE) resulted in an inhibition of monoamine oxidase-B (MAO-B) activity and reduced astrocyte activation in striatal area induced by MPTP."( Modulating effect of Hypericum perforatum extract on astrocytes in MPTP induced Parkinson's disease in mice.
Mohanasundari, M; Sabesan, M,
)
0.79
"Treatment with hypericum extract is safe and improves quality of life."( Hypericum extract versus imipramine or placebo in patients with moderate depression: randomised multicentre study of treatment for eight weeks.
Hiller, KO; Kohnen, R; Philipp, M, 1999
)
2.09

Toxicity

Adverse reactions to Hypericum extract include skin reddening and itching, dizziness, constipation, fatigue, anxiety, and tiredness. The safety and tolerability of hypericum extract in comparison to citalopram and placebo was investigated.

ExcerptReferenceRelevance
" John's wort (SJW) is largely unsupervised and unexplored, and can potentially lead to adverse outcomes."( Consumer use of St. John's wort: a survey on effectiveness, safety, and tolerability.
Beckman, SE; Sommi, RW; Switzer, J, 2000
)
0.31
" John's wort have recorded an incidence of adverse events (AE) among those treated of between 1 and 3%."( Incidence and clinical relevance of the interactions and side effects of Hypericum preparations.
Schulz, V, 2001
)
0.54
" These herbs have a pharmacological activity, adverse effects and interactions with conventional drugs, which can produce changes in mood, cognition, and behavior."( [The safety of herbal medicines in the psychiatric practice].
Boniel, T; Dannon, P, 2001
)
0.31
" Adverse reactions to Hypericum extract in the clinical treatment of depression include skin reddening and itching, dizziness, constipation, fatigue, anxiety, and tiredness."( Final report on the safety assessment of Hypericum perforatum extract and Hypericum perforatum oil.
, 2001
)
0.89
" Its high efficacy and tolerability is unquestionable and from the clinical studies the activity is comparable to other antidepressants while lacking major side effects, making it a safe antidepressant."( St. John's wort and depression: efficacy, safety and tolerability-an update.
Bilia, AR; Gallori, S; Vincieri, FF, 2002
)
0.31
" None of them is free of adverse effects."( [Herbal preparations have both effects and side effects. Widespread usage dictates knowledge among physicians].
Mattsson, K; Nilsson, I, 2002
)
0.31
" This evidence-based presentation of the literature includes a brief description of pharmacodynamics and clinical applications, followed by a systematic review of adverse effects, toxicity, and drug interactions."( St John's wort: a systematic review of adverse effects and drug interactions for the consultation psychiatrist.
Barrette, EP; Basch, E; Basch, S; Bent, S; Boon, H; Ernst, E; Foppa, I; Hammerness, P; Ulbricht, C,
)
0.13
" John's wort, maternal and infant adverse events, infant weight over the first year of life, and whether or not the mother experienced a decrease in lactation."( The safety of St. John's wort (Hypericum perforatum) during breastfeeding.
Ito, S; Lam, M; Lee, A; Matsuda, N; Minhas, R, 2003
)
0.6
"There were no statistically significant differences found in maternal or infant demographics or maternal adverse events."( The safety of St. John's wort (Hypericum perforatum) during breastfeeding.
Ito, S; Lam, M; Lee, A; Matsuda, N; Minhas, R, 2003
)
0.6
"To investigate the tolerability of Hypericum extract by comparing adverse event rates observed during clinical trials with the herbal drug to those observed under placebo and synthetic antidepressants."( Safety of Hypericum extract in mildly to moderately depressed outpatients: a review based on data from three randomized, placebo-controlled trials.
Dienel, A; Trautmann-Sponsel, RD, 2004
)
1
" For the polled data from the three trials, the risk ratios and risk differences versus placebo for single and grouped adverse events were determined along with their 95% confidence intervals."( Safety of Hypericum extract in mildly to moderately depressed outpatients: a review based on data from three randomized, placebo-controlled trials.
Dienel, A; Trautmann-Sponsel, RD, 2004
)
0.73
"For the polled data of the three trials, the percentage of patients with any adverse events under Hypericum extract exposition was comparable to placebo."( Safety of Hypericum extract in mildly to moderately depressed outpatients: a review based on data from three randomized, placebo-controlled trials.
Dienel, A; Trautmann-Sponsel, RD, 2004
)
0.94
" Some herbal medications have potentially harmful side effects as well as adverse interactions with conventional drugs."( [Potential risks, adverse effects and drug interactions associated with herbal medicine in dental patients].
Littner, M; Zlotogorski Hurvitz, A, 2004
)
0.32
"To obtain an overview of the available clinical evidence on safety and tolerability of hypericum extracts, we reviewed (1) dropout rates and adverse effects in double-blind randomized trials comparing hypericum extracts and placebo or synthetic standard antidepressants; (2) dropout rates and adverse effects in large-scale observational studies; and (3) adverse effects reported in published cases and to public drug surveillance agencies."( Adverse effects of St. John's Wort: a systematic review.
Knüppel, L; Linde, K, 2004
)
0.55
"Data on dropout rates and adverse effects were extracted from double-blind randomized trials of hypericum monopreparations collected for a Cochrane review (last search July 2003) and from a PubMed search (text word hypericum; search dates 1998-January 2003)."( Adverse effects of St. John's Wort: a systematic review.
Knüppel, L; Linde, K, 2004
)
0.54
"Data from 35 double-blind randomized trials showed that dropout and adverse effects rates in patients receiving hypericum extracts were similar to placebo, lower than with older antidepressants, and slightly lower than with selective serotonin reuptake inhibitors."( Adverse effects of St. John's Wort: a systematic review.
Knüppel, L; Linde, K, 2004
)
0.53
"The available evidence suggests that hypericum extracts are well tolerated and safe if taken under control of a physician who is aware of potentially relevant risks in specific circumstances."( Adverse effects of St. John's Wort: a systematic review.
Knüppel, L; Linde, K, 2004
)
0.6
" Altogether, the examples presented illustrate that natural does not equal safe and that in modern society adverse health effects, upon either acute or chronic exposure to phytochemicals, can occur as a result of use of plant- or herb-based foods, teas, or other extracts."( Molecular mechanisms of toxicity of important food-borne phytotoxins.
Alink, GM; Boersma, MG; Martena, MJ; Rietjens, IM; Spiegelenberg, W, 2005
)
0.33
" After reviewing these studies, it is evident that these drugs appear to be relatively safe to take during pregnancy."( The safety of antidepressant use in pregnancy.
Born, L; Einarson, A; Kalra, S; Sarkar, M, 2005
)
0.33
"To investigate the clinical effect of administering sufficient Hypericum perforatum to cattle to deliver quadruple the reported oral toxic dose."( Reassessment of the toxicity of Hypericum perforatum (St John's wort) for cattle.
Bourke, CA; White, JG, 2004
)
0.85
" perforatum does not seem to be toxic to the mother."( [Evaluation of Hypericum perforatum toxicity when administered to pregnant rats].
Borges, LV; Carmo, JC; Guerra, Mde O; Las Casas, L; Peters, VM,
)
0.48
" Adverse reactions to herbal remedies should be reported to the FDA MedWatch at http://www."( Toxicity and drug interactions associated with herbal products: ephedra and St. John's Wort.
Barlotta, K; Furbee, RB; Holstege, CP; Mitchell, K, 2005
)
0.33
" Sixteen post-marketing surveillance studies with such preparations, based on a total of 34,804 patients, recorded an incidence of adverse events (AEs) among patients between 0% and 6%."( Safety of St. John's Wort extract compared to synthetic antidepressants.
Schulz, V, 2006
)
0.33
" The safety and tolerability of hypericum extract in comparison to citalopram and placebo was investigated on the basis of CGI, the occurrence of adverse events and the investigation of laboratory parameters and vital signs."( Comparative efficacy and safety of a once-daily dosage of hypericum extract STW3-VI and citalopram in patients with moderate depression: a double-blind, randomised, multicentre, placebo-controlled study.
Gastpar, M; Singer, A; Zeller, K, 2006
)
0.86
" Significantly more adverse events with "certain", "probable" or "possible" relation to study medication were documented in the citalopram group (hypericum: 17."( Comparative efficacy and safety of a once-daily dosage of hypericum extract STW3-VI and citalopram in patients with moderate depression: a double-blind, randomised, multicentre, placebo-controlled study.
Gastpar, M; Singer, A; Zeller, K, 2006
)
0.78
" annulatum have a substantial cytoprotective potential against the toxic effects induced by epirubicin and necessitates further detailed pharmacological evaluation of these compounds as possible chemoprotective/radioprotective agents."( Cytoprotective effects of 5 benzophenones and a xanthone from Hypericum annulatum in models of epirubicin-induced cytotoxicity: SAR-analysis and mechanistic investigations.
Girreser, U; Karaivanova, M; Kitanov, GM; Momekov, G; Nedialkov, PT; Tzanova, T; Zh Zheleva-Dimitrova, D, 2006
)
0.57
" The Food and Drug Administration's Center for Food Safety and Applied Nutrition's Adverse Event Reporting System (CAERS) represents one of the few existing surveillance mechanisms, but it has not been well characterized with respect to DBS adverse effects."( Application of FDA adverse event report data to the surveillance of dietary botanical supplements.
Gryzlak, BM; Nisly, NL; Wallace, RB; Zimmerman, MB, 2008
)
0.35
"To characterize data on DBSs associated with adverse event reports submitted to CAERS."( Application of FDA adverse event report data to the surveillance of dietary botanical supplements.
Gryzlak, BM; Nisly, NL; Wallace, RB; Zimmerman, MB, 2008
)
0.35
"We requested and obtained CAERS data from 1999 to 2003 involving adverse effects associated with the 6 most frequently used DBSs: Echinacea, ginseng, garlic, Ginkgo biloba, St."( Application of FDA adverse event report data to the surveillance of dietary botanical supplements.
Gryzlak, BM; Nisly, NL; Wallace, RB; Zimmerman, MB, 2008
)
0.35
" Gastrointestinal and neurologic problems were the most common clinical outcomes among single-ingredient DBS-associated adverse events."( Application of FDA adverse event report data to the surveillance of dietary botanical supplements.
Gryzlak, BM; Nisly, NL; Wallace, RB; Zimmerman, MB, 2008
)
0.35
"CAERS surveillance of DBS adverse effects is potentially as effective as other passive surveillance methods, but the number of reports is relatively small, validation is incomplete, and some inconsistencies within reports were found."( Application of FDA adverse event report data to the surveillance of dietary botanical supplements.
Gryzlak, BM; Nisly, NL; Wallace, RB; Zimmerman, MB, 2008
)
0.35
"9%), discontinue if adverse reaction (23."( Clinically relevant safety issues associated with St. John's wort product labels.
Clauson, KA; Rutledge, JC; Santamarina, ML, 2008
)
0.35
" Two hundred and seventeen (49%) patients reported 504 adverse events, 30 (6%) of which were possibly or probably related to the treatment."( Long-term effects of St. John's wort (Hypericum perforatum) treatment: a 1-year safety study in mild to moderate depression.
Brattström, A, 2009
)
0.62
" polyanthemum can be classified as safe (category 5) according to OECD acute toxicity parameters."( Acute and repeated-doses (28 days) toxicity study of Hypericum polyanthemum Klotzsch ex Reichardt (Guttiferare) in mice.
Betti, AH; Buffon, A; Dallegrave, E; Driemeier, D; Rates, SM; Stein, AC; Watanabe, TT; Wouters, AT, 2012
)
0.63
"The essential oils obtained from Hypericum triquetrifolium can be used as antimicrobial agents and could be safe at non cytotoxic doses."( Evaluation of the cytotoxic effect and antibacterial, antifungal, and antiviral activities of Hypericum triquetrifolium Turra essential oils from Tunisia.
Abid, N; Aouni, M; Cioni, PL; Elaissi, A; Flamini, G; Koudja, S; Rouis, Z; Yangui, T, 2013
)
0.89
" perforatum, especially by gavage similar to oral consumption used by humans, is safe and with beneficial antimutagenic potential."( Evaluation of the cytotoxicity, mutagenicity and antimutagenicity of a natural antidepressant, Hypericum perforatum L. (St. John's wort), on vegetal and animal test systems.
de Almeida, IV; Düsman, E; Mantovani, MS; Mariucci, RG; Peron, AP; Vicentini, VE, 2013
)
0.61
" Adverse events occurred in 53 (17."( Hypericum perforatum L. preparations for menopause: a meta-analysis of efficacy and safety.
Dong, JX; Huang, RQ; Jiang, YL; Liu, YR; Xiao, BK; Yang, JY, 2014
)
1.85
" This report aimed to draw attention to the possible toxic effects of this association as well as to the clinical recovery of the patient after discontinuing their use."( Hypericum perforatum-induced hepatotoxicity with possible association with copaiba (Copaifera langsdorffii Desf):case report.
Agollo, MC; Diament, J; Miszputen, SJ, 2014
)
1.85
" The Panel concluded that H perforatum-derived ingredients were safe as cosmetic ingredients in the practices of use and concentration as described in this safety assessment."( Amended safety assessment of Hypericum perforatum-derived ingredients as used in cosmetics.
Andersen, FA; Becker, LC; Belsito, DV; Bergfeld, WF; Hill, RA; Klaassen, CD; Liebler, DC; Marks, JG; Shank, RC; Slaga, TJ; Snyder, PW,
)
0.42
"Holoil® proved to be a safe and active option in the management of acute skin toxicity in head and neck cancer patients submitted to RT or chemo-radiotherapy."( Hypericum perforatum and neem oil for the management of acute skin toxicity in head and neck cancer patients undergoing radiation or chemo-radiation: a single-arm prospective observational study.
Filippi, AR; Franco, P; Grosso, M; Lombardo, A; Moretto, F; Potenza, I; Rampino, M; Ricardi, U; Segantin, M; Taricco, D; Vallario, P, 2014
)
1.85
" Hypericum perforatum and neem oil proved to be a safe and effective option in the management of acute skin toxicity in head and neck cancer patients submitted to chemo-radiation with weekly cisplatin."( Management of acute skin toxicity with Hypericum perforatum and neem oil during platinum-based concurrent chemo-radiation in head and neck cancer patients.
Airoldi, M; Arcadipane, F; Cavallin, C; Fasolis, M; Franco, P; Garzino Demo, P; Martini, S; Ostellino, O; Pecorari, G; Rampino, M; Ricardi, U; Schena, M, 2017
)
1.63
" Neuropathic pain is a common side effect of oxaliplatin-based chemotherapy and often the cause of therapy discontinuation."( Effects of Hypericum perforatum extract on oxaliplatin-induced neurotoxicity: in vitro evaluations.
Cinci, L; Di Cesare Mannelli, L; Ghelardini, C; Maidecchi, A; Mattoli, L, 2017
)
0.84
" The FDA prohibits manufacturers and distributors from marketing adulterated or misbranded products but does not rigorously define safe practices."( Herbal Supplements: Precautions and Safe Use.
Williams, CT, 2021
)
0.62
" Many studies have reported positive outcomes with low adverse effects, while others did not find it to be a suitable alternative."( The efficacy and safety of St. John's wort extract in depression therapy compared to SSRIs in adults: A meta-analysis of randomized clinical trials.
Wu, Y; Yu, C; Zhang, H; Zhao, X, 2023
)
0.91
" In addition, we describe the corrective actions taken, thus outlining the main objectives of the activity of the PCD's pharmacy counseling service: first, to identify, report, and manage adverse drug reactions (ADRs), and second, to identify therapeutic combinations that present potential risks of toxicity or ineffectiveness of the drug therapy itself."( Toxicity Derived from Interaction between Natural Compounds and Cancer Therapeutic Drugs Metabolized by CYP3A4: Lessons Learned from Two Clinical Case Reports.
Baldo, P; Orzetti, S, 2023
)
0.91

Pharmacokinetics

The validated method was successfully applied to pharmacokinetic studies of the two analytes in rat plasma after the oral administration of Hypericum japonicum thunb.

ExcerptReferenceRelevance
" The median elimination half-life times of hypericin were 24."( Pharmacokinetics of hypericin and pseudohypericin after oral intake of the hypericum perforatum extract LI 160 in healthy volunteers.
Brockmöller, J; Kerb, R; Ploch, M; Roots, I; Staffeldt, B, 1994
)
0.52
"A double-blind, randomized, placebo-controlled parallel-group trial (phase I) was performed to evaluate the central pharmacodynamic effects of two hypericum extracts with different contents of hyperforin (0."( Pharmacodynamic effects of two different hypericum extracts in healthy volunteers measured by quantitative EEG.
Dimpfel, W; Sauer, S; Schellenberg, R, 1998
)
0.77
"0001], peak concentration in plasma (Cmax; P = ."( Pharmacokinetic interaction of digoxin with an herbal extract from St John's wort (Hypericum perforatum).
Bauer, S; Brockmöller, J; Johne, A; Langheinrich, M; Maurer, A; Roots, I, 1999
)
0.53
" The potential clinical consequence of this pharmacokinetic herb-drug interaction is apparent, since low cyclosporin levels are associated with an increased risk of rejection after organ transplantation and are usually not suspected upon intake of plant products."( Hazardous pharmacokinetic interaction of Saint John's wort (Hypericum perforatum) with the immunosuppressant cyclosporin.
Brockmöller, J; Budde, K; Johne, A; Krüger, H; Mai, I; Neumayer, HH; Roots, I, 2000
)
0.55
" We compared carbamazepine and carbamazepine-10,11-epoxide noncompartmental pharmacokinetic parameter values before and after St John's Wort with a paired Student t test."( Lack of effect of St John's Wort on carbamazepine pharmacokinetics in healthy volunteers.
Alfaro, RM; Burstein, AH; Dunn, T; Horton, RL; Piscitelli, SC; Theodore, W, 2000
)
0.31
"We found no significant differences before or after the administration of St John's Wort in carbamazepine peak concentration (7."( Lack of effect of St John's Wort on carbamazepine pharmacokinetics in healthy volunteers.
Alfaro, RM; Burstein, AH; Dunn, T; Horton, RL; Piscitelli, SC; Theodore, W, 2000
)
0.31
"05) decreased the oral clearance by 20%, with no change in half-life or renal clearance."( Effect of St John's wort on the pharmacokinetics of fexofenadine.
Hall, SD; Hamman, MA; Huang, SM; Lesko, LJ; Wang, Z, 2002
)
0.31
" A pharmacokinetic interaction between St."( Effects of St. John's wort (Hypericum perforatum) on tacrolimus pharmacokinetics in healthy volunteers.
Akhtar, S; Chen, YL; Hebert, MF; Larson, AM; Park, JM, 2004
)
0.62
" The aim of the study was to evaluate the possible pharmacokinetic interaction of marketed St John's wort formulations and doses with digoxin."( Effect of St John's wort dose and preparations on the pharmacokinetics of digoxin.
Drewelow, B; Frank, B; Hehl, EM; Majcher-Peszynska, J; Mueller, SC; Petzsch, M; Riethling, AK; Sievers, H; Uehleke, B; Woehling, H, 2004
)
0.32
" Both pharmacokinetic and pharmacodynamic components may play a role in these interactions."( Pharmacokinetic interactions of drugs with St John's wort.
Chan, E; Huang, M; Lee, EJ; Pan, SQ; Zhou, S, 2004
)
0.32
" Imatinib half-life (12."( Effect of St John's wort on imatinib mesylate pharmacokinetics.
Egorin, MJ; Fitzgerald, SM; Frye, RF; Hruska, MW; Lagattuta, TF, 2004
)
0.32
"In vitro and in vivo studies have indicated that the induction or inhibition of cytochrome P450 (CYP) is one of the major mechanisms for some clinically important pharmacokinetic herb-drug interactions."( Predicting pharmacokinetic herb-drug interactions.
Chan, E; Chen, X; Huang, M; Li, SC; Li, X; Paxton, JW; Zhang, Q; Zhou, S, 2004
)
0.32
"Open-label, complete crossover, fixed-sequence, pharmacokinetic study."( The influence of St. John's wort on the pharmacokinetics and protein binding of imatinib mesylate.
Berenson, CS; Booker, BM; Bullock, JM; Haas, CE; Jusko, WJ; Smith, P, 2004
)
0.32
"005), and 21% in half-life (p=0."( The influence of St. John's wort on the pharmacokinetics and protein binding of imatinib mesylate.
Berenson, CS; Booker, BM; Bullock, JM; Haas, CE; Jusko, WJ; Smith, P, 2004
)
0.32
" The body weight loss, gastrointestinal and hematological toxicities induced by CPT-11, and the pharmacokinetic parameters of CPT-11 were evaluated in rats pretreated with SJW or vehicle."( St. John's Wort modulates the toxicities and pharmacokinetics of CPT-11 (irinotecan) in rats.
Chan, E; Chan, SY; Chen, X; Duan, W; Ho, PC; Hu, Z; Huang, M; Li, X; Xu, C; Yang, H; Yang, X; Zhou, S; Zhu, YZ, 2005
)
0.33
" Therefore, the objective of the two open phase I clinical trials was to obtain pharmacokinetic data of these constituents from a hypericum extract containing tablet: hypericin, pseudohypericin, hyperforin, the flavonoid aglycone quercetin, and its methylated form isorhamnetin."( Investigation of pharmacokinetic data of hypericin, pseudohypericin, hyperforin and the flavonoids quercetin and isorhamnetin revealed from single and multiple oral dose studies with a hypericum extract containing tablet in healthy male volunteers.
Bässler, D; Schulz, HU; Schürer, M; Weiser, D, 2005
)
0.72
" However, few pharmacokinetic studies of naphthodianthrones and hyperforin have appeared and none has yet evaluated the exposure to unchanged quercetin and its glycosides after intake of extracts."( Antidepressant-like components of Hypericum perforatum extracts: an overview of their pharmacokinetics and metabolism.
Caccia, S, 2005
)
0.61
" In contrast to the amount of documentation concerning clinical efficacy, oral bioavailability and pharmacokinetic data about the active components are rather scarce."( Hypericum perforatum: a 'modern' herbal antidepressant: pharmacokinetics of active ingredients.
Schubert-Zsilavecz, M; Wurglics, M, 2006
)
1.78
" We aimed to develop a pharmacokinetic model to predict the time profile of blood CsA concentrations during and after the intake of SJW."( Pharmacokinetic modelling of the interaction between St John's wort and ciclosporin A.
Murakami, H; Murakami, Y; Ohtani, H; Sawada, Y; Tanaka, T; Tsujimoto, M, 2006
)
0.33
"We developed a pharmacokinetic model incorporating turnover of detoxicating proteins, with the assumption that the amount of detoxicating proteins is in inverse proportion to the ratio of trough blood concentration to daily dose (C/D ratio) of CsA."( Pharmacokinetic modelling of the interaction between St John's wort and ciclosporin A.
Murakami, H; Murakami, Y; Ohtani, H; Sawada, Y; Tanaka, T; Tsujimoto, M, 2006
)
0.33
" An open-label, 2-period, nonrandomized, phase-I, pharmacokinetic interaction design was used."( Effects of Hypericum perforatum on ivabradine pharmacokinetics in healthy volunteers: an open-label, pharmacokinetic interaction clinical trial.
Calvo, A; Martínez, I; Portolés, A; Resplandy, G; Terleira, A, 2006
)
0.72
" Other pharmacokinetic and pharmacodynamic parameters were unaffected."( Investigation of the effects of herbal medicines on warfarin response in healthy subjects: a population pharmacokinetic-pharmacodynamic modeling approach.
Blair, EY; Jiang, X; McLachlan, AJ, 2006
)
0.33
" John's wort administration for 21 days had no apparent clinically important impact on the single-dose pharmacokinetic parameters of S(+)- and R(-)-ibuprofen."( Effects of St. John's wort supplementation on ibuprofen pharmacokinetics.
Bell, EC; Lloyd, KB; Ravis, WR; Stokes, TJ, 2007
)
0.34
"Twenty-eight days of SJW treatment resulted in no significant alterations in the pharmacokinetic parameters for prednisone or prednisolone."( Lack of pharmacokinetic interaction between St. John's wort and prednisone.
Bell, EC; Chan, HM; Lin, YJ; Ravis, WR, 2007
)
0.34
" The validated method was successfully applied to pharmacokinetic studies of the two analytes in rat plasma after the oral administration of Hypericum japonicum thunb."( HPLC analysis and pharmacokinetic study of quercitrin and isoquercitrin in rat plasma after administration of Hypericum japonicum thunb. extract.
Bi, KS; Chen, XH; Li, J; Liu, X; Wang, ZW; Zhang, L, 2008
)
0.76
" The aim of this study was to assess potential pharmacokinetic (PK) and pharmacodynamic (PD) interactions between St John's wort and gliclazide in healthy subjects with different cytochrome P450 2C9 (CYP2C9) genotypes."( Effects of St John's wort and CYP2C9 genotype on the pharmacokinetics and pharmacodynamics of gliclazide.
Day, RO; Liauw, WS; McLachlan, AJ; Murray, M; Williams, KM; Xu, H, 2008
)
0.35
" The area under the plasma concentration-time curve (AUC(0-infinity)), apparent clearance (CL/F) and elimination half-life (t 1/2) of gliclazide and incremental changes in glucose and insulin AUC(0-4) were compared."( Effects of St John's wort and CYP2C9 genotype on the pharmacokinetics and pharmacodynamics of gliclazide.
Day, RO; Liauw, WS; McLachlan, AJ; Murray, M; Williams, KM; Xu, H, 2008
)
0.35
" Pharmacokinetic data (AUC, C(max), t(max)) were determined the day before (reference) and after (test) a 14-day period of Ze 117 intake (250 mg twice daily)."( St John's wort extract (Ze 117) does not alter the pharmacokinetics of a low-dose oral contraceptive.
Bauer, S; Brattström, A; Kunter, U; Roots, I; Will-Shahab, L, 2009
)
0.35
" The herbal treatment significantly reduced the peak plasma concentration (C(max)), the area under the plasma concentration-time curve (AUC(0-24h)) and the elimination half-life (t(1/2)) of finasteride."( The effect of St. John's wort on the pharmacokinetics, metabolism and biliary excretion of finasteride and its metabolites in healthy men.
Bondesson, U; Hedeland, M; Knutson, L; Lennernäs, H; Lundahl, A, 2009
)
0.35
"The in vivo pharmacokinetic study and in situ single-pass intestinal perfusion model were employed in the research."( Effects of St. John's wort extract on indinavir pharmacokinetics in rats: differentiation of intestinal and hepatic impacts.
Ho, YF; Hsueh, WC; Huang, DK; Lai, MY; Tsai, TH; Yu, HY, 2009
)
0.35
"Oral administration of either 150 or 300 mg/day SJW for 15 days significantly reduced indinavir plasma levels with certain pharmacokinetic parameter changes."( Effects of St. John's wort extract on indinavir pharmacokinetics in rats: differentiation of intestinal and hepatic impacts.
Ho, YF; Hsueh, WC; Huang, DK; Lai, MY; Tsai, TH; Yu, HY, 2009
)
0.35
"Herb-drug pharmacokinetic interactions between SJW and indinavir can be clearly observed in the Wistar rat model."( Effects of St. John's wort extract on indinavir pharmacokinetics in rats: differentiation of intestinal and hepatic impacts.
Ho, YF; Hsueh, WC; Huang, DK; Lai, MY; Tsai, TH; Yu, HY, 2009
)
0.35
" These results show that the cynomolgus monkey can be a predictive in vivo animal model of PXR-mediated induction of human CYP3A4 and can provide a useful assessment of the resulting pharmacokinetic changes of affected drugs."( Evaluation of cynomolgus monkey pregnane X receptor, primary hepatocyte, and in vivo pharmacokinetic changes in predicting human CYP3A4 induction.
Anthony, MN; Dinchuk, JE; Dulac, HA; Grace, JE; Kim, S; Mosure, KW; Orcutt, T; Pizzano, J; Sauer, MB; Simmermacher, J; Sinz, M; Vuppugalla, R; Zoeckler, ME, 2010
)
0.36
" No change in the time to peak concentration (t(max)) and the blood elimination half-life (t(1/2)) of bupropion was observed between the control and St."( Effect of St. John's wort supplementation on the pharmacokinetics of bupropion in healthy male Chinese volunteers.
Chen, Y; Dai, LL; Fan, L; Lei, HP; Li, HH; Xie, HT; Yu, XY; Zhou, HH, 2010
)
0.36
" John's wort (SJW), a CYP2C19 and CYP3A4 inducer, enhances the pharmacodynamic response of clopidogrel."( The effect of St John's Wort on the pharmacodynamic response of clopidogrel in hyporesponsive volunteers and patients: increased platelet inhibition by enhancement of CYP3A4 metabolic activity.
Gurbel, PA; Lau, WC; Rubenfire, M; Shields, T; Tantry, US; Welch, TD, 2011
)
0.37
"In all subjects, SJW had no effect on the total area under the plasma concentration-time curve from time zero to infinity (AUC(∞)), the peak plasma concentration (C(max)) or the elimination half-life (t(½)) of repaglinide."( The pregnane X receptor agonist St John's Wort has no effects on the pharmacokinetics and pharmacodynamics of repaglinide.
Chen, WQ; Fan, L; Guo, D; Liu, YL; Liu, ZQ; Sheng, D; Tan, ZR; Zhang, W; Zhou, G; Zhou, HH, 2011
)
0.37
"3-fold increases of the area under the concentration curve from 0 to 6 hours (AUC(0-6)) compared to those of the SJW extract (417 ± 41 nM·h in plasma and 41."( In vitro and in vivo characterization of new formulations of St. John's Wort extract with improved pharmacokinetics and anti-nociceptive effect.
Hatanaka, J; Kou, K; Kuriyama, K; Onoue, S; Shinme, Y; Uchida, A; Uchida, S; Yamada, S, 2011
)
0.37
" Thus, repeated administrations of SJW affect the pharmacokinetic profiles of CsA in dogs."( Time-course effects of St John's wort on the pharmacokinetics of cyclosporine in dogs: interactions between herbal extracts and drugs.
Fukunaga, K; Orito, K, 2012
)
0.38
" John's Wort (SJW), on its pharmacokinetic parameters and blood pressure was investigated in rats."( Pharmacokinetics and cardiovascular effect of etoricoxib in the absence or presence of St. John's Wort in rats.
Aboul-Enein, HY; Baky, NA; Radwan, MA; Zaghloul, I, 2012
)
0.38
" The pharmacokinetic parameters of ZTO: t1/2alpha, t1/2beta, Vd, CL, AUC and Ka were (1."( [Study on effect of Hypericum perforatum on pharmacokinetics of zedoary turmeric oil in compound antiviral preparation].
Bei, Y; Huang, YD; Li, JA; Li, YY; Xiang, Q; Xiao, QX; Zhang, H; Zhang, MJ; Zhao, W, 2013
)
0.71
" Here, the potential pharmacokinetic interaction between SJW and the sensitive CYP3A4 substrate docetaxel was investigated."( The effect of St John's wort on the pharmacokinetics of docetaxel.
Beijnen, JH; Burgers, JA; Goey, AK; Keessen, M; Marchetti, S; Meijerman, I; Mergui-Roelvink, M; Rosing, H; Schellens, JH, 2014
)
0.4
" The maximum plasma concentration and elimination half-life of docetaxel were (non-significantly) decreased after SJW supplementation."( The effect of St John's wort on the pharmacokinetics of docetaxel.
Beijnen, JH; Burgers, JA; Goey, AK; Keessen, M; Marchetti, S; Meijerman, I; Mergui-Roelvink, M; Rosing, H; Schellens, JH, 2014
)
0.4
"This Phase I, open-label, three-period, cross-over pharmacokinetic study enrolled healthy males and females who, following consent and screening procedures, were randomized to receive SJW on days 1-14, SJW plus boceprevir (SJW on days 22-35 and together on days 31-35) and boceprevir on days 52-56, separated by 7 day washout periods, or the same treatment in the opposite order."( Pharmacokinetics of the co-administration of boceprevir and St John's wort to male and female healthy volunteers.
Back, D; Boffito, M; Bonora, S; D'Avolio, A; Di Perri, G; Else, L; Jackson, A; Moyle, G; Simiele, M; Singh, GJ, 2014
)
0.4
" The objective of this study was to develop and evaluate a physiologically based pharmacokinetic (PBPK) model for hyperforin (the constituent of SJW responsible for interactions), which has the potential to provide unique insights into SJW interactions and allow prediction of the likely extent of interactions with SJW compared to published interaction reports."( Physiologically Based Pharmacokinetic Modelling of Hyperforin to Predict Drug Interactions with St John's Wort.
Adiwidjaja, J; Boddy, AV; McLachlan, AJ, 2019
)
0.51

Compound-Compound Interactions

The study evaluated the wound healing activity of microcurrent application alone or in combination with topical Hypericum perforatum L. Our data suggest that anti-depressive therapeutic effects of Hypericum are possible with lower doses, when it is combined with Passiflora.

ExcerptReferenceRelevance
"St John's Wort (SJW) is widely used in the treatment of depression but concerns have been raised about its potential to interact with other drugs."( St Johns wort increases expression of P-glycoprotein: implications for drug interactions.
Back, D; Barry, M; Feely, J; Hennessy, M; Kavanagh, P; Kelleher, D; Mulcahy, F; Spiers, JP, 2002
)
0.31
"The aim of this work is to identify the medicines which interact with the herbal remedy St John's wort (SJW), and the mechanisms responsible."( St John's wort (Hypericum perforatum): drug interactions and clinical outcomes.
Arlett, P; Bergquist, C; Gerden, B; Henderson, L; Yue, QY, 2002
)
0.66
" Survey data clearly indicate that these agents are frequently combined with prescription and over-the-counter medications."( The emerging recognition of herb-drug interactions with a focus on St. John's wort (Hypericum perforatum).
DeVane, CL; Markowitz, JS, 2001
)
0.54
" When combined with serotonin reuptake inhibitor, antidepressants (e."( Drug interactions with St. John's Wort (Hypericum perforatum): a review of the clinical evidence.
Izzo, AA, 2004
)
0.59
" Thus, an attempt was made to predict pharmacokinetic herb-drug interactions using the pharmacokinetic principles that are used for predicting drug-drug interactions."( Predicting pharmacokinetic herb-drug interactions.
Chan, E; Chen, X; Huang, M; Li, SC; Li, X; Paxton, JW; Zhang, Q; Zhou, S, 2004
)
0.32
" The present study evaluated the effect of chronic (once a day for 12 days) intragastric administration of a CO2 Hypericum perforatum extract (HPCO2), given alone or combined with naltrexone (NTX), on ethanol intake offered 2h/day in msP rats."( Reduction of ethanol intake by chronic treatment with Hypericum perforatum, alone or combined with naltrexone in rats.
Cucculelli, M; Massi, M; Mattioli, L; Perfumi, M, 2005
)
0.79
" Constituents in herbs interact with nuclear receptors to enhance metabolizing enzyme and/or transporter activity leading to reduced drug concentrations."( Herbal product-drug interactions mediated by induction.
Bailey, DG; Tirona, RG, 2006
)
0.33
"We searched MEDLINE (1966 to November 2003) and EMBASE (1980 to 2003), using the heading drug interactions combined with individual antidepressant names."( Systematic overview of drug interactions with antidepressant medications.
Holbrook, A; Labiris, NR; Nieuwstraten, C, 2006
)
0.33
"Cytochrome P450 2D6 (CYP2D6), an important CYP isoform with regard to drug-drug interactions, accounts for the metabolism of approximately 30% of all medications."( Clinical assessment of CYP2D6-mediated herb-drug interactions in humans: effects of milk thistle, black cohosh, goldenseal, kava kava, St. John's wort, and Echinacea.
Barone, G; Battu, SK; Carrier, DJ; Cheboyina, S; Gurley, BJ; Hartsfield, F; Hubbard, MA; Swain, A; Tong, Y; Williams, DK, 2008
)
0.35
" These include systematic research to identify SJW-drug interaction; close therapeutic drug monitoring when SJW is combined with conventional drugs with a narrow therapeutic window; proper dose and regimen adjustment; patient education and communication between the patient and physician; design of new preparations of SJW without inducing ability of CYP3A4 and P-gp while retaining its bioactivity; and appropriate regulation in herbal safety and efficacy."( An update on clinical drug interactions with the herbal antidepressant St. John's wort.
Lai, X; Zhou, SF, 2008
)
0.35
" Well-documented SJW interactions include (1) reduced blood cyclosporin concentration, as suggested by multiple case reports as well as by clinical trials, (2) serotonin syndrome or lethargy when SJW was given with serotonin reuptake inhibitors, (3) unwanted pregnancies in women while using oral contraceptives and SJW, and (4) reduced plasma drug concentration of antiretroviral (e."( Herb-drug interactions with St John's wort (Hypericum perforatum): an update on clinical observations.
Borrelli, F; Izzo, AA, 2009
)
0.61
" Pharmacokinetic data for zolpidem alone and in combination with SJW were analysed by high-performance liquid chromatography."( Drug interaction between St John's wort and zolpidem in healthy subjects.
Echizenya, M; Hojo, Y; Ohkubo, T; Shimizu, T, 2011
)
0.37
" For many other combinations evidence is sparse but due to a number of case reports of adverse interactions they should only cautiously be combined with certain critical dose drugs until their risk is fully assessed."( [Herbal drug-drug interaction and adverse drug reactions].
Hafner-Blumenstiel, V, 2011
)
0.37
" Our data suggest that anti-depressive therapeutic effects of Hypericum are possible with lower doses, when it is combined with Passiflora, than with mono-preparations of Hypericum."( Pharmacological studies in an herbal drug combination of St. John's Wort (Hypericum perforatum) and passion flower (Passiflora incarnata): in vitro and in vivo evidence of synergy between Hypericum and Passiflora in antidepressant pharmacological models.
Appel, K; Fiebich, BL; Kammler, T; Knörle, R; Weiss, G, 2011
)
0.84
" Women with breast cancer who receive paroxetine in combination with tamoxifen are at increased risk for death."( Metabolic drug interactions between antidepressants and anticancer drugs: focus on selective serotonin reuptake inhibitors and hypericum extract.
Caraci, F; Crupi, R; Drago, F; Spina, E, 2011
)
0.58
" In clinical studies using midazolam or anticancer drugs (irinotecan and imatinib) as known CYP3A4 substrates in combination with SJW, decreased plasma levels of these drugs were observed, which was expected as a consequence of CYP3A4 induction."( Relevance of in vitro and clinical data for predicting CYP3A4-mediated herb-drug interactions in cancer patients.
Beijnen, JH; Goey, AK; Meijerman, I; Mooiman, KD; Schellens, JH, 2013
)
0.39
", transporters, Phase II metabolism enzymes) are still poorly investigated and are difficult to evaluate because mixtures are administered with variable and often unspecified amounts of ingredients."( Drug interactions with phytotherapeutics in oncology.
Carls, A; Haefeli, WE, 2014
)
0.4

Bioavailability

The objective of these two open phase I clinical trials was the investigation of the bioavailability of five constituents from a hypericum extract containing tablet. Several pharmacokinetic studies performed in rats and humans demonstrated oral bio availability of hyperforin from Hypericum extract.

ExcerptReferenceRelevance
" Chronic use of Saint John's wort (SJW) has been shown to lower the bioavailability for a variety of co-administered drugs including indinavir, cyclosporin, and digoxin."( Saint John's wort: an in vitro analysis of P-glycoprotein induction due to extended exposure.
Greenblatt, DJ; Perloff, MD; Shader, RI; Störmer, E; von Moltke, LL, 2001
)
0.31
" This metabolic inhibition is manifested by an increase in the serum levels, oral bioavailability and therapeutic activity of drugs metabolized by CYP 3A4, a characteristic that may indeed be interesting for some of them, but which should be avoided for others."( [Metabolic effects and drug interactions provoked by certain vegetables: grapefruit, St. John's wort and garlic].
Neuman, M, 2002
)
0.31
" This enzyme induction most likely contributes to the decreased bioavailability observed upon co-administration of various drugs with Saint John's wort extract."( Differential effects of Saint John's Wort (hypericum perforatum) on the urinary excretion of D-glucaric acid and 6beta-hydroxycortisol in healthy volunteers.
Bauer, S; Brockmöller, J; Johne, A; Kerb, R; Roots, I; Störmer, E, 2002
)
0.58
" Only the naloxone-insensitive component of MET activity showed good bioavailability following oral administration."( Antinociceptive activity of Hypericum caprifoliatum and Hypericum polyanthemum (Guttiferae).
Fenner, R; Heckler, AP; Rates, SM; Viana, AF, 2003
)
0.61
"Repeated administration of St John's wort significantly decreased the bioavailability of R- and S-verapamil."( St John's wort decreases the bioavailability of R- and S-verapamil through induction of the first-pass metabolism.
Bondesson, U; Engman, H; Hedeland, M; Knutson, L; Lennernäs, H; Tannergren, C, 2004
)
0.32
" Of 19 trials with available plasma data, three found no important interaction (change in area under the curve < 20%) and 17 found a decrease in systemic bioavailability of the conventional drug; in seven studies the 95% confidence interval excluded a decrease of < 20%."( Interaction of St John's wort with conventional drugs: systematic review of clinical trials.
Clarke, M; Gallicano, K; Guyatt, G; Mills, E; Montori, VM; Wu, P, 2004
)
0.32
"Clinicians and patients should beware of possible decreases in the systemic bioavailability of conventional drugs when taken concomitantly with St John's wort."( Interaction of St John's wort with conventional drugs: systematic review of clinical trials.
Clarke, M; Gallicano, K; Guyatt, G; Mills, E; Montori, VM; Wu, P, 2004
)
0.32
"Hyperforin (HYF) has been discussed as a potential cause of the reduction in the bioavailability of numerous drugs seen with St John's wort (SJW) comedication."( Hyperforin content determines the magnitude of the St John's wort-cyclosporine drug interaction.
Bauer, S; Budde, K; Frank, B; Johne, A; Mai, I; Perloff, ES; Roots, I; Uehleke, B, 2004
)
0.32
" Several pharmacokinetic studies performed in rats and humans demonstrated oral bioavailability of hyperforin from Hypericum extract."( Role of hyperforin in the pharmacological activities of St. John's Wort.
Zanoli, P, 2004
)
0.53
" It can also reduce the bioavailability of digoxin."( St John's wort and depression: slight efficacy at best, many drug interactions.
, 2004
)
0.32
"The objective of these two open phase I clinical trials was the investigation of the bioavailability of five constituents from a hypericum extract containing tablet, which are discussed as the components contributing to the antidepressant action."( Investigation of the bioavailability of hypericin, pseudohypericin, hyperforin and the flavonoids quercetin and isorhamnetin following single and multiple oral dosing of a hypericum extract containing tablet.
Bässler, D; Schulz, HU; Schürer, M; Weiser, D, 2005
)
0.73
"To evaluate the effect of a hiperico extract (Hypericum perforatum) on the labeling of blood elements with technetium-99m (99mTc) and in the bioavailability of the radiopharmaceutical sodium pertechnetate in Wistar rats."( [Effect of Hypericum perforatum extract on in vitro labelling of blood elements with technetium-99m and on biodisponibility of sodium pertechnetate in Wistar rats].
Bernardo-Filho, M; Santos-Filho, SD, 2005
)
0.98
" Bioavailability appears low, giving variable steady-state plasma concentrations, whose prediction may be complicated by non-linearity for hypericin and hyperforin."( Antidepressant-like components of Hypericum perforatum extracts: an overview of their pharmacokinetics and metabolism.
Caccia, S, 2005
)
0.61
" John's wort, SJW) flavonoids has been reported, but no data concerning their bioavailability in the CNS is on-hand."( Determination of St. John's wort flavonoid-metabolites in rat brain through high performance liquid chromatography coupled with fluorescence detection.
Paulke, A; Schubert-Zsilavecz, M; Wurglics, M, 2006
)
0.33
" In contrast to the amount of documentation concerning clinical efficacy, oral bioavailability and pharmacokinetic data about the active components are rather scarce."( Hypericum perforatum: a 'modern' herbal antidepressant: pharmacokinetics of active ingredients.
Schubert-Zsilavecz, M; Wurglics, M, 2006
)
1.78
" SJW reduced the oral talinolol bioavailability by 25% (P=0."( Induction of intestinal P-glycoprotein by St John's wort reduces the oral bioavailability of talinolol.
Dresser, GK; Glaeser, H; Hanso, H; Hitzl, M; Kim, RB; Kirch, W; Kuhlisch, E; Miehlke, S; Oertel, R; Schwarz, UI, 2007
)
0.34
" In a separate experiment when mice were fed purified hypericin, the active component of St John's wort, a significant increase in bioavailability (53%) of procainamide was observed compared with the control group."( Drug-herb interaction: effect of St John's wort on bioavailability and metabolism of procainamide in mice.
Actor, JK; Dasgupta, A; Hovanetz, M; Olsen, M; Wells, A, 2007
)
0.34
"St John's wort has an acute effect to increase bioavailability of procainamide but has no effect on its metabolism."( Drug-herb interaction: effect of St John's wort on bioavailability and metabolism of procainamide in mice.
Actor, JK; Dasgupta, A; Hovanetz, M; Olsen, M; Wells, A, 2007
)
0.34
" Inhibitors of ABCB1 can increase the bioavailability of such drugs due to an increased absorption."( [Pharmacokinetic problems in clinical practice: role of drug transporters].
Kroemer, HK; Rosskopf, D; Siegmund, W, 2009
)
0.35
" Further perfusion study demonstrated that both small intestine and the liver contributed significantly to the reduction of indinavir bioavailability and was flow rate-dependent."( Effects of St. John's wort extract on indinavir pharmacokinetics in rats: differentiation of intestinal and hepatic impacts.
Ho, YF; Hsueh, WC; Huang, DK; Lai, MY; Tsai, TH; Yu, HY, 2009
)
0.35
" Co-effectors in the extract improve the bioavailability of active constituents such as hypericin (1) (pharmacokinetic synergy)."( Lessons learned from herbal medicinal products: the example of St. John's Wort (perpendicular).
Butterweck, V; Nahrstedt, A, 2010
)
0.36
" John's wort extracts containing hyperforin increase the expression of CYP-enzymes and P-glycoprotein mainly in the gut and liver which leads to a clinically relevant decrease of the bioavailability of CYP and P-glycoprotein substrates."( [Pharmacokinetic drug interactions by herbal drugs: Critical evaluation and clinical relevance].
Unger, M, 2010
)
0.36
" From these findings, the NE approach might be efficacious in improving the oral bioavailability and anti-nociceptive effect of SJW extract."( In vitro and in vivo characterization of new formulations of St. John's Wort extract with improved pharmacokinetics and anti-nociceptive effect.
Hatanaka, J; Kou, K; Kuriyama, K; Onoue, S; Shinme, Y; Uchida, A; Uchida, S; Yamada, S, 2011
)
0.37
" It is also recommended that because of the reduction in the bioavailability of oral contraceptives administered concurrently with HP, women who use HP preparations should use additional preventive methods to avoid unintended pregnancy."( An update on the ability of St. John's wort to affect the metabolism of other drugs.
Abdollahi, M; Rahimi, R, 2012
)
0.38
" Most likely, factors as poor pharmaceutical availability, solubility and bioavailability contribute to the lack of significant clinical interactions."( Relevance of in vitro and clinical data for predicting CYP3A4-mediated herb-drug interactions in cancer patients.
Beijnen, JH; Goey, AK; Meijerman, I; Mooiman, KD; Schellens, JH, 2013
)
0.39
" Interactions of constituents, tested in bioavailability models, may explain why synergistic mechanisms have been found to be important for antidepressant and antiproliferative bioactivities."( Evidence for contributions of interactions of constituents to the anti-inflammatory activity of Hypericum perforatum.
Birt, DF; Hammer, KD, 2014
)
0.62
" Unfortunately, their low bioavailability (0."( Straightforward Preparation of Naphtodianthrone-Rich Ethanolic Extracts from Wild St. John's Wort.
Apostol, S; Elena Ţebrencu, C; Florea, AM; Ionescu, E; Iordache, TV; Mihaela Creţu, R; Radu, AL; Sârbu, A; Teodor, S; Zaharia, A, 2020
)
0.56
" John's wort (SJW), a herbal medicine with anti-depressant effects, interacting with other drugs, altering their bioavailability and efficacy, were published about 20 years ago."( Clinical relevance of St. John's wort drug interactions revisited.
Butterweck, V; Drewe, J; Meyer Zu Schwabedissen, HE; Nicolussi, S, 2020
)
0.56
" TAC bioavailability was decreased when co-administered with St John's wort (SJW), cranberry, rooibos tea, and boldo in human models by induction of the CYP450 system and/or P-gp efflux pump, meanwhile, the TAC bioavailability was increased when co-administered with grapefruit juice (GFJ), schisandra, berberine, turmeric, pomegranate juice, pomelo, and ginger in human and or animal models by inhibition effect on CYP450 system and/or P-gp efflux pump."( Tacrolimus and herbs interactions: a review.
Abushammala, I, 2021
)
0.62

Dosage Studied

The study provided evidence that Hypericum extract STW 3-VI in a once-daily dosing regimen may be an effective and well-tolerated option for patients with moderate depressive disorders.

ExcerptRelevanceReference
" The therapy lasted for 4 weeks; the dosage was 300 mg three times daily."( Hypericum treatment of mild depressions with somatic symptoms.
Hübner, WD; Lande, S; Podzuweit, H, 1994
)
1.73
" The dosage was 3 x 300 mg hypericum extract LI 160 or 3 x 25 mg imipramine daily."( Effectiveness and tolerance of the hypericum extract LI 160 in comparison with imipramine: randomized double-blind study with 135 outpatients.
Arnoldt, KH; Hübner, WD; Vorbach, EU, 1994
)
0.86
" During long-term dosing (3 x 300 mg/day), a steady-state was reached after 4 days."( Pharmacokinetics of hypericin and pseudohypericin after oral intake of the hypericum perforatum extract LI 160 in healthy volunteers.
Brockmöller, J; Kerb, R; Ploch, M; Roots, I; Staffeldt, B, 1994
)
0.52
" The dosage was typically 300 to 900 mg total extract daily; the therapy duration was 2 to 6 weeks."( Clinical investigation of the antidepressant effectiveness of hypericum.
Harrer, G; Schulz, V, 1994
)
0.53
" Many supplements are potent drugs that lack sufficient data on safety, dose-response relationships, drug interactions, and purity."( Over-the-counter psychotropics: a review of melatonin, St John's wort, valerian, and kava-kava.
Guenther, G; Heiligenstein, E, 1998
)
0.3
" The dosage schedule was elaborated for the application of identical amounts of hyperforin in both extracts in each dosing group."( Effects of a methanolic extract and a hyperforin-enriched CO2 extract of St. John's Wort (Hypericum perforatum) on intracerebral field potentials in the freely moving rat (Tele-Stereo-EEG).
Dimpfel, W; Mannel, M; Schober, F, 1998
)
0.52
" These studies have shown that the effective dosage is within a range of 600 to 900 mg extract."( [High dose St. John's wort extract as a phytogenic antidepressant].
Kasper, S; Schulz, V, 1999
)
0.3
"0001), and plasma drug concentration at the end of a dosing interval (P = ."( Pharmacokinetic interaction of digoxin with an herbal extract from St John's wort (Hypericum perforatum).
Bauer, S; Brockmöller, J; Johne, A; Langheinrich, M; Maurer, A; Roots, I, 1999
)
0.53
" In the case of the hypericum extracts the dose-response relationship was inverted U-shaped with a MED value of 20 mg/kg and a maximal effect of 41% and 32% immobility reduction, for Ze 117 and LI 160, respectively."( Comparison of hypericum extracts with imipramine and fluoxetine in animal models of depression and alcoholism.
de Beun, R; De Vry, J; Jentzsch, KR; Maurel, S; Schreiber, R, 1999
)
0.99
" Our own work supports the contention that LI 160, the best-documented St John's wort medication, is effective at a high dosage even in patients with severe depression."( St John's wort: a potential therapy for elderly depressed patients?
Arnoldt, KH; Vorbach, EU; Wolpert, E, 2000
)
0.31
" Mean dosage was 475."( Consumer use of St. John's wort: a survey on effectiveness, safety, and tolerability.
Beckman, SE; Sommi, RW; Switzer, J, 2000
)
0.31
"The sheep were dosed with a plant slurry by stomach tube and then exposed to bright sunlight for up to 5 h per day over successive days."( Sunlight associated hyperthermia as a consistent and rapidly developing clinical sign in sheep intoxicated by St John's wort (Hypericum perforatum).
Bourke, CA, 2000
)
0.51
" Hypericum extract in a dosage of 900 mg/day is effective in mild to moderately severe depressed outpatients."( [Saint John's Wort as an antidepressant].
Schulte, PF, 2000
)
1.22
" The cyclosporin A dosage later had to be doubled, which caused some side effects."( Interaction of Hypericum perforatum (St. John's wort) with cyclosporin A metabolism in a patient after liver transplantation.
Broelsch, CE; Frilling, A; Gerken, G; Karliova, M; Malagò, M; Treichel, U, 2000
)
0.66
" The choice and dosage of an antidepressant is dictated by the severity and the symptomatology of the disorder as well as the expected adverse effects."( [Treatment of depression with St. Johns wort in general practice].
Vanoni, C, 2000
)
0.31
" These studies have shown that the effective dosage is within a range of 600-900 mg extract."( [St. Johns wort extract as plant antidepressant].
Kasper, S; Schulz, V, 2000
)
0.31
" The dosage dose not differ from that for severe depressive episodes."( [Treatment of dysthymia].
Pöldinger, W, 2000
)
0.31
" This warning follows a study by the National Institutes of Health (NIH) on dosing and blood levels of indinavir in HIV-negative test subjects."( St. John's wort warning: do not combine with protease inhibitors, NNRTIs.
James, JS, 2000
)
0.31
" the dosage used ranged from 300 to 1800 mg per day."( Experience with St John's Wort (Hypericum perforatum) in children under 12 years with symptoms of depression and psychovegetative disturbances.
Hübner, WD; Kirste, T, 2001
)
0.59
" For five batches from each of the eight manufacturers, 10 individual dosage forms (tablets or capsules) were analyzed for both hyperforin and hypericin content."( Comparison of German St. John's wort products according to hyperforin and total hypericin content.
Baumeister, A; Dressman, J; Kaunzinger, A; Schubert-Zsilavecz, M; Westerhoff, K; Wilke, A; Wurglics, M,
)
0.13
"At present, dosage in phytotherapy often falls victim to an undifferentiated point of view."( Comparing phytopharmaceuticals: the example of St. John's Wort.
Meier, B,
)
0.13
" The dose-response curve followed an inverse U-shape."( Acute and chronic actions of a dry methanolic extract of Hypericum perforatum and a hyperforin-rich extract on dopaminergic and serotonergic neurones in rat nucleus accumbens.
Mannel, M; Rommelspacher, H; Siemanowitz, B, 2001
)
0.56
" Also, individual products have different hypericin and hyperforin levels, and are therefore not switchable--even when products are manufactured under similar extraction and processing conditions, have the same raw material:extract ratios (on a dry basis) and contain the same amount of extract per unit dosage form."( Batch-to-batch reproducibility of St. John's wort preparations.
Baumeister, A; Dressman, J; Kaunzinger, A; Schubert-Zsilovecz, M; Westerhoff, K; Wilke, A; Wurglics, M, 2001
)
0.31
" The observations made using different doses indicate that these learning-facilitating and/or memory-consolidating effects by the agents follow inverse U-shaped dose-response curves in dose ranges lower than (for hyperforin) or equal to (for Hypericum extract) their effective dose in the behavioral despair test for antidepressants."( Hypericum extract and hyperforin: memory-enhancing properties in rodents.
Chatterjee, SS; Germane, S; Klusa, V; Nöldner, M, 2001
)
1.94
"Apart from an increased risk of graft rejection, the interaction also had cost implications because the dosage of this expensive drug had to be increased."( [St. John's wort: interaction with cyclosporine increases risk of rejection for the kidney transplant and raises daily cost of medication].
Beer, AM; Ostermann, T, 2001
)
0.31
" Tolbutamide (CYP2C9), caffeine (CYP1A2), dextromethorphan (CYP2D6), oral midazolam (intestinal wall and hepatic CYP3A), and intravenous midazolam (hepatic CYP3A) were administered before, with short-term St John's wort dosing (900 mg), and after 2 weeks of intake (300 mg 3 times a day) to determine CYP activities."( The effects of St John's wort (Hypericum perforatum) on human cytochrome P450 activity.
Gorski, JC; Hall, SD; Hamman, MA; Huang, SM; Lesko, LJ; Wang, Z, 2001
)
0.6
" John's wort at a high dosage (Valdispert 'balans', a combination of valerian extract and hypericin)."( [Mania during the use of a combination preparation with St. John's wort (Hypericum perforatum)].
Assies, J; Becker, HE; Güzelcan, Y; Scholte, WF, 2001
)
0.54
" John's wort was observed in a dosage of 300 mg per tablet (standard dosage 3 x 300 mg/d)."( [St. John's wort extract WS 5572 in minor to moderately severe depression. Effectiveness and tolerance of 600 and 1200 mg active ingredient daily].
Kasper, S; Rychlik, R; Siedentop, H; von den Driesch, V, 2001
)
0.31
" As part of a larger study aimed at addressing that challenge, the goals of the present study are to (1) determine and compare the phytochemical profiles of 3 commercial SJW extracts; (2) assess the possible impact of humidity, temperature, and light on their stability; and (3) evaluate several physical properties important to the development of solid dosage forms for these extracts."( Selected physical and chemical properties of commercial Hypericum perforatum extracts relevant for formulated product quality and performance.
Augsburger, LL; Kopleman, SH; Muller, FX; NguyenPho, A; Zito, WS, 2001
)
0.56
"To compare the effects of multiple dosing with St John's wort (Hypericum perforatum) extract and amitriptyline on heart rate variability, cognitive function and quantitative EEG (qEEG) with placebo in healthy humans."( The effects of St John's wort extract on heart rate variability, cognitive function and quantitative EEG: a comparison with amitriptyline and placebo in healthy men.
Joraschky, P; Kirch, W; Krause, S; Mück-Weymann, M; Siepmann, M, 2002
)
0.55
" In the FST all three extracts decreased immobility time in a dosage of 500 mg/kg after acute as well as after repeated treatment."( Step by step removal of hyperforin and hypericin: activity profile of different Hypericum preparations in behavioral models.
Butterweck, V; Christoffel, V; Nahrstedt, A; Petereit, F; Spengler, B; Winterhoff, H, 2003
)
0.55
" Five SJW preparations were chosen to determine the amount of biapigenin in the dosage form and to investigate their release characteristics."( Development of a high-performance-liquid-chromatographic method for the determination of biapigenin in biorelevant media.
Schubert-Zsilavecz, M; Schulte-Löbbert, S; Westerhoff, K; Wilke, A; Wurglics, M, 2003
)
0.32
" After 14 days of St John's wort administration, participants were given the probe drugs along with 1 St John's wort tablet to establish postadministration CYP activity; the St John's wort dosing regimen was continued for 48 hours."( Effect of St John's wort on drug metabolism by induction of cytochrome P450 3A4 enzyme.
Chavin, KD; DeVane, CL; Donovan, JL; Markowitz, JS; Ruan, Y; Taylor, RM; Wang, JS, 2003
)
0.32
" This suggests that long-term administration of St John's wort may result in diminished clinical effectiveness or increased dosage requirements for all CYP 3A4 substrates, which represent at least 50% of all marketed medications."( Effect of St John's wort on drug metabolism by induction of cytochrome P450 3A4 enzyme.
Chavin, KD; DeVane, CL; Donovan, JL; Markowitz, JS; Ruan, Y; Taylor, RM; Wang, JS, 2003
)
0.32
" John's wort dosing phase (300 mg orally three times daily)."( Effects of St. John's wort (Hypericum perforatum) on tacrolimus pharmacokinetics in healthy volunteers.
Akhtar, S; Chen, YL; Hebert, MF; Larson, AM; Park, JM, 2004
)
0.62
"The effect of the gene dosage on the expression of rRNAs was studied in Hypericum perforatum."( RDNA methylation in Hypericum perforatum diploids and tetraploids.
Beerhues, L; Halusková, J; Liu, B,
)
0.69
" Dosing with St John's wort or ginseng was continued for 7 days after administration of the warfarin dose."( Effect of St John's wort and ginseng on the pharmacokinetics and pharmacodynamics of warfarin in healthy subjects.
Ammit, AJ; Day, RO; Duke, CC; Jiang, X; Liauw, WS; McLachlan, AJ; Roufogalis, BD; Williams, KM, 2004
)
0.32
"3), a reduction in digoxin maximal plasma concentration (C(max)) of -37% (95% CI, -42 to -32), and a reduction in digoxin plasma concentration at 24 hours after previous dosing (C(trough)) of -19% (95% CI, -27 to -11)."( Effect of St John's wort dose and preparations on the pharmacokinetics of digoxin.
Drewelow, B; Frank, B; Hehl, EM; Majcher-Peszynska, J; Mueller, SC; Petzsch, M; Riethling, AK; Sievers, H; Uehleke, B; Woehling, H, 2004
)
0.32
" The results of our study confirm the assumption that the potency of St John's wort products in inhibiting the uptake of serotonin depends on the amount of hyperforin in their dosage forms."( Comparison of the synaptosomal uptake inhibition of serotonin by St John's wort products.
Holoubek, G; Müller, WE; Schubert-Zsilavecz, M; Schulte-Löbbert, S; Wurglics, M, 2004
)
0.32
" Drugs with a narrow therapeutic index should be monitored more closely when St John's wort is added, discontinued or the dosage is changed."( Drug interactions with St John's wort : mechanisms and clinical implications.
Mannel, M, 2004
)
0.32
"The study showed a significant difference between the effects of the 2 SJW preparations on CSA pharmacokinetics (area under the plasma concentration-time curve within one dosing interval [AUC 0-12 ], P < ."( Hyperforin content determines the magnitude of the St John's wort-cyclosporine drug interaction.
Bauer, S; Budde, K; Frank, B; Johne, A; Mai, I; Perloff, ES; Roots, I; Uehleke, B, 2004
)
0.32
" The study provided evidence that Hypericum extract STW 3-VI in a once-daily dosing regimen may be an effective and well-tolerated option for patients with moderate depressive disorders."( Efficacy and tolerability of Hypericum extract STW 3-VI in patients with moderate depression: a double-blind, randomized, placebo-controlled clinical trial.
Busch, R; Graubaum, HJ; Gruenwald, J; Uebelhack, R,
)
0.7
" Concentration/time curves were determined for hypericin, pseudohypericin, hyperforin, the flavonoid aglycone quercetin, and its methylated form isorhamnetin for 48 h after single dosing and for 24 h on day 14 at the end of 2 weeks of continuous daily dosing."( Investigation of the bioavailability of hypericin, pseudohypericin, hyperforin and the flavonoids quercetin and isorhamnetin following single and multiple oral dosing of a hypericum extract containing tablet.
Bässler, D; Schulz, HU; Schürer, M; Weiser, D, 2005
)
0.52
" perforatum, 5-THP, at the dosage without any side-effects, caused the tremble in the mice."( [Experimental study of the total flavonoid in Hypericum perforatum on depression].
Liu, JX; Tu, PF; Wang, JN; Wei, CE; Xu, L; Zhao, MB, 2005
)
0.59
" Concentration/time curves were determined for the five constituents, for 48 h after single dosing and for 24 h on day 14 at the end of 2 weeks of continuous daily dosing."( Investigation of pharmacokinetic data of hypericin, pseudohypericin, hyperforin and the flavonoids quercetin and isorhamnetin revealed from single and multiple oral dose studies with a hypericum extract containing tablet in healthy male volunteers.
Bässler, D; Schulz, HU; Schürer, M; Weiser, D, 2005
)
0.52
" Despite these differences, the maximum slope of the dose-response curve was not increased after SJW ingestion."( Can St John's wort (hypericin) ingestion enhance the erythemal response during high-dose ultraviolet A1 therapy?
Beattie, PE; Dawe, RS; Ferguson, J; Ibbotson, SH; Traynor, NJ; Woods, JA, 2005
)
0.33
" We suggest that HP may enhance salivary cortisol via a U-shaped dose-response relationship and that this may be mediated through a 5-HT2 mechanism."( Effect of sub-chronic treatment with Jarsin (extract of St John's wort, Hypericum perforatum) at two dose levels on evening salivary melatonin and cortisol concentrations in healthy male volunteers.
Franklin, M; Hafizi, S; Hockney, R; Murck, H; Reed, A, 2006
)
0.57
"The objective of this double-blind, randomised, placebo-controlled, multicentre clinical study was to demonstrate the non-inferiority and safety of the hypericum extract STW3-VI in a once-daily dosage regime in the treatment of moderate depression."( Comparative efficacy and safety of a once-daily dosage of hypericum extract STW3-VI and citalopram in patients with moderate depression: a double-blind, randomised, multicentre, placebo-controlled study.
Gastpar, M; Singer, A; Zeller, K, 2006
)
0.78
"The present model may provide additional information for use in identifying optimal dosage regimens of CsA during and after the intake of SJW to prevent an adverse drug interaction between CsA and SJW."( Pharmacokinetic modelling of the interaction between St John's wort and ciclosporin A.
Murakami, H; Murakami, Y; Ohtani, H; Sawada, Y; Tanaka, T; Tsujimoto, M, 2006
)
0.33
"A post-marketing surveillance including 4337 depressive patients shows that a single-dose therapy with highly dosed St."( [Highly dosed St. John's wort extract improves quality of life].
Rudolf, GA; Zeller, K, 2004
)
0.32
" The results should encourage further research to validate these findings and seek the most appropriate preparations and dosing for this popular herb."( St. John's wort and the treatment of mild to moderate depression: a systematic review.
Clement, K; Covertson, CR; Dearing, K; Johnson, MJ,
)
0.13
" Higher (750 and 1000 mg/kg) as well as a lower dose (125 mg/kg) did not affect DeltaT after stress, indicating a U-shaped dose-response curve."( Effects of St. John's wort extract and single constituents on stress-induced hyperthermia in mice.
Butterweck, V; Grundmann, O; Kelber, O, 2006
)
0.33
" All groups of PDT-treated animals with single and fractionated hypericin dosing presented primary vascular reactions including vascular dilatation, congestion, thrombosis and oedema."( Histomorphological changes in murine fibrosarcoma after hypericin-based photodynamic therapy.
Bobrov, N; Brezáni, P; Cavarga, I; Fedorocko, P; Longauer, F; Mirossay, L; Miskovský, P; Rybárová, S; Stubna, J, 2007
)
0.34
" The relevant dosage was already fixed during the acute treatment."( Comparison of Hypericum extract WS 5570 and paroxetine in ongoing treatment after recovery from an episode of moderate to severe depression: results from a randomized multicenter study.
Anghelescu, IG; Kieser, M; Klement, S; Kohnen, R; Szegedi, A, 2006
)
0.69
" Of these, only one-third (32%) reported specific dosage instructions."( General practitioners and St. John's Wort: a question of regulation or knowledge?
Gunn, J; Hegarty, K; McGarry, H; Pirotta, M, 2007
)
0.34
"High dosage combination of oriental wormwood and Japanese St."( [Analysis depending uniform design on the major herbs in qushi huayu compound for anti-hepatic lipotoxicity].
Chen, SD; Feng, Q; Hu, YY, 2008
)
0.35
" Three new dosage forms containing beta-cyclodextrin and surfactants (SDS, ASC8) were compared in the FST with the commercial extract."( Pharmacological in vivo test to evaluate the bioavailability of some St John's Wort innovative oral preparations.
Bergonzi, MC; Bilia, AR; Galeotti, N; Ghelardini, C; Isacchi, B; Vincieri, FF, 2009
)
0.35
"For new MAO-A inhibitors, about 74% occupancy at steady-state dosing is desirable."( Monoamine oxidase A inhibitor occupancy during treatment of major depressive episodes with moclobemide or St. John's wort: an [11C]-harmine PET study.
Houle, S; Meyer, JH; Parkes, J; Rusjan, P; Sacher, J; Sagrati, S; Wilson, AA, 2011
)
0.37
" Dose-response studies suggest a rather small effective concentration range and time-effect data show a primary and transient up-regulation of GR-α mRNA levels and a down-regulation of GR-β mRNA levels after 16 h of treatment."( Hypericum perforatum differentially affects corticosteroid receptor-mRNA expression in human monocytic U-937 cells.
Enning, F; Krieg, JC; Murck, H; Vedder, H, 2011
)
1.81
" Rats' blood pressures were monitored initially, after 1 and 3 weeks of treatment, and after 1 week of discontinuing dosing of both drugs."( Pharmacokinetics and cardiovascular effect of etoricoxib in the absence or presence of St. John's Wort in rats.
Aboul-Enein, HY; Baky, NA; Radwan, MA; Zaghloul, I, 2012
)
0.38
" Despite the fact that considerable effort has been achieved to increase patient' and doctor's information and ability to anticipate their occurrence and consequences in clinical practice, a thorough and detailed health history and dietary recall are essential for identifying potential problems in order to optimize patient prescriptions and drug dosing on an individual basis as well as to increase the treatment risk/benefit ratio."( Is the clinical relevance of drug-food and drug-herb interactions limited to grapefruit juice and Saint-John's Wort?
Bergmann, JF; Lloret-Linares, C; Mouly, S; Sellier, PO; Sene, D, 2017
)
0.46
" Male rats were dosed orally with garlic (120 mg/kg), ginkgo (17 mg/kg), St."( Effect of Garlic, Gingko, and St. John's Wort Extracts on the Pharmacokinetics of Fexofenadine: A Mechanistic Study.
Gerber, JP; Milne, RW; Turkanovic, J; Ward, MB, 2017
)
0.46
" Overall, the highest dosage of WE was found to significantly reduce the symptoms of depression, restoring normal behaviour and reducing levels of oxidative stress by increasing endogenous antioxidant defenses."( The water extract of tutsan (Hypericum androsaemum L.) red berries exerts antidepressive-like effects and in vivo antioxidant activity in a mouse model of post-stroke depression.
Atanasov, AG; Braidy, N; Caprioli, G; Daglia, M; Iannarelli, R; Khanjani, S; Maggi, F; Moghaddam, AH; Nabavi, SF; Nabavi, SM; Sokeng, AJT; Sureda, A, 2018
)
0.77
" These limitations include the lack of botanical verification and omission of extract characterization, inadequate explanation of dosage rationale, and absence of bias limiting protocols."( The safety of St John's wort (Hypericum perforatum) in pregnancy and lactation: A systematic review of rodent studies.
Avila, C; Evans, S; Whitten, D, 2018
)
0.77
" Order of the sessions and dosage conditions were randomized between subjects."( The acute effect of Hypericum perforatum on short-term memory in healthy adults.
Ashby, NJS; Bar-Shaked, M; Ben-Eliezer, D; Yechiam, E, 2019
)
0.84
" Moderate DDI risk was expected when acalabrutinib, osimertinib or olaparib were dosed with SJW."( Food constituent- and herb-drug interactions in oncology: Influence of quantitative modelling on Drug labelling.
Jo, H; Neuhoff, S; Pilla Reddy, V, 2021
)
0.62
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Drug Classes (1)

ClassDescription
penicillanic acids
[compound class information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Research

Studies (2,319)

TimeframeStudies, This Drug (%)All Drugs %
pre-199015 (0.65)18.7374
1990's91 (3.92)18.2507
2000's1176 (50.71)29.6817
2010's782 (33.72)24.3611
2020's255 (11.00)2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Market Indicators

Research Demand Index: 68.99

According to the monthly volume, diversity, and competition of internet searches for this compound, as well the volume and growth of publications, there is estimated to be very strong demand-to-supply ratio for research on this compound.

MetricThis Compound (vs All)
Research Demand Index68.99 (24.57)
Research Supply Index7.89 (2.92)
Research Growth Index5.93 (4.65)
Search Engine Demand Index194.71 (26.88)
Search Engine Supply Index3.23 (0.95)

This Compound (68.99)

All Compounds (24.57)

Study Types

Publication TypeThis drug (%)All Drugs (%)
Trials213 (8.72%)5.53%
Reviews336 (13.75%)6.00%
Case Studies108 (4.42%)4.05%
Observational3 (0.12%)0.25%
Other1,784 (73.00%)84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]