Page last updated: 2024-11-01

omeprazole and Vitamin B 12 Deficiency

omeprazole has been researched along with Vitamin B 12 Deficiency in 14 studies

Omeprazole: A 4-methoxy-3,5-dimethylpyridyl, 5-methoxybenzimidazole derivative of timoprazole that is used in the therapy of STOMACH ULCERS and ZOLLINGER-ELLISON SYNDROME. The drug inhibits an H(+)-K(+)-EXCHANGING ATPASE which is found in GASTRIC PARIETAL CELLS.
omeprazole : A racemate comprising equimolar amounts of (R)- and (S)-omeprazole.
5-methoxy-2-{[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl}-1H-benzimidazole : A member of the class of benzimidazoles that is 1H-benzimidazole which is substituted by a [4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl group at position 2 and a methoxy group at position 5.

Vitamin B 12 Deficiency: A nutritional condition produced by a deficiency of VITAMIN B 12 in the diet, characterized by megaloblastic anemia. Since vitamin B 12 is not present in plants, humans have obtained their supply from animal products, from multivitamin supplements in the form of pills, and as additives to food preparations. A wide variety of neuropsychiatric abnormalities is also seen in vitamin B 12 deficiency and appears to be due to an undefined defect involving myelin synthesis. (From Cecil Textbook of Medicine, 19th ed, p848)

Research Excerpts

ExcerptRelevanceReference
"A 38-year-old Caucasian man with mild hypertension and no other significant medical history developed profound erectile dysfunction within 2 days of initiating over-the-counter omeprazole therapy, with erectile function rapidly normalizing following discontinuation of the drug."8.02Abrupt-onset, profound erectile dysfunction in a healthy young man after initiating over-the-counter omeprazole: a case report. ( Perry, TW, 2021)
"A 38-year-old Caucasian man with mild hypertension and no other significant medical history developed profound erectile dysfunction within 2 days of initiating over-the-counter omeprazole therapy, with erectile function rapidly normalizing following discontinuation of the drug."4.02Abrupt-onset, profound erectile dysfunction in a healthy young man after initiating over-the-counter omeprazole: a case report. ( Perry, TW, 2021)
"A 78-year-old nonvegetarian white woman with symptomatic gastroesophageal reflux (GER) was started on cimetidine 300 mg 4 times daily in February 1990 and took various other antisecretory medications over the course of the next 4 1/2 years."3.71Vitamin B(12) deficiency associated with histamine(2)-receptor antagonists and a proton-pump inhibitor. ( Page, RL; Ruscin, JM; Valuck, RJ, 2002)
"As chronic use of antiulcer medications might predispose older persons to cobalamin deficiency, we studied participants (> 65 years) in the clinical examination of the Canadian Study of Health and Aging to test the association between the use of an antiulcer medication (histamine-2 blocker or proton pump inhibitor) at baseline with initiation of cobalamin replacement during the 5 year follow-up period."1.31The association between antiulcer medication and initiation of cobalamin replacement in older persons. ( Mitchell, SL; Rockwood, K, 2001)
"H pylori was detected in the dental plaque with camphylobacter-like organism test gels."1.31The relationship between gastric-oral Helicobacter pylori and oral hygiene in patients with vitamin B12-deficiency anemia. ( Avcu, F; Avcu, N; Beyan, C; Kaptan , K; Nevruz, O; Ozyurt, M; Ural, AU; Yalçin, A, 2001)
"Whether such treatment will result in vitamin B12 deficiency is controversial."1.30Effect of long-term gastric acid suppressive therapy on serum vitamin B12 levels in patients with Zollinger-Ellison syndrome. ( Gibril, F; Jensen, RT; Sutliff, VE; Termanini, B; Venzon, DJ; Yu, F, 1998)

Research

Studies (14)

TimeframeStudies, this research(%)All Research%
pre-19900 (0.00)18.7374
1990's5 (35.71)18.2507
2000's6 (42.86)29.6817
2010's1 (7.14)24.3611
2020's2 (14.29)2.80

Authors

AuthorsStudies
Rehmani, A1
Mehta, I1
Siu, NY1
Smith, E1
Perry, TW1
Reimer, C1
Bytzer, P1
Hershko, C1
Hoffbrand, AV1
Keret, D1
Souroujon, M1
Maschler, I1
Monselise, Y1
Lahad, A1
Raghunath, AS1
O'Morain, C1
McLoughlin, RC1
Marcuard, SP1
Albernaz, L1
Khazanie, PG1
Bellou, A1
Aimone-Gastin, I1
De Korwin, JD1
Bronowicki, JP1
Moneret-Vautrin, A1
Nicolas, JP1
Bigard, MA1
Guéant, JL1
Termanini, B1
Gibril, F1
Sutliff, VE1
Yu, F1
Venzon, DJ1
Jensen, RT1
Brieva, L1
Ara, JR1
Bertol, V1
Canellas, A1
del Agua, C1
Bradford, GS1
Taylor, CT1
Mitchell, SL1
Rockwood, K1
Avcu, N1
Avcu, F1
Beyan, C1
Ural, AU1
Kaptan , K1
Ozyurt, M1
Nevruz, O1
Yalçin, A1
ter Heide, H1
Hendriks, HJ1
Heijmans, H1
Menheere, PP1
Spaapen, LJ1
Bakker, JA1
Forget, PP1
Ruscin, JM1
Page, RL1
Valuck, RJ1

Clinical Trials (2)

Trial Overview

TrialPhaseEnrollmentStudy TypeStart DateStatus
Comparing Omeprazole With Fluoxetine for Treatment of Non Erosive Reflux Disease and Its Subgroups: a Double-blind Placebo-controlled Clinical Trial[NCT01269788]Phase 2/Phase 3144 participants (Actual)Interventional2010-08-31Completed
Proton Pump Inhibitors in the Prevention of Iron Reaccumulation in Patient With Hereditary Hemochromatosis[NCT01524757]48 participants (Anticipated)Interventional2012-03-31Not yet recruiting
[information is prepared from clinicaltrials.gov, extracted Sep-2024]

Reviews

2 reviews available for omeprazole and Vitamin B 12 Deficiency

ArticleYear
Review article: the long-term use of proton-pump inhibitors.
    Alimentary pharmacology & therapeutics, 2005, Volume: 22 Suppl 1

    Topics: Age Factors; Enzyme Inhibitors; Gastritis, Atrophic; Gastroesophageal Reflux; Helicobacter Infection

2005
Omeprazole and vitamin B12 deficiency.
    The Annals of pharmacotherapy, 1999, Volume: 33, Issue:5

    Topics: Humans; Omeprazole; Vitamin B 12 Deficiency

1999

Trials

1 trial available for omeprazole and Vitamin B 12 Deficiency

ArticleYear
Omeprazole therapy causes malabsorption of cyanocobalamin (vitamin B12)
    Annals of internal medicine, 1994, Feb-01, Volume: 120, Issue:3

    Topics: Adult; Humans; Malabsorption Syndromes; Male; Middle Aged; Omeprazole; Protein Binding; Reference Va

1994

Other Studies

11 other studies available for omeprazole and Vitamin B 12 Deficiency

ArticleYear
Nutritional Optic Neuropathy From Chronic Omeprazole Use.
    Journal of neuro-ophthalmology : the official journal of the North American Neuro-Ophthalmology Society, 2021, Jun-01, Volume: 41, Issue:2

    Topics: Adult; Contrast Sensitivity; Female; Gastroesophageal Reflux; Humans; Omeprazole; Optic Disk; Optic

2021
Abrupt-onset, profound erectile dysfunction in a healthy young man after initiating over-the-counter omeprazole: a case report.
    Journal of medical case reports, 2021, Jul-24, Volume: 15, Issue:1

    Topics: Adult; Aged; Enterocolitis, Pseudomembranous; Erectile Dysfunction; Humans; Male; Omeprazole; Proton

2021
[Adverse events associated with long-term use of proton pump inhibitors].
    Ugeskrift for laeger, 2012, Sep-24, Volume: 174, Issue:39

    Topics: Anti-Ulcer Agents; Bacterial Infections; Congenital Abnormalities; Dyspepsia; Fractures, Bone; Gastr

2012
Role of autoimmune gastritis, Helicobacter pylori and celiac disease in refractory or unexplained iron deficiency anemia.
    Haematologica, 2005, Volume: 90, Issue:5

    Topics: Adolescent; Adult; Aged; Amoxicillin; Anemia, Iron-Deficiency; Antibodies, Bacterial; Autoantibodies

2005
Cobalamin deficiency with megaloblastic anaemia in one patient under long-term omeprazole therapy.
    Journal of internal medicine, 1996, Volume: 240, Issue:3

    Topics: Anemia, Megaloblastic; Enzyme Inhibitors; Gastroesophageal Reflux; Hematinics; Humans; Malabsorption

1996
Effect of long-term gastric acid suppressive therapy on serum vitamin B12 levels in patients with Zollinger-Ellison syndrome.
    The American journal of medicine, 1998, Volume: 104, Issue:5

    Topics: Achlorhydria; Adenosine Triphosphatases; Adolescent; Adult; Aged; Anti-Ulcer Agents; Drug Monitoring

1998
[Polyneuropathy caused by vitamin B12 deficiency secondary to chronic atrophic gastritis and giardiasis].
    Revista de neurologia, 1998, Volume: 26, Issue:154

    Topics: Amoxicillin; Anemia, Pernicious; Anti-Bacterial Agents; Antiprotozoal Agents; Bismuth; Duodenitis; E

1998
The association between antiulcer medication and initiation of cobalamin replacement in older persons.
    Journal of clinical epidemiology, 2001, Volume: 54, Issue:5

    Topics: Aged; Anti-Ulcer Agents; Canada; Female; Histamine H2 Antagonists; Humans; Male; Omeprazole; Stomach

2001
The relationship between gastric-oral Helicobacter pylori and oral hygiene in patients with vitamin B12-deficiency anemia.
    Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics, 2001, Volume: 92, Issue:2

    Topics: Adult; Aged; Aged, 80 and over; Amoxicillin; Anemia, Pernicious; Anti-Bacterial Agents; Anti-Ulcer A

2001
Are children with cystic fibrosis who are treated with a proton-pump inhibitor at risk for vitamin B(12) deficiency?
    Journal of pediatric gastroenterology and nutrition, 2001, Volume: 33, Issue:3

    Topics: 2-Pyridinylmethylsulfinylbenzimidazoles; Adolescent; Case-Control Studies; Child; Child, Preschool;

2001
Vitamin B(12) deficiency associated with histamine(2)-receptor antagonists and a proton-pump inhibitor.
    The Annals of pharmacotherapy, 2002, Volume: 36, Issue:5

    Topics: Aged; Cimetidine; Creatinine; Enzyme Inhibitors; Female; Folic Acid; Gastroesophageal Reflux; Histam

2002