diphenhydramine and Respiratory Tract Infections

diphenhydramine has been researched along with Respiratory Tract Infections in 14 studies

Diphenhydramine: A histamine H1 antagonist used as an antiemetic, antitussive, for dermatoses and pruritus, for hypersensitivity reactions, as a hypnotic, an antiparkinson, and as an ingredient in common cold preparations. It has some undesired antimuscarinic and sedative effects.
diphenhydramine : An ether that is the benzhydryl ether of 2-(dimethylamino)ethanol. It is a H1-receptor antagonist used as a antipruritic and antitussive drug.
antitussive : An agent that suppresses cough. Antitussives have a central or a peripheral action on the cough reflex, or a combination of both. Compare with expectorants, which are considered to increase the volume of secretions in the respiratory tract, so facilitating their removal by ciliary action and coughing, and mucolytics, which decrease the viscosity of mucus, facilitating its removal by ciliary action and expectoration.

Respiratory Tract Infections: Invasion of the host RESPIRATORY SYSTEM by microorganisms, usually leading to pathological processes or diseases.

Research

Studies (14)

Authors

Clinical Trials (5)

Trial Overview

Trial Outcomes

Change in Cough Reflex Sensitivity to Capsaicin

increase in C5 (decrease in cough reflex sensitivity). Capsaicin cough challenge involves subjects breathing in incremental doubling concentrations of aerosolized capsaicin, 1 minute apart, until the concentration of capsaicin (micromolar) inducing 5 or more coughs (C5) is reached. (NCT02062710)
Timeframe: 2 hours after study drug administration

Change in Day Cough Score at End of Study (From D0 to D4)

"A validated cough questionnaire measuring 3 aspects of daytime cough (frequency, severity, bothersomeness) on a 7 point Likert scale was used each evening to rate the passed day, as regards these aspects. The scale rates each parameter from 0 (not at all) to 6 (extremely). Every day of the trial is rated. The last evening of the study (D4) the parents rated the passed day by scoring from 0-6 each of the 3 aspects of day cough. The summed score for all aspects gives the combined day cough score. This score, ranging between 0-18, was subtracted from the sum of all aspects, also ranging between 0-18, form the basal day cough score of the day before enrollment (D0). This change is recorded as change in combined day cough score and it refers to the change from D0 to D4. Negative values of the change indicate an improvement in the condition of the patient." (NCT01968434)
Timeframe: 4 nights (onset of trial Night 1 to Night 4) and 3 days

Change in Night Cough Score at End of Study (From N0 to N4)

"A validated cough questionnaire measuring 5 aspects of night cough (frequency, severity, bothersomeness, child sleep and parents' sleep) on a 7 point Likert scale was used each morning to rate the passed night. The scale rates each parameter from 0 (not at all) to 6 (extremely). Every night of the trial is rated. The morning after the last night of the study (N4) the parents rated the passed night by scoring from 0-6 each of the 5 aspects of night cough. The summed score for all aspects gives the combined night cough score. This score, ranging between 0-30, was subtracted from the sum of all aspects, also ranging between 0-30, form the basal night cough score of the night before enrollment (N0). This change is recorded as change in combined night cough score and it refers to the change from N0 to N4. Negative values of the change indicate an improvement in the condition of the patient." (NCT01968434)
Timeframe: 4 nights (onset of trial Night 1 to Night 4) and 3 days

Change in Night Cough Score on First Night of Treatment (From N0 to N1)

"Night cough is most bothersome to the child and family. Cough was measured with a validated questionnaire which asks parents to rate 5 aspects of night cough: frequency, severity, bothersomeness, child sleep and parent sleep according to a 7 point Likert scale, from 0 (not at all) to 6 (extremely). Lower scores indicate a better condition. The morning after the first night of treatment (N1) the parents rated the passed night by scoring from 0-6 each of the 5 aspects of night cough. The sum of scores for all 5 aspects gives the combined night cough score. This score, ranging between 0-30, was subtracted from the sum of all aspects, also ranging between 0-30, form the basal night cough score of the night before enrollment (N0). This change is recorded as change in combined night cough score and it refers to the change from N0 to N1. Negative values of the change indicate an improvement in the condition of the patient." (NCT01968434)
Timeframe: 1 night from before enrollment (N0) to first night after treatment (N1)

Trials

7 trials available for diphenhydramine and Respiratory Tract Infections

Other Studies

7 other studies available for diphenhydramine and Respiratory Tract Infections