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Omeprazole, ranitidine and cimetidine have no effect on peak blood ethanol concentrations, first pass metabolism or area under the time-ethanol curve under 'real-life' drinking conditions

Lookup NU author(s): Emeritus Professor Oliver James


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Background: Considerable controversy persists over the influence of H2-receptor antagonists on the first pass clearance of ethanol. The majority of previously published studies have studied the effects of the drugs on low-dose ethanol in the fasting state. We elected to study the possible interaction under simulated real-life conditions. Methods: Twenty-three volunteers were given 0.6 g/kg body weight ethanol in the form of 4.8% beer following a standardized meal. Blood ethanol levels were measured over the next 3 h. Studies were repeated using ethanol administered as an intravenous infusion while subjects consumed the same volume of de-alcoholized beer. The effects of a minimum of 2 weeks of dosing with cimetidine, ranitidine and omeprazole were examined. Results: Following food, and with ethanol taken in the form of beer, mean first pass metabolism of ethanol was 58% (range 34-78%). No statistically significant difference was found following drug treatment in either percentage first pass metabolism, peak blood ethanol concentration or area under the time-blood ethanol curve. Conclusion: Under these 'real-life' conditions, the concomitant administration of cimetidine, ranitidine or omeprazole is unlikely to have significant physical, social or forensic implications, since they do not significantly change ethanol elimination.

Publication metadata

Author(s): Brown AJM, James OFW

Publication type: Article

Publication status: Published

Journal: Alimentary Pharmacology and Therapeutics

Year: 1998

Volume: 12

Issue: 2

Pages: 141-145

ISSN (print): 0269-2813

ISSN (electronic): 1365-2036

Publisher: Wiley-Blackwell Publishing Ltd.


DOI: 10.1046/j.1365-2036.1998.00281.x

PubMed id: 9692688


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