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. 1994 Feb;37(2):208–211. doi: 10.1111/j.1365-2125.1994.tb04263.x

Inhibition of gastric alcohol dehydrogenase activity by histamine H2-receptor antagonists has no influence on the pharmacokinetics of ethanol after a moderate dose.

A Mallat 1, F Roudot-Thoraval 1, J F Bergmann 1, H Trout 1, G Simonneau 1, C Dutreuil 1, L E Blanc 1, D Dhumeaux 1, J C Delchier 1
PMCID: PMC1364600  PMID: 7910473

Abstract

Ethanol undergoes gastric first pass metabolism by alcohol dehydrogenase (ADH). We have shown that cimetidine and famotidine both cause competitive inhibition of human gastric ADH in vitro. However, in a randomized 4-way cross-over study in 12 healthy subjects a 7-day course of treatment with cimetidine (800 mg day-1), ranitidine (300 mg day-1) or famotidine (40 mg day-1), did not modify the pharmacokinetics of ethanol given as a post-prandial 0.3 g kg-1 dose. We conclude that gastric mucosal concentrations of histamine H2-receptor blockers achieved after oral dosing are probably too low to cause significant inhibition of gastric ADH in vivo.

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Selected References

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