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Article
November 14, 1990

Aspirin Increases Blood Alcohol Concentrations in Humans After Ingestion of Ethanol

Author Affiliations

From the Section of Liver Diseases and Nutrition and the Alcohol Research and Treatment Center, Bronx Veterans Administration Medical Center and Mount Sinai School of Medicine, New York, NY. Dr Hernández-Munõz is now with the Departemento de Bioenergetica, Centro de Investigaciones en Fisiologia Celular, Universidad Nacional Autonoma de Mexico, Mexico City.

From the Section of Liver Diseases and Nutrition and the Alcohol Research and Treatment Center, Bronx Veterans Administration Medical Center and Mount Sinai School of Medicine, New York, NY. Dr Hernández-Munõz is now with the Departemento de Bioenergetica, Centro de Investigaciones en Fisiologia Celular, Universidad Nacional Autonoma de Mexico, Mexico City.

JAMA. 1990;264(18):2406-2408. doi:10.1001/jama.1990.03450180070031
Abstract

Gastric first-pass metabolism of ethanol is an important determinant of blood alcohol concentrations. We studied five healthy volunteers after ingestion of ethanol (0.3 g/kg of body weight) and found that blood alcohol concentrations in the fed state (ie, 1 hour after a standard breakfast) were significantly higher when the subjects received 1 g of aspirin 1 hour before ingestion of ethanol than without the drug. In vitro, aspirin clearly decreased the activity of gastric alcohol dehydrogenase in human subjects and in rat models, but not that of hepatic alcohol dehydrogenase in rats. Furthermore, blood alcohol concentrations in rats were unaffected by ingestion of aspirin when ethanol was infused intravenously. Thus, aspirin may increase the bioavailability of ingested ethanol in humans, possibly by reducing ethanol oxidation by gastric alcohol dehydrogenase.

(JAMA. 1990;264:2406-2408)

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