Impact of fresh grape juice on the pharmacokinetics of omeprazole: results of a ...

연구 요약

Impact of fresh grape juice on the pharmacokinetics of omeprazole: results of a food-drug interaction study.

Frontiers in pharmacology 학술지에 발표된 이 연구는 Iftikhar T, Iqbal Z, Shah Y 외 연구팀이 수행하였습니다.

이 연구는 'Impact of fresh grape juice on the pharmacokinetics of omeprazole: results of a food-drug interaction study.'에 대한 과학적 분석을 제공합니다.

핵심 내용

Grapes have been widely used for dietary ailments due to their attributed pharmacological activities. Resveratrol, the chief constituent of grapes, is responsible for their pharmacological benefits. However, apart from their beneficial effects, grapes have also recently been considered in drug interaction studies. This study investigated the pharmacokinetic profile of omeprazole administered alone compared to omeprazole administered with grape juice, with a prior intake of grape juice, for 1 continuous week. The study was conducted on two groups of healthy male volunteers [n = 12]. One group was orally administered 40 mg of omeprazole alone, while the other group was administered omeprazole with grape juice. Blood samples were analyzed for omeprazole concentration by a reverse-phase HPLC method. Co-administration of 40 mg omeprazole with grape juice significantly decreased the AUC0-t and Cmax by 32% and 34%, respectively, suggesting a role being played by grapes in the activation of P-glycoprotein and omeprazole metabolizing enzymes, including CYP3A4 and CYP2C19. In conclusion, the addition of grapes as a dietary supplement in patients taking omeprazole for the management of peptic ulcer symptoms may lead to a higher required dose of omeprazole.

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