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Discover Supplement-Drug Interactions

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Last Updated: 8 months ago

Possible Interaction: Quercetin and Repaglinide



Research Papers that Mention the Interaction

Quercetin (25 microM) and itraconazole (3 microM) inhibited the metabolism of 0.2 microM repaglinide by 58% and 71%, and that of 2 microM repaglinide by 56% and 59%, respectively.
Basic & clinical pharmacology & toxicology  •  2005  |  View Paper
As the protein binding and blood distribution of RPG were observed to be unaltered by QCT, it is plausible that the hepatic first-pass and systemic metabolism of RPG could have been inhibited by QCT , resulting in the increased systemic exposure (AUC and Cmax) of RPG.
Furthermore, the area under the plasma concentration versus time curve (AUC) and peak plasma concentration (Cmax) of RPG administered intravenously and orally in rats were significantly increased by 1.83- and 1.88-fold, respectively, after concurrent administration with QCT.
These results suggest that there is a possibility that clinically significant pharmacokinetic interactions between QCT and RPG could occur, depending on the extent and duration of QCT intake from foods and dietary supplements.
Pharmaceutics  •  2021  |  View Paper