Cholestyramine and Valproic acid interaction

Cholestyramine and Valproic acid: the Valproic acid prescribing label describes an interaction that usually calls for monitoring, a dose change, or spacing the doses.

Moderate

Usually manageable with monitoring or a dose change. Tell your pharmacist you take both.

What the FDA labels say

From the Valproic acid label · effective 2024-05-02

Moderate

Cholestyramine Cholestyramine, when concurrently administered with valproic acid, led to, on average, a 14% decrease in plasma levels of valproic acid in a study conducted in 6 healthy subjects administered valproic acid oral solution and cholestyramine.

Drug interactionsnames CholestyramineView label on DailyMed
Minor

Delaying the administration of cholestyramine relative to valproic acid administration by 3 hours may lessen the interaction.

Drug interactionsnames CholestyramineView label on DailyMed

Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.

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Not medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.