Article
Effect of verapamil on pharmacokinetics and pharmacodynamics of risperidone: in vivo evidence of involvement of P-glycoprotein in risperidone disposition.
Clinical pharmacology and therapeutics - 1 Jul 2005
Nakagami Taku, Yasui-Furukori Norio, Saito Manabu, Tateishi Tomonori, Kaneo Sunao
Abstract excerpt
OBJECTIVE: A recent in vitro study has shown that risperidone is a substrate of P-glycoprotein. The aim of this study was to confirm the effects of verapamil, a P-glycoprotein inhibitor, on the pharmacokinetics of risperidone. METHODS: Two 6-day courses of either 240 mg verapamil daily, an inhibitor of P-glycoprotein, or placebo were administered in a randomized crossover fashion with at least a 4-week washout...
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