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Grapefruit juice increases serum concentrations of atorvastatin and has no effect on pravastatin.
Hukkinen SK, Varhe A, Olkkola KT et al. Plasma concentrations of triazolam are increased by concomitant ingestion of grapefruit juice. Ozdemir M, Aktan Y, Boydag BSInteraction between grapefruit juice and diazepam in humans. Bailey DG, Spence, JD, Munoz C et al. Interaction of citrus juices with felodipine and nifedipine.