Increased plasma conc w/ cyclosporine; rifampicin; clopidogrel sulfate, clarithromycin, HIV PIs eg, ritonavir; fluconazole. Muscle toxicity w/ HMG-CoA reductase inhibitors eg, pravastatin Na, simvastatin, fluvastatin Na. Decreased plasma conc w/ anion exchange resins eg, cholestyramine, colestimide; strong CYP3A inducers eg, carbamazepine, phenobarb, phenytoin, food containing
Hypericum perforatum (St. John's wort).