Increased systemic exposure w/ simvastatin. Increased plasma conc w/ strong CYP3A4 inhibitors (eg, ketoconazole, itraconazole, ritonavir). Increased BP-lowering effects w/ grapefruit juice. Increased risk of hypotension w/ clarithromycin. Decreased plasma conc w/ CYP3A4 inducers eg, rifampicin,
Hypericum perforatum. Risk of increased blood levels of tacrolimus.