Drugs that decrease Cyclosporine levels: Barbiturates, carbamazepine, oxcarbazepine, phenytoin, nafcillin, sulfadimidine i.v., rifampicin, octreotide, probucol, orlistat, hypericum perforatum, ticlopidine, sulfinpyrazone, terbinafine, bosentan.Drugs that increase Cyclosporine levels: Macrolide antibiotics (e.g., erythromycin, azithromycin and clarithromycin), ketoconazole, fluconazole, itraconazole, voriconazole, diltiazem, nicardipine, verapamil, lercanidipine, metoclopramide, oral contraceptives, danazol, methylprednisolone (high dose), allopurinol, amiodarone, cholic acid and derivatives, protease inhibitors, imatinib, colchicine.Other relevant drug interactions: Cyclosporine may reduce the clearance of digoxin, colchicine, prednisolone and HMG-CoA reductase inhibitors (statins).