Vaccination may be less effective. Increases in serum K w/ K-sparing & K-containing drugs. Increased AUC of ciclosporin & lercanidipine when co-administered. Risk of nephrotoxic synergy w/ MTX. Increased/decreased plasma or whole blood levels w/ CYP3A4 inhibitors/inducers or P-gp inhibitors/inducers. Decreased levels w/ barbiturates, carbamazepine, oxcarbazepine, phenytoin, nafcillin, sulfadimidine IV, rifampicin, octreotide, probucol, orlistat, St. John's wort, ticlopidine, sulfinpyrazone, terbinafine, bosentan. Increased levels w/ macrolides (eg, erythromycin, azithromycin, clarithromycin), ketoconazole, fluconazole, itraconazole, voriconazole, diltiazem, nicardipine, verapamil, metoclopramide, OCs, danazol, methylprednisolone (high dose), allopurinol, amiodarone, cholic acid & derivatives, PIs, imatinib, colchicine, nefazodone. Increased bioavailability w/ grapefruit juice. Potential increased nephrotoxicity w/ aminoglycosides (including gentamycin, tobramycin), amphotericin B, ciprofloxacin, vancomycin, trimethoprim (+ sulfamethoxazole), NSAIDs (including diclofenac, naproxen, sulindac), melphalan, H
2-receptor antagonists (eg, cimetidine, ranitidine), tacrolimus. Reports of considerable but reversible kidney impairment w/ fibric acid derivatives (eg, bezafibrate, fenofibrate). Increased risk of gingival hyperplasia w/ nifedipine. May increase plasma levels of substrates of CYP3A4 & P-gp. May reduce clearance of digoxin, colchicine, prednisolone, HMG-CoA reductase inhibitors (statins), etoposide, aliskiren, bosentan or dabigatran. Enhanced toxicity of digoxin, colchicine, statins. Increased blood levels of everolimus & sirolimus. Increased plasma conc of repaglinide. Increased exposure of ambrisentan & anthracyclines (eg, doxorubicin, mitoxanthrone, daunorubicine). Decreased mean exposure of mycophenolic acid.