May increase whole blood trough conc & increase risk of serious adverse reactions (eg, neurotoxicity, QT prolongation) w/ grapefruit or grapefruit juice; moderate or weak CYP3A4 inhibitors eg, antifungal agents (eg, fluconazole, isavuconazole, clotrimazole, miconazole), macrolides (eg, azithromycin), Ca channel blockers (eg, nifedipine, nicardipine, diltiazem, verapamil), amiodarone, danazol, ethinylestradiol, lansoprazole, omeprazole, HCV antivirals (elbasvir/grazoprevir & glecaprevir/pibrentasvir), CMV antiviral (letermovir), & tyrosine kinase inhibitors (nilotinib, crizotinib & imatinib) & (Chinese) herbal remedies containing extr of
Schisandra sphenanthera; bromocriptine, cortisone, dapsone, ergotamine, gestodene, lidocaine, mephenytoin, midazolam, nilvadipine, norethisterone, quinidine, tamoxifen; prokinetic agents eg, metoclopramide, cimetidine & Mg-Al-hydroxide. May increase whole blood trough conc & synergistic/additive nephrotoxic effects w/, & prolonged t
½ of ciclosporin. May enhance nephrotoxic or neurotoxic effects w/ products known to have nephrotoxic or neurotoxic effects (eg, aminoglycosides, gyrase inhibitors, vancomycin, sulfamethoxazole + trimethoprim, NSAIDs, ganciclovir, acyclovir, amphotericin B, ibuprofen, cidofovir, foscarnet). May increase whole blood trough conc & increase risk of serious adverse reactions (eg, nephrotoxicity, neurotoxicity, QT prolongation) which requires close monitoring w/ strong CYP3A4 inhibitors eg, antifungal agents (eg, ketoconazole, itraconazole, posaconazole, voriconazole), macrolides (eg, telithromycin, troleandomycin, clarithromycin, josamycin, erythromycin), HIV PIs (eg, ritonavir, nelfinavir, saquinavir), HCV PIs (eg, telaprevir, boceprevir, & combination of ombitasvir & paritaprevir w/ ritonavir, when used w/ & w/o dasabuvir), nefazodone, pharmacokinetic enhancer (cobicistat), & kinase inhibitors (idelalisib, ceritinib). May decrease whole blood trough conc & increase risk of rejection w/ strong CYP3A4 inducers eg, rifampicin, phenytoin, carbamazepine, apalutamide, enzalutamide, mitotane, or St. John's wort (
Hypericum perforatum); moderate CYP3A4 inducers eg, metamizole, phenobarb, INH, rifabutin, efavirenz, etravirine, nevirapine; maintenance doses of corticosteroids. Possible interactions w/ products/other active substances known to have high affinity for plasma proteins eg, NSAIDs, oral anticoagulants, oral antidiabetics. May have impact on blood levels (increase or decrease) w/ high dose prednisolone or methylprednisolone. May have impact on pharmacokinetics by changes in liver function during, & may decrease blood levels w/ direct-acting antiviral therapy, related to clearance of hepatitis virus. May be associated w/ hyperkalaemia, or may increase pre-existing hyperkalaemia w/ high K intake, or K-sparing diuretics (eg, amiloride, triamterene, or spironolactone); other agents that increase serum K eg, trimethoprim & cotrimoxazole (trimethoprim/sulfamethoxazole). Increased blood level of phenytoin. May reduce clearance of steroid-based contraceptives leading to increased hormone exposure. Potentially decrease clearance & increase t
½ of pentobarbital & antipyrine. May interfere w/ mycophenolic acid's enterohepatic cycle potentially having to reduce plasma level & efficacy of mycophenolic acid. May affect response to vaccination; avoid use of live attenuated vaccines.