DRUG INTERACTIONS: See also How to Use section.Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.Some products that may interact with this drug include: aluminum/magnesium antacid, cyclosporine, sirolimus, temsirolimus, ziprasidone, other drugs that may increase the level of potassium in the blood (such as "water pills" including amiloride, spironolactone), other drugs that weaken the immune system/increase the risk of infection (such as natalizumab, rituximab).Many drugs besides tacrolimus may affect the heart rhythm (QT prolongation), including amiodarone, dofetilide, pimozide, procainamide, quinidine, sotalol, macrolide antibiotics (such as erythromycin), among others.Other medications can affect the removal of tacrolimus from your body, which may affect how tacrolimus works. Examples include caspofungin, cimetidine, danazol, bromocriptine, nefazodone, ethinyl estradiol, methylprednisolone, St. John's wort, azole antifungals (such as itraconazole, voriconazole), calcium channel blockers (such as nifedipine, verapamil), proton pump inhibitors (such as omeprazole, lansoprazole), HIV protease inhibitors (such as nelfinavir, ritonavir), other protease inhibitors (such as boceprevir, telaprevir), rifamycins (such as rifampin, rifabutin), certain anti-seizure drugs such as (carbamazepine, phenobarbital, phenytoin), among others.
Quick GuidePrescription Drug Abuse: Know The Warning Signs
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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