Zovia 1/50e–28

See Contraindications. ALT elevations with HCV regimen ombitasvir/paritaprevir/ritonavir, with or without dasabuvir; discontinue Zovia prior to starting HCV regimen and restart 2wks after completion. May be antagonized by phenytoin, barbiturates, carbamazepine, bosentan, felbamate, griseofulvin, oxcarbazepine, rifampicin, topiramate, rifabutin, rufinamide, aprepitant, St. John’s wort; use backup contraception. May be potentiated by atorvastatin, rosuvastatin, acetaminophen, ascorbic acid, or CYP3A4 inhibitors (eg, itraconazole, ketoconazole, voriconazole, fluconazole, grapefruit juice). May be affected by HIV protease inhibitors. Concomitant colesevelam; give 4hrs apart. May antagonize acetaminophen, temazepam, salicylic acid, morphine, clofibric acid, lamotrigine. May potentiate cyclosporine, prednisolone, theophylline, tizanidine, voriconazole. May need dose adjustment of thyroid hormones. May affect lab tests (eg, coagulation factors, triglycerides, lipids, glucose tolerance, binding proteins, hormone binding globulins, serum folate).