Before taking daclatasvir,
tell your doctor and pharmacist if you are allergic to daclatasvir, any other medications, or any of the ingredients in daclatasvir tablets. Ask your pharmacist for a list of the ingredients.
tell your doctor if you are taking carbamazepine (Carbatrol, Epitol, Equetro, Tegretol, Teril), phenytoin (Dilantin, Phenytek), rifampin (Rifadin, Rimactane, in Rifamate, Rifater), or St. John's wort. Your doctor will probably tell you not to take daclatasvir if you are taking one or more of these medications.
tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, nutritional supplements, you are taking or plan to take. Be sure to mention any of the following: amiodarone (Nexterone, Pacerone); certain antibiotics such as clarithromycin (Biaxin, in Prevpac), nafcillin, rifapentine (Priftin), and telithromycin (Ketek); certain antifungals such as itraconazole (Onmel, Sporanox), ketoconazole, posaconazole (Noxafil), and voriconazole (Vfend); bosentan (Tracleer); buprenorphine and naloxone (Suboxone, Zubsolv); certain cholesterol-lowering medications (statins) such as atorvastatin (Lipitor, in Caduet), fluvastatin (Lescol), pitavastatin (Livalo), pravastatin (Pravachol), rosuvastatin (Crestor), and simvastatin (Flolipid, Zocor, in Vytorin); medication containing cobicistat (Stribild); dabigatran (Pradaxa); dexamethasone; digoxin (Lanoxin); efavirenz (Sustiva, in Atripla), etravirine (Intelence); certain HIV protease inhibitors such as atazanavir (Reyataz, in Evotaz), indinavir (Crixivan), nelfinavir (Viracept), ritonavir (Norvir, in Kaletra, Technivie, Viekira Pak), and saquinavir (Invirase); modafinil (Provigil); nefazodone; nevirapine (Viramune); and warfarin (Coumadin, Jantoven). Your doctor may need to change the doses of your medications or monitor you carefully for side effects. Many other medications may also interact with daclatasvir, so be sure to tell your doctor about all the medications you are taking, even those that do not appear on this list.
tell your doctor if you have had a liver transplant, any type of liver disease other than hepatitis C, or heart disease.
tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. If you become pregnant while taking daclatasvir, call your doctor.