Some medicines can affect how etravirine works. Tell your doctor if you are using any of the following:Artemether/lumefantrine, boceprevir, clopidogrel, diazepam, St John's wort, telaprevirBlood thinner (including warfarin)Medicine for heart rhythm problems (including amiodarone, bepridil, digoxin, disopyramide, flecainide, lidocaine, mexiletine, propafenone, quinidine)Medicine that weakens the immune system (including cyclosporine, sirolimus, tacrolimus)Medicine to lower cholesterol (including atorvastatin, fluvastatin, lovastatin, pitavastatin, simvastatin)Medicine to treat an infection (including clarithromycin, fluconazole, itraconazole, ketoconazole, posaconazole, rifabutin, rifampin, rifapentine, voriconazole)Medicine to treat erectile dysfunction (including sildenafil, tadalafil, vardenafil)Medicine to treat seizures (including carbamazepine, phenobarbital, phenytoin)Narcotic pain medicine (including buprenorphine, buprenorphine/naloxone, methadone)Other medicine to treat HIV or AIDS (including atazanavir, atazanavir/ritonavir, darunavir/ritonavir, delavirdine, dolutegravir, efavirenz, fosamprenavir, fosamprenavir/ritonavir, indinavir, lopinavir/ritonavir, nelfinavir, nevirapine, rilpivirine, ritonavir, saquinavir/ritonavir, tipranavir/ritonavir)Steroid medicine (including dexamethasone, hydrocortisone, methylprednisolone, prednisolone, prednisone)