You will be closely monitored if you are taking these medicines with Telzir/ ritonavir: • atorvastatin up to 20 mg per day (used to lower cholesterol) • carbamazepine, phenobarbital (used to treat epilepsy) • cyclosporin, rapamycin, tacrolimus (used to suppress the immune system) • desipramine, nortriptyline, paroxetine and similar medicines (used to treat depression) • warfarin and other medicines that stop blood clotting.