In addition to the Hep C meds, he was taking weekly shots of procrit, Xifaxin to help with the HE, a multivitamin, Ursodial, vitamin D, daily aspirin, magnesium oxide and his immunosuppressant drug,
Prograf (tacrolimus).
I had to stop the procrit, Xifaxin and multivitamin to help reduce the hepatic encephalopathy so he could make it through treatment. Bottom line - the more advanced the liver disease the more likely there will be interaction issues with treatment.