Comorbidities, concomitant medications and potential drug-drug interactions with interferon-free direct-acting antiviral agents in hepatitis C patients in Taiwan.

Our population represented an elderly demographic, with a high prevalence of comorbidities and widespread use of concomitant medications. The potential drug-drug interactions between these concomitant medications and DAA regimens differed, with the fewest potential interactions with sofosbuvir-based regimens.