“Recent research by Diana L. Sylvestre, MD, assistant clinical professor in the Department of Medicine at the University of California, San Francisco, and colleagues suggests that the use of cannabis during hepatitis C virus (HCV) treatment may offer symptomatic and virological benefit to some patients by helping them maintain adherence to the challenging and often painful medication regimen.”

https://www.ucsf.edu/news/2006/09/6514/cannabis-use-can-improve-effectiveness-hepatitis-c-therapy