Aim:
The addition of ribavirin (RIBA) to the standard treatment with interferon (IFN) alpha led to an improvement in sustained virologic response (SVR) from less than 20% with IFN monotherapy to 40-45% in combination therapy. The aim of this study is to assess the therapeutic efficacy and safety of IFN alpha (PDferon) in combination with RIBA on Iranian patients with chronic hepatitis C (CHC).