The author analyzes current data on the potentialities of antiviral therapy of patients suffering from chronic viral hepatitides. Provides the data on the short- and long-term therapeutic effects of interferon drugs and other antiviral agents, describes side effects produced by such type drugs. Compares the clinico-enzymatic, pathohistologic characteristics of the liver status with the degree of elimination of serum antigenic markers of virus B hepatitis in patients afflicted with chronic viral hepatitides. Relates the effects of antiviral drugs in patients suffering from chronic virus non-A non-B hepatitis.