The present invention relates to a botanical drug or dietary supplement for use in the treatment of patients suffering from Hepatitis C virus infection. More particularly, it relates to a botanical drug consisting essentially of four botanical drug substances, optionally formulated with excipients, for use either in alleviating the symptoms of Hepatitis, particularly chronic Hepatitis C, and/or inhibiting the activity of the causative Hepatitis C virus. The botanical raw materials, botanical drug substances or botanical ingredients used are from a species of each of the genera: (a) Silybum; (b) Astragalus or Hedysarum; (c) Salvia; and (d) Schisandra.