The invention relates to medicine and comprises an agent for the treatment of a viral hepatitis C, which is glutaryl histamine or a pharmaceutically acceptable salt thereof. This agent can also be administered in combination with a pegylated interferon and ribavirin. The invention further relates to a pharmaceutical composition for the treatment of a viral hepatitis C. This invention solves the problem of providing a novel agent, which is effective in the treatment of a viral hepatitis C and makes it possible to produce a sustained virologic response.