To prepare the medicament the alcoholic extracts of roots of Angelica and roots of licorice Glycyrrhiza glabra are mixed. Then the obtained mixture is mixed with the alcoholic extracts of Clown's mustard Iberis amara, leaves of peppermint Menthe piperita, flowers of horse gowan Matricaria chamomilla, fruits of caraway Carum carvi, leaves of Melissa officinalis, fruits of thistle Carduus marianus and celandine Chelido¬nium majus. The medicament produced according to this method is used for treatment of diseases of gastrointestinal tract.