The invention relates to the field of medicine and concerns an agent that stimulates tissue regeneration and the recovery of diminished tissue and organ function. A medicinal agent for the treatment and/or prophylaxis of a pathological condition selected from the group including metabolic syndrome, impaired glucose tolerance, hepatitis, particularly chronic hepatitis and toxic hepatitis, idiopathic pulmonary fibrosis (IPF), emphysema of the lungs, chronic obstructive pulmonary disease (COPD) and cachexia, particularly as a result of impaired glucose tolerance, pulmonary fibrosis, chronic obstructive pulmonary disease, cancer and other diseases, is proposed in the form of an agent based on Treamide. The latter is a bisamide derivative of dicarboxylic acid of formula (I) or a pharmaceutically acceptable salt thereof.