The aim. To conduct a comparative analysis of the effect of turmeric extract and 5-aminosalicylic acid (5-ASA) in the composition of rectal suppositories in clinical symptoms and the content of lipid peroxidation products in the mucous membrane of the large intestine in experimental Crohn’s disease (CD).Materials and methods. The experiment was performed on 70 non-linear white Wistar rats. CD was modeled by rectal administration of trinitrobenzenesulfonic acid, rectal suppositories were used each 12 hours: with 5-ASA in a dose of 50 mg, with 10% turmeric extract of original composition, weighing 0.3 g each. On the 3rd, 5th and 7th day of CD, the clinical status was determined by the modified Disease activity index scale and the content of lipid peroxidation products in the large intestine mucosa.Results. In the dynamics of CD in the colon, the content of primary, secondary and final lipid peroxidative products in the heptane and isopropanol phases increases; the severity of clinical signs (weight loss, diarrhea, blood in the fecal masses) increases with increasing content of POL. The use of rectal suppositories with turmeric extract in case of CD reduces the severity of clinical symptoms, reduces the content of lipid peroxidation products mainly in the isopropanol phase of the colon lipid extract; an association was established between the index of clinical activity of CD and the content of lipid peroxidation products in the large intestine. The effectiveness of local application of turmeric extract in the composition of rectal suppositories is comparison with the effectiveness of the use of rectal suppositories with 5-ASA in terms of the clinical activity index and the content of lipid peroxidation products in the large intestine.