Toxic lesion of the liver was reproduced in albino rats by way of a separate and combined intragastric administration of a 20 per cent ethanol (in doses of 0.65 ml/100 g of mass) and of a 20 per cent CCl4 oil solution (in amounts of 0.3 ml/100 g of mass), thrice in a week for 3 months. Subject to investigation were the intensity of the lipids peroxidation with reference to the diene conjugates level in the liver tissue and peroxide resistance of the peripheral blood erythrocytes, P-450 cytochromes in the supernatant fluid after precipitation of the nuclei and mitochondria, total liver protein and subcellular structures, water-soluble liver protein. The activity of the P-450 cytochrome and the content of the total and water-soluble liver protein were found to change antibathmically to the lipids oxidation intensity, especially in animals receiving both poisons. Oleum hippopheae causes a well-marked anabolic effect which manifests itself in an increased proportion of tissular and serumal proteins. It lowers the free radical oxidation of the lipids, protects the cytochromes P-450 against damage. The mechanisms of the results, obtained are discussed.