FIELD: medicine, hepatology, phytotherapy. SUBSTANCE: invention relates to parapharmaceutical industry producing preparations for curative and prophylactic designation and can be used for prophylaxis and accessory treatment in liver diseases. Invention proposes biologically active supplement used for prophylaxis and supporting therapy in liver diseases based on medicinal plant and containing dry aqueous concentrates of dandelion roots, barberry fruits, chicory herb, milk thistle herb, common immortelle herb and flowers dry spirituous concentrate, flower pollen, ginger roots, citric acid, starch, calcium stearate, sugar, milled oat and talc taken in the definite ratio of components. The supplement shows broad prophylactic spectrum of effect, improves functional state in treatment of chronic liver diseases, useful in oral intake and prolonged storage time. EFFECT: valuable medicinal and pharmaceutical properties of supplement. 1 tbl
