FIELD: medicine, gastroentrology. SUBSTANCE: invention relates to parapharmaceutical industry producing preparations of curative and prophylactic designation that can be used for prophylaxis and accessory treatment of gastritis, duodenitis and colitis of different etiology, ulcer disease. Invention proposes biologically active supplement for prophylaxis and supporting therapy in digestive tract diseases. Supplement is based on medicinal plants and comprises the following components: glabrous licorice roots dry extract, elecampane roots dry aqueous concentrate, dry concentrates of Saint- -John's-wort herb tincture, propolis and carrot juice, flower pollen, vitamin E, zinc sulfate, aluminium hydroxide, milled oat, starch, calcium stearate, talc and sugar taken in definite weight ratios. The use of this supplement results to improvement of indices of T-cellular immunity revealing due to increased level of T-helpers, clinic indices in patients with pathology of digestive organs being for short times. EFFECT: valuable medicinal properties of supplement. 2 cl, 5 tbl, 4 ex
