A biologically active food supplement intended to increase the athletes' muscle mass comprises Leuzea (or other medicinal plant containing ecdysteroids), male bee brood, ascorbic acid (Vitamin C), Vitamin E, and excipients (calcium stearate, talc, lactose) with the following ratio of components (mass %): Male bee brood 1-70； Leuzea 5-70； Ascorbic acid 1-70； Vitamin E 0.05-30； calcium stearate 0.92-0.95, talc 3-6, lactose—the rest.
