The composition of the diet is very significant for the development of various physical qualities in humans. The use of balanced supplements has a positive effect on the body’s condition and increases the success of trainees in many sports. One of the options for optimizing nutrition for athletes can be the use of the sports nutrition multicomplex MDX. This product is obtained by microbiological processing of whey followed by low-temperature thickening. It contains oligopeptides and free amino acids, glucose, galactose, nucleic acids, a number of vitamins and microelements, betacarotene, ergosterol, folic acid, endosomal enzymes of lactic acid bacteria. In addition, the product contains a live culture of lactic acid bacteria: L. Lactis, L. Thermophyilus, L. Bulgaricus. Hand-to-hand fighters, judokas and Greco-Roman wrestlers took part in the work. Athletes (70 males: adolescents and young men) regularly took this product according to the following scheme: five days 1g/kg body weight and two days off. The daily dose was divided into two parts. Combat athletes took one part 30 minutes before the start of training, the second they took 30 minutes after the end of training. It was found that among the sports specializations taken into account, judoists who received the multicomplex MDX sports nutrition had the highest speed. They were faster than hand-to-hand fighters and fighters.