The experiment examined the effect of the use of Introvit A + WS-amino acidvitamin nutrient mixture in the diet of dairy cows on the efficiency of milk production. The use of Introvit A + WS-amino acid-vitamin in the diet resulted in an increase in milk productivity due to balancing the protein-energy ratio in cows, an increase in milk fat and protein content, and a 5% reduction in feed consumption due to efficient cow nutrition.