Immunomodulator for calves. The drug is an alternative source of immunoglobulins. Is designed, primarily, for the formation of immunity of newborn calves, as an alternative to colostrum from the first day of life. The second use is strengthening the immune system and protect the intestines during the occurrence of dyspepsia, cryptosporidiosis, coccidiosis in calves in the first months of life. Composition (per 100 g): egg yolk – 10.0 g, yeast extracts of biomass of Aspergillus oryzae – and 10.0 g of Lactobacillus plantarum, 2.5 g, Vitamin B1 5.0 mg, Vitamin B2 2.5 mg, Vitamin B6 – 2.5 mg, Vitamin B12 – 15,0 mg, Vitamin PP – 25.0 mg, Biotin 0.1 mg, Pantothenic acid 10.0 mg, choline chloride 50.0 mg, powder whey – 19,5 g and auxiliary substances: preservative sodium propionate – 6.0 g, dextrose – 2.0 g, fruit pectin – 4.0 g, gum Arabic 4.0 g, acacia gum 4.0 g, xanthan gum 0.8 mg, Inositol 5.0 mg, vanilla planifolia extract – 50.0 mg, excipient: soya oil 10.3 g, water – 45,0 g The drug is administered individually orally in an amount of 30 ml per head.