Brewer's yeast is a source of natural B-complex vitamins. It aids in the breakdown and conversion of proteins, sugars, and fats, thus regulating metabolism. It contains natural proteins (46% protein) with essential amino acids, such as lysine at a rate of 3.5%. It has a high level of easily absorbable metabolic energy and a high level of mineral compounds. It is a natural probiotic and growth stimulator that limits the growth of E. coli bacteria. The dosage in the mixture is 3-10%.