3200 mg of essential amino acids per servingEssential amino acid ratio recommended by WHO** The ratio of the different essential amino acids in the product follows the recommendation of the World Health Organization (WHO). (Protein and Amino Acid Requirements in Human Nutrition – Report from the Joint FAO/WHO/UNU Expert Consultation.)ESSENTIAL AMINO ACIDSAs their name show, essential amino acids are vital for the human body, because we are not able to produce them or produce the necessary amount of them. For this reason, it is important to supplement their intake from external sources, in an optimal amount and ratio. Proteins, which building blocks are amino acids, play an unquestionable role in the processes of muscle building, because protein contributes to the growth and maintenance of muscle mass.What does BioTechUSA EAA capsule contain?In 1 serving (4 capsules):697 mg of L-leucine535 mg of L-lysine465 mg of L-valine447 mg of L-phenylalanine358 mg of L-isoleucine268 mg of L-threonine179 mg of L-methionine160 mg of L-histidine72 mg of L-tryptophaneLike all BioTechUSA products, EAA capsule consists of only safe and carefully selected ingredients.DirectionsTake 4x1 capsules a day with a huge glass of water. Do not exceed the recommended daily amount!Warnings:Dietary supplements do not replace a varied and balanced diet and healthy lifestyle. Keep out of reach of small children!