how much lysine is required in a human body
Recent intake recommendations to meet the lysine requirement range from 64 to 30 mg/(kg Â· d) for 0.5-y infants and adults (>18 y), respectively. Lysine intake in the Western human diet is in the range 40â180 mg/(kg Â· d). An upper limit of 300â400 mg/(kg Â· d) can be considered in humans. l-Lysine is a basic amino acid characterized by the presence of an amino group at the end of a 4-carbon aliphatic side chain [-(CH 2) 4-NH 3 +].