Valine is a branched-chain essential amino acid that has stimulant activity. It promotes muscle growth and tissue repair.
Lysine is an amino acid (building block of protein). People use it to make medicine. Lysine is used for preventing and treating cold sores.
Methionine is an amino acid. Methionine is found in meat, fish, and dairy products. It plays an important role in the many functions within the body.
Threonine is an amino acid that is used in the biosynthesis of proteins.
Phenylalanine is a precursor for tyrosine, the monoamine neurotransmitters dopamine, norepinephrine (noradrenaline), and epinephrine (adrenaline), and the skin pigment melanin. Phenylalanine is found naturally in the breast milk of mammals.