Serine

Proline

Non-essential, proteinogenic amino acid derived from ornithine and glutamine. Mainly present in proteins and collagen

Threonine

Essential proteinogenic amino acid and precursor of glycine, which is a component of connective tissue, cartilage, skin, hair, teeth, bones, tendons and muscles. Contributes to glutathione formation

Glycine

Semi-essential proteinogenic amino acid, precursor of the important antioxidant glutathione. Component of connective tissue, cartilage, skin, hair, teeth, bones, tendons and muscles

Tryptophan

Essential proteinogenic amino acid and precursor of the important neurotransmitter serotonin (mood, sleep) and vitamin B3 (niacin)