Glutamine is one of 20 naturally occurring amino acids in the dietary protein. In fact, L-glutamine is the most abundant amino acid in the bloodstream and makes up 30–35 percent of the amino acid nitrogen in your blood.
Arginine is an amino acid that changes into nitric oxide (NO). Nitric oxide is a powerful neurotransmitter that helps blood vessels relax and also improves circulation.
Carnitine is an amino acid that benefits energy levels by transporting fatty acids into the mitochondria where they can be burned up and used as fuel. For this reason, many take carnitine as a weight loss supplement to help bump up fat burning.
Leucine is very important it is one of the nine essential amino acids and is important for protein synthesis and many metabolic functions. Leucine contributes to the regulation of blood-sugar levels; growth and repair of muscle and bone tissue; growth hormone production; and wound healing. Leucine also prevents the breakdown of muscle proteins after trauma or severe stress
Isoleucine is part of the BCAA group which are significant to human life and are expressly involved in energy, muscle metabolism, and stress. Isoleucine has various physiological functions, such as assisting wound healing, detoxification of nitrogenous wastes, stimulating immune function, and promoting secretion of several hormones. Necessary for hemoglobin formation and regulating blood sugar and energy levels, isoleucine is concentrated in muscle tissues in humans.
Valine is a branched-chain essential amino acid that has stimulant activity. It promotes muscle growth and tissue repair. L-valine is an essential amino acid, meaning that it is not able to be biosynthesized in the human body. It must, therefore, be obtained through dietary sources.