L-Isoleucine is an essential alpha-amino acid that is considered both, a ketogenic and a glucogenic amino acid. Since that L-Isoleucine is an essential amino acid, it cannot be synthesized by the body, therefore it needs to be ingested. The primary source of L-Isoleucine is as a component of proteins. It has become a prominent component of nutritional supplements, mostly with the body building and similar athletic communities, where it is believed that L-Isoleucine has the capability to increase endurance, but also to repair muscle tissue. It has been observed that L-Isoleucine ingestion allows power athletes to recover easier from very tough trainings and exhausting activities. This branched chain amino acid is one of the three main BCAA in the body, the other ones being valine and leucine.

L-Leucine, is an alpha amino acid which is extremely essential in the everyday functioning of the body. Leucine is also an essential amino acid, meaning that the human body cannot synthesize it and it has to be ingested. And is found in brown rice, nuts and whole wheat bread products. L-Leucine as an essential amino acid increases the synthesis of muscle protein and thus slows the degradation of muscle tissue. L-Leucine is also utilised in the liver, adipose tissue and muscle tissue. Simply put, L-Leucine supplies the body with energy when engaging in an athletic activity, it preserves the glucose stored in muscle tissue and it works to heal bone, skin and muscle tissue. It is also a ‘limiting nutrient’ thus it helps the body make use of the proteins ingested. Leucine deficiency can lead to depression, muscle weakness, low energy etc.

L-Valine is an amino acid in combination with L-Leucine and L-Isoleucine. These amino acids maintain everyday life and offer maximum support. L-Valine is acquired from vegetable and animal protein. L-Valine regulates the immune system and is involved in the protein synthesis and glucose metabolism. L-Valine is effective in muscle growth as well as tissue repair. L-Valine is a part of the muscle metabolism and is also effective in the nitrogen balance in the body. L-Valine is found in the muscles in high concentration, but this cannot be done on its own in the body and has to be acquired through dietary or food supplements. L-Valine has stimulating effect and maintains the nitrogen in the body. It is effective for repair as well as growth of tissues and for muscle metabolism. Adhering to the label directions is highly recommended. This is normally safe and has no side effect until now. However, for the dietary supplement consulting the physician before use is the best.