L-Glutamine- Glutamine is an amino acid which is responsible for a multitude of biochemical functions in humans. L-Glutamine is generally found in dietary sources such as chicken, beef, eggs, milk and dairy products, fish, spinach, wheat, parsley, cabbages, beans and beets. Glutamine is apparently the most common amino acid occurring naturally, furthermore this non essential amino acid is one of just a few, which are able to directly cross the blood brain barrier. In the human body, L-Glutamine is found in the skeletal muscles, but also in the blood. Besides the vital biological functions, such as fuel for brain, blocking cortisol induced protein catabolism, immune function assistance, protein synthesis and in DNA synthesis, L-Glutamine is used as a supplement for ailing and injured, improving recovery, but also as muscle growth agent in body building and athletic circles.

L-Isoleucine is one of the amino acids besides the other two, L-Valine and L-Leucine. These are found in all the forms of life as proteins. They are as well obtainable in the diet through vegetable and animal sources. L-Isoleucine is good to regulated blood sugar as well the energy levels. It is also important in the synthesis of hemoglobulin and thereby increases endurance. L-Isolecuine gets metabolized in the tissues of the muscles and the opulent L-Isolecuine sources are almonds, cashews and soy protein. Hence, this is prominent among athletes and is taken in combination with the other two amino acids, L-Leucine and L-Valine. L-Isoleucine is required for the formation of hemoglobin and also regulates as well as stabilizes the energy levels. The other food sources of L-Isoleucine are eggs, meat, fish, rye, chickpeas, chicken, liver and lentils. People suffering from physical and mental disorders are usually deficient in L-Isoleucine. These amino acids are required for the synthesis of enzymes, structural protein and for hormones.

L-Leucine- Leucine is an essential amino acid that does not synthesize in humans and so must be ingested. It slows the degradation of muscle tissue and is used in the formation of sterols.

L-Valine is an essential alpha amino acid and one of the three essential branched chain amino acids found in the human body. The other two essential BCAAs are leucine and isoleucine. The name is derived from the plant valerian. Valine is also classified as nonpolar and is known by sickle cell disease sufferers as the substitute amino acid for the glutamic acid, whereby the hydrophobic qualities of valine cause the hemoglobin to not fold correctly. Just like the other three BCAAs, the primary source of valine is through ingestion of proteins, where valine is a component; some such sources would be fish, peanuts, poultry, cottage cheese, lentils and sesame seeds. L-Valine is found in large quantities in muscles, whereby in the muscle metabolism it is essential for the restoration and tissue growth.