L-Isoleucine- The second of three branched chain amino acids it is important in blood sugar regulation and producing hemoglobin. After exercise, it is responsible for muscle recovery and important in the metabolism to produce energy.

L-Leucine- Leucine is a hydrophobic essential alpha amino acid, which as an additive under the name L-Leucine has an E number E641, which classifies this amino acid as a flavor enhancer. The natural source of leucine includes whole wheat products, several species of nuts and brown rice. L-Leucine is one of the most abundant amino acids found in skeletal muscle tissues. L-Leucine became in recent times a very popular dietary supplement, particularly with the body building communities, because of the evidence that it slows down the degradation of muscle tissue in rats by elevating the production of muscle proteins. There are additional claims in circulation, which state that L-Leucine also controls the nitrogen balance and aids to the mental and cognitive abilities during high power workouts.

L-Lysine- Lysine is an essential alpha amino acid that needs to be ingested and cannot be synthesized by the human body. Sources of L-Lysine include meat, particularly red meat, lamb, poultry and pork, but also cheeses, like parmesan, some fish like cod and sardines and eggs. Several plants are rich in L-Lysine, soybean, lentil, spinach and buckwheat, but also buffalo gourd, watercress, locust bean and many other bean variants, including the common bean. L-Lysine is deemed vital for the overall production of protein, as a structural building block. It seems that L-Lysine also plays a prominent part in the absorption of calcium. Further properties include playing a role in the production of enzymes, hormones and antibodies, but also in the recovery from sports injuries and surgeries.

L-Methionine- Methionine is a nonpolar essential alpha amino acid containing sulfur; one of only two proteinogenic amino acids besides cysteine. Methionine is vital to several biosynthesis processes of phospholipids as an intermediate, the prominent list includes taurine, lecithin, carnitine, phosphatidylcholine and cysteine, just to name a few. This water soluble antioxidant assists in the lipid breakdown and works against free radicals. Just like many such amino acids, it can be obtained through ingestion of dietary proteins, such as meat, eggs, cheese, fish and poultry, but some levels are also available from spinach, sesame seeds and Brazil nuts. It has been found that an inadequate conversion of methionine may cause atherosclerosis. This glycogenic amino acid is also part of other biochemical reactions, like the creation of S-adenosylmethionine, which in turn is a part of the synthesis of epinephrine, melatonin and creatine, among others.

L-Phenylalanine- The human body needs L-Phenylalanine for survival as it is an essential amino acid. It is found in food items that are rich in protein such as eggs, meat, dairy products, beans and fish. Since the body cannot produce L-Phenylalanine from other chemicals, you need to increase the intake of protein for fulfilling the nutritional needs. L-Phenylalanine is one of the chemical forms of Phenylalanine, an amino acid. It helps in building up of several proteins produced by human body. L-Phenylalanine supplements act as an appetite suppressant as it initiates the release of cholecystokinin, an intestinal hormone. Once this hormone enters the stomach, it signals your brain that you are not hungry anymore. According to experts, you should not take more than 500-1000 mg of L-Phenylalanine per day.

L-Threonine- 2-amino-3-hydroxybutanoic acid, or L-Threonine, an enantiomer of Threonine, which is an essential amino acid, needs to be ingested by way of diet, predominantly through Threonine containing proteins. There are two ways how Threonine can be metabolized, namely conversion into pyruvate by utilizing Threonine dehydrogenase, whereby an intermediate can thiolyze with CoA, producing acetyl-CoA and glycine; and the second possibility, where Threonine is changed into alpha-ketobutyrate, utilizing serine dehydratase, towards becoming succinyl-CoA. Succinyl CoA is a CAC intermediate, which means that it is a part of the citric acid cycle. The citric acid cycle is a vital part of the metabolic pathway which is securing the conversion of carbohydrates, proteins and fats towards usable energy. Foods containing Threonine are meat, poultry and fish and related products, cottage cheese, sesame seeds and lentils.

L-Tryptophan is the L-stereoisomer of the essential amino acid tryptophan. All amino acids consist of a basic structure which is different only in their special groups called functional groups. The amino acid tryptophan has an indole functional group. Tryptophan is an essential amino acid. This means that it must be ingested from an outside source. An example of a food item rich in this amino acid is banana. Basically, all amino acids are important for the body because they are the building blocks of proteins. Amino acids also possess some special features which vary according to the type of amino acid. Tryptophan also serves as a biochemical precursor of various substances in various reactions. It is a precursor of the neurotransmitter serotonin which is involved in regulating mood and gut movements. It can also act as a precursor of niacin.

L-Valine- L-Valine is one the three Branched Chain Amino Acids (BCAAs). The other two BCAAs are L-isoleuine and L-leucine. L-Valine is required by the body for the proper function of the nervous system and the brain. L-Valine is not processed by the liver; instead, it goes directly to the muscles. It helps enhance muscle growth and help it to recover faster after an intense workout. It also helps in muscle tissue repair and maintains the proper amount of nitrogen in the body. It can also be used as an energy source that gives energy and strength to the muscles. L-Valine has other benefits; it is also helpful in liver regeneration, improvement of insomnia and nervousness, and is an effective appetite suppressant.

Vitamin E, an anti-oxidant nutrient, neutralizes free radicals in the human body to prevent cell damage. This fat-soluble vitamin not only aids the formation of red blood cells but also helps in the absorption of vitamins A, C and K. It is also very helpful to fight various ailments. Since the human body cannot produce vitamin E on its own; it has to be incorporated in our daily diet. This can be done either by consuming foods that are rich in vitamin E or by taking vitamin E supplements. The RDA for adult males is 10 mg. while 8 mg. is the daily requirement for adult females. Expecting and nursing women should compulsorily take 10 mg. of vitamin E supplements. Vitamin E supplements are most effective when consumed with food.