Alanine is a naturally forming chemical found in a variety of foods especially meats. This non essential amino acid is used in the production of protein. It assists the body in metabolizing various components such as glucose and can also play a part in lowering cholesterol. It is suggested that an Alanine supplement be used with people who have a diet low in protein and who may be exposed to adverse effects of a protein deficiency. Alanine is also linked to an increase in the efficacy of the immune system and a reduction of toxins in the system.

Arginine is a non essential amino acid that is naturally occurring. While considered non-essential, it is used by the human body in a number of ways. Overall, it helps improve the immune system by stimulating the thymus gland, boosting white blood cell production and stimulating the release of growth hormone. Arginine helps with wound healing by helping with cell division and is an important part of the urea cycle, helping remove ammonia from the body. Arginine also helps the body with production of nitric oxide which can help reduce mild high blood pressure and help enhance athletic performance.

Aspartic Acid is a non-essential amino acid which is bountiful in plant proteins. It can also be produced in the human body from oxaloacetic acid. Some biochemicals that are synthesized from aspartic acid include asparagine, arginine, lysine, methionine, threonine, isoleucine, and a number of nucleotides. Apartic acid is used for stamina, the brain and overall health as it helps the liver by removing excess harmful ammonia and other toxins from the bloodstream. If ammonia enters your circulatory system it can be harm your central nervous system and cause neural and brain disorders. Aspartic acid helps to keep the mind sharp by increasing concentrations of NADH in the brain.

Cystine is a non-essential sulfur containing amino acid. Our body can supply cystine on its own. Cystine is important for vitamin B6 utilization and is a detoxifying agent. It removes toxins absorbed by body through alcohol and smoking and protects body from damage of brain and liver. Cystine increases the level of glutathione, which is a powerful antioxidant and helps in detoxifying harmful toxins in the liver. As Alpha-keratin, the protein that makes up the skin, fingernails and hair contains cystine; it is also used in anti-aging products. It is also useful for faster healing of burns and wounds, for low count of white blood cells and in skin diseases.

Glutamic Acid is an excitatory neurotransmitter, which enhances firing of neurons in central nervous system. Glutamic acid is a main excitatory neurotransmitter in brain and spinal caord. It is transformed either into glutamine or gamma-aminobutyric acid – the two other amino acids which assist in transmitting messages to brain. Glutamic acid plays a vital role in metabolism of fats and sugars, and assists in transporting potassium into spinal fluid and across the blood-brain barrier. Though it doesn’t cross the blood-brain barrier as readily as is done by glutamine, it is present in blood at high levels and may reach the brain in small amounts. The brain can utilize glutamic acid as a fuel. It assists in correcting personality disorders and is helpful in treating childhood behavioral disorders. It is also used in treating mental retardation, epilepsy, ulcers, muscular dystrophy, and hypoglycemic coma.

Glycine is known to have the ability to stimulate specific brain receptors as well as beneficial for building proteins in the body. It is used as a supplement for many ailments such as strokes or memory loss.

Histidine is an amino acid that is essential especially in infants. The adult body produces this amino acid naturally and thus it becomes a non-essential acid. However in the case of infants this is not true. This vitamin is extremely important and children may not have sufficient Histidine. The Histidine is an originator of the Histamine which is a compound that is release by the human immune system when an allergic reaction takes place. This is also essential for the repair and growth of new tissues and helps to maintain myelin sheaths (the protectors of the nerve cells). Histidine is also needed for the production of the red and white blood cells.

Isoleucine- An important essential amino acid is isoleucine which is also part of the three “branched chain amino acids” along with leucine and valine. Since it is an essential amino acid it cannot be synthesized in the body and thus isoleucine has to be ingested in the diet (almonds, chicken, eggs, cashews, fish, lentils, liver, meat etc.). Isoleucine is required for muscle recovery and also for the formation of haemoglobin. Isoleucine also assists in regulating blood sugar levels and energy levels. It is also involved in blood-clot formation. Isoleucine deficiency is present only in those people who are lacking in protein intake. Deficiency may lead to dizziness, fatigue, depression etc. Excessive amounts of isoleucine doesn’t seem to be a problem though it isn’t recommended for those with kidney or liver disease.

L-Phenylalanine gained notoriety with the aspartame controversy where extensive internet bombardment against the artificial sweetener prompted a thorough cleaning by The Coca Cola Company and other interest groups. Now it seems that aspartame has more benefits to health than aspirin. L-Phenylalanine is an essential alpha amino acid that is deemed analgesic and antidepressant. It is hydrophobic and nonpolar, one of only twenty common amino acids that are used to produce protein as coded by the DNA. L-Phenylalanine can also convert into L-Tyrosine, which can then become L-DOPA, going forth to become norepinephrine, dopamine or epinephrine. Phenylalanine is very often found in foods, protein rich foods like meat, milk and milk products, poultry and fish, but also as already mentioned in the artificial sweetener aspartame.

Leucine is an essential amino acid that works together with isoleucine and valine, forming the three branched chain amino acids (BCAA). Leucine is easily converted by to body to glucose, helping to regulate and maintain the blood sugar level. Leucine promotes muscle recovery, muscle repair and provides the body with energy. It also helps in burning fat that are least responsive to exercise and dieting. Leucine helps in toning the body and the muscles. Leucine prevents muscle loss by breaking down and converting to glucose, this prevents the body from breaking down muscle tissues to create energy, particularly during intense workouts and heavy weight lifting.

Lysine

Methionine is an a-amino acid classified in the non polar group of amino acids. All amino acids have a basic structure in which there is a central carbon atom, attached with the amine, carboxyl, and functional groups as side chains and also a hydrogen atom. Only the functional group varies in different amino acids and the properties, and thus the importance of the amino acids varies according to the functional groups. Methionine has a non polar thioether group as its functional group. Most of the advantages of methionine are based on the fact that the body can convert it into very useful substances. On its own, it is a potent antioxidant and helps in the breakdown of fat. When converted to creatine monohydrate, it helps muscle building.

Milk is a white liquid produced by modified sweat glands of mammals called mammary glands. Milk is very nutritious and its exact components vary from species to species but it contains good amounts of saturated fat, proteins, calcium and vitamin C. Milk contains butterfat globules in water based fluid. Though undoubtedly accepted as an excellent source of nutrients, research has indicated some special health benefits of milk use as well. Consumption of low-fat milk has been found to reduce the risk of contracting high blood pressure, coronary heart disease, colorectal cancer and obesity. Consumption of full fat dairy milk may lead to an increase in fertility in women. Milk contains conjugated linoleic acid which destroys certain types of cancer cells

Proline is an amino acid. The body has the capability to produce Proline with glutamic acid. Proline works well with vitamin C, which make it more potent. It helps particularly in maintaining and repairing damaged tissues, skin and muscle. It heals damaged cartilage, and helps maintaining flexible joints. It benefits parts of the body where collagen is found, such as blood vessels, tendons, skin, bones, and including the eye. It prevents and reduces the sagging, wrinkling and aging of skin. It ensures that the body has the proper supply of collagen, guarding it against future joint and spine problems. It also enhances the immune system.

Serine is a non-essential amino acid derived from amino acid glycine and is beneficial to both mental and physical health.It is vital for proper functioning of brain and central nervous system. Serine helps form phospholipids that are needed to make every cell in the body. It also is helpful in muscle formation and maintaining a strong immune system. Proteins used to form the brain, and the protective myelin sheaths covering nerves, contain serine. It is also required for producing amino acid tryptophan, which is used to make serotonin, a chemical that determines mood. Shortage of serotonin and tryptophan has been associated with depression, confusion, insomnia, and anxiety. Decreased serine levels can lead to chronic fatigue syndrome and fibromyalgia.

Threonine is an essential amino acid that plays an important role in the function of the body. It helps break down uric acid to be used for the production of purines. It helps prevent illness such as gout, and arthritis. It is also important in the synthesis of the amino acid glycine. Threonine also helps balance the blood sugar level in the body by converting glucose in the liver through gluconeogenesis. Threonine also prevents the accumulation of fatty tissues in the liver. It also improves the immune system. Threonine promotes the production and formation of proteins elastin and collagen that have strong antioxidant properties.

Tryptophan-If you have ever felt sleepy or drowsy following a big "turkey" dinner, then you have felt the effects of tryptophan, which is an essential amino acid that is found in foods that contain protein, such as turkey. Tryptophan in supplement form is mainly for those who suffer from insomnia, as an all natural sleep aid. Tryptophan may also be used for mental enhancement and as an appetite suppressant to help achieve weight loss or maintain an ideal body weight. The way that tryptophan works is by converting to serotonin in the body, which is a natural chemical that causes a sleepy feeling.

Tyrosine is a non essential amino acid derived from several sources, including soy, poultry, milk and cheese products, but can also be synthesized in the body from phenylalanine. There are twenty amino acids that are used in human cells to synthesize proteins, one of which is tyrosine. It is of vital importance to the carbon dioxide conversion into organic compounds conducted by plants, the photosynthesis. Tyrosine is also recognized as a precursor to hormones, but also alkaloids and pigments. It is furthermore viewed as a precursor to neurotransmitters; it increases the levels of plasma neurotransmitters, most prominently norepinephrine and dopamine. While under normal circumstances the effects of tyrosine are inconclusive, it has been observed as useful in stress situations and to reduce the effects of a cold, fatigue, sleep deprivation and any kind of prolonged labor.

Valine- One of the several essential amino acids present in the human body is Valine. This is also a nonpolar, branched chain amino acid which is found in high concentrations in the muscles. Since it is an essential amino acid, valine is not synthesised in the body and thus must be ingested as part of the diet. Valine is available through foods like fish, poultry, peanuts, sesame seeds, lentils and cottage cheese. Valine is essential for muscle, growth and repair of tissue and for maintaining the body’s nitrogen balance. Since it has a branched chain, valine can be used as an energy source in the muscles and thus conserves glucose. Hence valine is often used by bodybuilders to support muscle growth and provide energy. A deficiency of valine in the body, caused by the inability of the body to metabolise valine leads to the Maple Syrup Urine Disease in which the person’s urine smells like maple syrup.