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.

Glutamine is naturally created by the human body. Glutamine, a non-essential amino acid can also be found in high protein foods like red meat and nuts. Glutamine is used for proper mental function, maintaining muscle mass and controlling blood sugar levels.

Histidine is among the 20 standard amino acids that exist in proteins. Nutritionally, it is considered an essential amino acid in infants. After growing up, humans start to synthesize histidine and thus it turns into a non-essential amino acid. Different histidine compounds, such as anserine, carnosine, and ergothionine, are found in blood and tissues. Key sources of histidine include dairy, poultry, meat, and fish, besides wheat, rice and rye. Histidine is required for growth, tissue repair, and maintenance of myelin sheaths that protect nerve cells. It is also needed for synthesis of red and white blood cells, and assists in protecting the body from damage rendered by radiation. It helps remove heavy metals from the body. It also helps produce gastric juices in the stomach. Histidine can help with sexual arousal, functioning and enjoyment.

Hydroxyproline is a non-essential amino acid and it does not acquire directly through the diet. It means that it is produced from other amino acids present in the liver. It is necessary for the building of the human body's chief structural protein, known as collagen. Defects in the collagen synthesis can lead to internal bleeding, easy bruising, increased threat of blood vessel damage and the breakdown of connective tissues of the tendons and ligaments. Increased fall of hydroxyproline in urine is usually associated with the breakdown of connective tissues and may be a symptom of vitamin C deficiency. Deficiency of hydroxyproline happens only when a deficiency of vitamin C occurs.

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.

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 is an essential amino acid that is sometimes also referred to as amino acid K. It is effective in preventing atherosclerosis which causes the walls of the arteries to harden caused by deposits of lipoproteins or fats. It is able to loosen and preventing the deposits of fats and reduces the risks of stroke and hypertension or high blood pressure. It also promotes the production of carnitine that converts fatty acids into energy. It also controls the blood pressure level. Lysine also helps in the absorption of calcium that keeps the bones healthy. It also promotes collagen production that is important in maintaining the joints and connective tissues healthy.

Methionine is an amino acid that is found in meat, fish, beans, eggs, lentils, onions and seeds. It contains sulphur that is essential for the production of glutathione. It helps the body get rid of toxins, build strong and healthy tissues, and promote a healthy cardiovascular system. It helps breakdown fats and promotes weight loss. It also prevents the build up of fats in the arteries that reduce the risk of arteriosclerosis. Methionine promotes proper digestion and gets rid of toxins and heavy metals in the body. It helps cleanse the body from toxins. It also helps relieve pains caused by arthritis. It helps in alleviating the mood, and treat depression.

Phenylalanine has also been used in the treatment of attention deficit disorder, fatigue and premenstrual syndrome. Phenylalanine also acts as an analgesic and appetite suppressant by releasing an intestinal hormone that signals the brain to feel full after eating.

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 is an essential amino acid found in turkey, chocolates, milk, cheese, fish, banana, and oats. It is converted by the body into serotonin which plays an important role in the controlling the mood, appetite, sleep and impulses. It is also used as a treatment for attention deficit hyperactivity disorder (ADHS), smoking, teeth grinding, and anxiety. It is also effective in alleviated premenstrual syndrome (PMS) such as mood swings, nausea, and pains. It also improves athletic performances by increasing energy, and endurance. It also helps reduce weight by stimulating the metabolism. Tryptophan increases the production of growth hormones. It also plays an important role in the production of niacin or vitamin B3.

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.