Caffeine may be the most popular legal addictive stimulant that is available to mankind. Besides coffee, tea, guarana and kola nut have excess amount of this xanthine alkaloid, which is actually acting as a psychoactive drug. In several plants, caffeine is an effective insect repellant, but this trimethylxanthine is deemed by the Food and Drug Administration as generally safe food substance. It is an antagonist of adenosine receptors. The effect of caffeine is individual and may more or less increase the ability to perform physical and mental labor. It reduces the effects of fatigue and may in long term help predominantly men reduce the risk of developing Parkinson’s disease. It has also been observed that caffeine has nootropic effects, furthermore, regular consumption of caffeine may significantly reduce the risk of heart diseases.

L-Arginine AKG is a salt of amino acid arginine and alpha-ketoglutaric acid, and is widely used as a body building supplement. Its components assist in the metabolism of nitric oxides. Arginine and alpha-ketoglutarate are forerunners of polyamines and nitric oxide, which take part in a number of metabolic functions. Its supplements enhance growth hormone and insulin secretion with anabolic effects in postoperative patients. Their intermediary metabolites, glutamine and proline, can also help promote recovery from trauma. In animal studies, it increased the levels of glutamine and arginine in skeletal muscles and stimulated the immune system function as compared to animals which did not receive it. It can also improve host-defense mechanisms, especially during injury and acute stress.

L-Glutamine is an amino acid that occurs most abundantly in the body by being released from muscles under stress. Aside from increasing the immune system’s efficiency to fight diseases, it also takes care of the normal functioning of the brain and the digestive system through the removal of excess ammonia in the body. A number of factors, such as stress, infections, injuries and surgery affect the levels of glutamine in the system, showing that the healing process is under way. Glutamine supplements may be used by regular exercisers to help in the recovery of muscular fitness after a workout. Glutamine, however, is known to be linked with infections of the intestine and users are advised to seek advice from professionals before ingesting this amino acid.

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-Ornithine is an amino acid that is commonly used in various nutritional supplements. It aids the metabolism and promotes the excretion of growth hormones. It helps develop lean muscles and burns body fat. It also boosts the immune system function and protects the body from acquiring illness caused by infections. It also aids in detoxifying the body from toxins that may cause serious diseases. L-Ornithine promotes the development of muscles and prevents catabolic activity. It benefits the elderly because it prevents muscle degeneration. It helps burn fats for energy supply and promotes formation of muscles. It also helps in regulating blood sugar and blood cholesterol level.

L-Ornithine Alpha-Ketoglutarate is a combination of two amino acids, namely: ornithine and glutamine. They are considered “conditionally essential” because the body can produce these two amino acids by it self. L-Ornithine Alpha-Ketoglutarate has both anabolic and anti-catabolic effects. L-Ornithine Alpha-Ketoglutarate’s anabolic property stimulates the body to build muscles and other tissues; the anti-catabolic property, on the other hand, blocks the effects of hormones that cause the muscles and other tissues in the body to break down. L-Ornithine Alpha-Ketoglutarate increases the energy level, endurance and muscle mass as it slows down the fatigue and the build up of unwanted fats. It also speeds up the recovery and healing of muscle.

L-Taurine , a semi-essential amino acid found in the heart muscle, central nervous system, white blood cells, and skeletal muscle, may not be as popular as other types of aminos such as glutamine, but is extremely crucial. It is also vital for metabolism. While taurine is made in adults’ bodies, newborns cannot make it. If the body fails to produce it in sufficient quantities, it is possible to correct this deficiency by using L-Taurine supplements. You are likely to get enough taurine if you are a meat eater since it is found in abundance in eggs, meats, fish proteins, and dairy products. Generally, vegetarians and women of all ages are at a greater risk of developing a L-Taurine deficiency. It is possible to treat depression, low sperm count, low sperm motility, high blood pressure, and cirrhosis using this supplement.

NADH or nicotinamide adenine dinucleotide hydrogen is a double nucleotide and is the reduced form of NAD. It acts as an electron carrier in the body. Chemically it is composed of two nucleotides adenine and nicotinamide joined through their phosphate groups.

Vitamin B3, also called Niacin, is a water-soluble vitamin needed for the conversion of food into energy so that it may be used by the body. Vitamin B3 also helps metabolize protein, sugar and fat.

Yohimbe- Basically a tree bark, Yohimbe is rich in pharmacologically active chemicals. It is commonly found in products developed for body building and enhancing male performance. The use of Yohimbe causes serious side effects too that include renal failure, seizures and in very rare cases, even death. Individuals suffering from low blood pressure, heart disease, liver or kidney disease, and diabetes should refrain from using any kind of Yohimbe supplements. Taking larger doses of Yohimbe can cause weakness, stomach disorders, fatigue, and nervous stimulation followed by paralysis. It is therefore important to avoid self-medication. Sometimes, side effects may arise even if small amounts of this supplement are taken, especially for prolonged periods. If you are already taking drugs for treating some health condition, it is best to avoid this supplement.