Caffeine is a stimulant drug used for mental alertness and to accelerate energy and power. It is also used to delay muscle fatigue as it goes deep into the muscle tissues.

Creatine Monohydrate- Creatine is a metabolite generated in the body composing three amino acids: l-arginine ,l-methionine, and l-glycine. About 95% of the Creatine is present in skeletal muscle in the form of free chemically unbound creatine and creatine phosphate. The residual 5% of the creatine is stored in the testes, heart, and brain. The body of an inactive human being metabolizes about 2 grams of creatine a day. Bodybuilders because of their intensive working outs metabolize larger amounts than that. Creatine generally is present in red meats and in some particular types of fish. Creatine has been linked with asthmatic symptoms. One must avoid creatine if they possess allergies to this supplement. Symptoms of allergy may comprise rashes, shortness of breath or itching. Creatine enhances the body's capacity to generate Adenosine Tri phosphate, which is used by muscles for fuel, whenever they contract.

Glucuronolactone is formed in the body by the liver and well known for its supply of energy and provides an increased feeling of well being in the body. It also improves time taken in reaction to different stimuli, improves memory and concentration power and overall grey cell performance. Glucuronolactone is a natural detoxifying agent that helps to get rid of harmful substances from the body by making them water soluble. Being an important component of most connective tissues in animals, Glucuronolactone supplements help in the cure of arthritis. Being a popular ingredient in most energy drinks, Glucuronolactone reduces sleepiness and driving mishaps that are sleep related. Rumors state that Glucuronolactone was initially banned by the US Government.

L-Histidine is one of the amino acids present in proteins. In infants histidine is an essential amino acid and as the age advances it becomes a non-essential amino acid which can be synthesized by the body. L-Histidine is most commonly known as being a precursor to the allergy symptom producing hormone histamine. However histadine does have other roles to play in the body beyond causing allergies. L-Histadine is required by the body to regulate and utilise essential minerals like copper, zinc, iron, manganes etc. L-Histidine is also important in forming metal bearing enzymes like the antioxidant super oxide dismutase, iron storage proein ferritin, red blood cell haemoglobin etc. Depletion of L-Histidine can be recognised by low plasma concentrations of the amino acid, high blood serum levels.

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 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.

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 is a vital amino acid. It acts as a building block for various proteins produced in the body. It is found in most foods that contain protein, like poultry, beef, pork, milk, fish, yogurt, cheese, eggs, soy products, and certain nuts and seeds. It can assist in decreasing chronic pain linked with different health conditions by inducing nerve pathways in the brain which control pain. It can also help improve rigidity and is beneficial in conditions like walking disabilities, depression associated with Parkinson’s disease, and speech difficulties. Combination of L-Phenylalanine with ultraviolet radiation for people having vitiligo, a condition that is characterized by irregular depigmentation or white patches of skin, can lead to some darkening or repigmentation of whitened areas, especially on the face.

L-Threonine optimizes the utilization of animals that you consume in order to deposit protein to the muscles and aides in weight gain.

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.

Taurine is found in high levels in the human heart and skeletal muscles. It is an amino sulfonic acid which is also present in the central nervous system and white blood cells. The human body produces this essential acid naturally so that it helps in absorbing vitamins and digesting fats. This acid reduces the problem of high blood pressure in adults and it is also being used for treating bipolar depression. Popularly known as a health supplement, Taurine has always been used in various health products. Bodybuilders are recommended to take Taurine along with creatine as it can prevent muscle soreness and fatigue. This amino acid is listed as one of the main supplemental ingredients in various energy drinks. For instance, drinks such as Rockstar and Monster, contain approximately 2000 mg of Taurine.