Caffeine is a stimulant that is used to stay awake and it gives mental alertness from fatigue. This is used as an adjunct for pain relief and also as energy accelerates. Caffeine is a non-prescription drug easily available as over the counter medication and comes in combination to acquire relief from headache and pain. Caffeine increases the mental alertness by offering the required energy for exercise training and weight loss. Caffeine cannot be considered as a mere stimulant as it reaches deep into muscles and provides power that is long lasting. Caffeine taken before any work out is also great as it fights the fatigue and keeps the person ready for the workout. Dieters also find caffeine as the solution as they feel sluggish. This is a no-calorie stimulant and does its job effectively and quickly. Caffeine anhydrous is found even in one or two coffee cups. However, this limitation is recommended as excess caffeine may result in irritability, rapid heart beat, nervousness and sleeplessness.

Epicatechin Gallate is a type of flavonoid normally extracted from green tea and buckwheat. It is a flavan-3-ol with chemical formula C22H18O10 and Mol. Mass 442.37 g/mol. Research shows that Catechins including Epicatechin gallate have anti-inflammatory, antioxidant and free radical scavenging properties. Its effects are being studied on scar formation which showed a significant increase in blood vessel formation, inducible nitric oxide synthase and cyclooxygenase-2.. It also indicated a decrease in arginase-I activity and protein levels, which improved scars. The wound healing properties of Epicatechin gallate are also being studied on rats; preliminary research shows encouraging results.

Epichtechin

Epigallocatechin or gallocatechol is a flavanol which are a class of flavanoids. Its basic structure is composed of the 2-phenyl-3, 4-dihydro-2H-chromen-3-ol skeleton. This chemical occurs naturally and is found in green tea and fruits like the pomegranate and persimmon. It is an antioxidant. The chemical interacts with the cannabinoid receptors at a moderate level. These receptors have important implications in human physiology. This means that their activation generates health benefits. Flavanols also act to protect against sunburns, increase capillary blood flow, decrease blood pressure and keep the walls of the arteries in a relaxed condition. The chemical may also act as a building block for other important chemical compounds like proanthocyanidins.

Epigallocatechin Gallate (EGCG), which is also known under the name epigallocatechin 3-gallate, is the ester of catechin, gallic acid and epigallocatechin. It is found in tea and is believed to be one of the most important antioxidants today. Epigallocatechin 3-gallate is currently investigated for the inhibitory effects on the life cycle of HIV-1 virus, the human immunodeficiency virus type 1, which causes AIDS. Although EGCG has shown significant benefits in laboratory studies, the clinical trials on humans have not been conducted yet. The antioxidant qualities of EGCG and the associated reduction of free radicals have made epigallocatechin 3-gallate a very popular supplement, especially with the body building and athletic communities. It is furthermore suggested that EGCG has therapeutic potential with several forms of cancer and in setting of liver fibrosis.

Green Tea Extract increases energy expenditure and affects fat oxidation, which therefore promotes weight loss by increasing the body's metabolism.