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.

Chromium is an essential mineral that plays an important role with how the body uses glucose. Chromium may be found in brewer’s yeast, grains, cereal and in some beers. It aids in maintaining the ideal blood sugar level which helps diabetic patients. It also helps in the metabolism and storage of fats, proteins and carbohydrates in the body that may help reduce fats. It helps improve muscle tone by burning the fats. It reduces hunger pangs, suppress cravings and appetite. It is help control the blood cholesterol level. It lowers the risks of cardiovascular problems. It also alleviates depression by stimulating the fatty acid and cholesterol synthesis that is important for brain function.

Citrus Aurantium is a fruit from the citrus family. Although later replaced by the sweet orange in recognition, it has retained many practical uses both in home remedies and in food. Citrus Aurantium boosts up the metabolism, which converts fat deposits into energy. Extensive use may help to control weight and hold back the effects of obesity. It can work as an appetite suppressant to restrain overeating. Citrus Aurantium can help to reduce chest congestion and coughs. Citrus Aurantium is a potent energy booster.

Garcinia Cambogia, native to Southeast Asia, is a tropical fruit which belongs to the citrus family. This Indian and African fruit is extremely popular for its extract hydroxycitric acid. Without suppressing your appetite or stimulating the brain, this acid acts as an effective weight loss supplement. It not only provides the required energy but also improves the signaling system of the body. When the signaling system gets better, the brain is informed by the body that it is full. This system is not very active in obese people, which is why they eat a lot. Garnicia Cambogia extract of hydroxycitric acid is more effectual when used with chromium. The intake of chromium in western countries is very low, due to which people become diabetic or obese.

Guarana Extract is the extract of the guarana plant. It contains a significant amount of guaranine, a substance that is similar to caffeine found in coffee beans. It helps stimulate the adrenal glands and increase the production and release of hormones such as epinephrine, norepinephrine (adrenaline), and dopamine. This helps the metabolism of the body that enhances fat loss, and increases energy and endurance. It helps the body burn the fats to be used for energy. It aids in fighting stress, weakness and fatigue. As a stimulant, it also improves mental alertness, clarity, focus, concentration, and memory retention. Guarana also also improves the libido or sex drive in both men and women. Guarana also contains tannins that help prevent diarrhea and soothes the digestive system.

L-Carnitine - Carnitine is a quat, quaternary ammonium cation, which is derived through biosynthesis of amino acids lysine and methionine. During the breakdown of stored fat in the lipids for purposes of generating additional metabolic energy, carnitine is needed to transport the fatty acids from the intracellular fluid to the mitochondria. The biologically active form of this stereoisomer is named l-carnitine. It is believed that l-carnitine has strong antioxidant effects and that it can strengthen the bone mass during the aging process. It is furthermore believed that l-carnitine promotes the glucose uptake and that it improves the male fertility in clinical trials. Concentrations of carnitine are found in highest levels in red meat and dairy products, but also in some seeds and pulses, as well as cereals and some fruits.

White Willow Bark, which is often used as a natural alternative to aspirin, and is best not to be used by individuals allergic to aspirin. White willow bark extract offers little benefit to weight loss by itself but when used with other dietary supplements, it is thought to work as a thermogenic and help to elevate energy expenditure and promote the metabolsim of fat.