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.

Green Tea Extract is of immense use to treat body ache, headaches and poor digestion. The green tea extract contains polyphenols to high levels and is an opulent source of antioxidant. It has the power of fighting free radicals more than vitamin E. the polyphenols present in green tea extract protect against respiratory and digestive infections. It blocks the carcinogens actions that promotes cancer and reduces the cholesterol levels. Green tea extract helps in metabolizing fat. The dieters can feel the weight loss without side effects and jitters. The green tea extract decreases the heart disease risk and also helps in preventing liver failure. The benefits of green tea extract are many, but as it contains caffeine, medical experts should be consulted prior to using it. Green tea extract also defends dental plaque. Green tea extracts prevents even liver transplant failure, but pregnant women should take green tea only after doctor consultation.

Hoodia Gordonii is a water retaining plant, also known as a succulent, which grows without leafs. Being native to the south of Africa, it has been in use for an indeterminable amount of time as an appetite suppressant. It is very easily identifiable, because the flowers of this plant have a rotten meat odor. The ingredient of the plant which is responsible for the appetite suppressing effects has been named P57. It is a steroidal glycoside which seems to act directly to the central nervous system’s mechanisms and supposedly raises the content of adenosine triphosphate in brain by at least a half. The effects of P57 in trials were registered as capable to reduce food intake by some fifty per cent on a daily basis.

Some Unknown Ingredients, which is a common practice for many supplement manufacturers. They use ineffective common ingredients and trademark their name for them to disguse the actual low quality ingredient contained.