Bioperine, a standardized extract from the fruit of Piper nigrum L (black pepper) or Piper longum L (long pepper). It contains 95 percent of piperine. Bioperine is used in conjunction with other herbs or vitamins to increase their absorption and digestion to make them more effective.

Evodiamine, an alkaloid extract from the Evodiae Fructus plant is known as Evodiamine. It has been referred to as a “hot nature” herb in Chinese literature and medicine. Based on animal studies, Evodiamine increases the natural fat burning rate and stimulates vanilloids for reduction of fat intake. It increases body temperature, influences the adrenal glands to secrete catecholamines and also affects the metabolism of certain drugs. Since it acts like a thermogenic and increases the overall temperature, more fat and calories are burnt due to its intake. This alkaloidal compound has anti obesity effects due to UCP1 (uncoupling protein 1) thermogenesis. In part, evodiamine can prevent diet induced obesity from developing further. It is available in the form of supplement or through Evodiae Fructus plant.

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.

Guarana is a climbing plant of the Sapindaceae family native to the Amazon basin. Guarana is best known for its fruit and seeds. Guarana extracts contain naturally high amounts of caffeine which the plant uses in defense against pathogens. Its extracts are a natural and abundant source of caffeine in most parts of the world. It is added to soft drinks, herbal tea, energy shots and used in capsules. The extracts have a positive effect on cognition and they also increase memory retention and physical endurance. A 2007 study on human pilots showed its positive effects on memory, alertness and mood. It is also reported to have antioxidant and antibacterial effects.

Hoodia Gordonii, which although popular, has no published randomized controlled trials in humans to show hoodia is safe or effective in pill form. One study published in the September 2004 issue of Brain Research found that injections of p57 (The Active ingredient in Raw, Fresh Cut Hoodia, not dried) into the appetite center of rat brains resulted in altered levels of ATP, an energy molecule that may affect hunger. The animals receiving the P57 injections also ate less than rats that received placebo injections. However, this was an animal study and INJECTIONS IN THE BRAIN are very different from oral consumption, so it cannot be used to show that oral hoodia can suppress appetite in humans. Hoodia Gordonii is a succulent (a cactus of the aloe family) found in the Kalahari desert of South Africa. Most Hoodia Gordonii products contain very little, if any of the active ingredient needed to suppress hunger. Real Hoodia is very rare and is even an endangered plant. Most importantly, Hoodia has only demonstrated any effect in fresh, raw pieces of the plant. The effectiveness of powdered Hoodia has yet to be shown and may actually increase hunger. It's main use is as a cheap alternative to the more expensive weight loss herbs, which are the only alternative left after the banning of ephedra. Most supplement manufacturers can not use the more expensive weight loss herbs because it will result in a product that would be too expensive to compete with other more popular inexpensive diet supplements.