7-Keto is a metabolite of the hormone dehydroepiandrosterone (DHEA). As the body grows older, this natural substance is produced in a less amount, causing the metabolism to slow down. With the help of 7-Keto supplement you cannot only lose weight without any stimulant but also replace the nutrients your body has lost over time. People with a low level of DHEA also have a low level of 7-Keto. As compared to exercise and dieting, this supplement can help you shed three times more weight without insomnia or jitters and therefor is used in Lean System 7. Generally, 100mg of 7-Keto on a daily basis has been recommended for weight loss. This compound is used in several weight loss pills and dietary supplements to increase thermogenesis and help the user burn off unwanted calories.

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.

Citrus Aurantium, More commonly called "bitter orange", which is taken from unripe oranges. Research shows that citrus aurantium can increase the metabolic rate without affecting heart rate or blood pressure, breaks down fat, burns calories and may act as an appetite suppressant.

Coleus Forskohlii or otherwise known as Plectranthus barbatus and Indian Coleus is a perennial plant native to tropical regions of Asia and Africa. In Kenya the leaves of the plant have been traditionally used as toilet paper. Ayurvedic medicine lists the coleus species as treatment for various ailments of the urinary tract, spasmodic pain and even heart disease. In the extract of the C. forskohlii is the compound forskolin, which has found wide usage in body building and weight loss circles. It is supposed to increase thyroid hormone production, increasing the metabolic rate. Further data suggests that forskolin may also be responsible in increasing cAMP levels and associated metabolic activities, such as stabilization of insulin levels, relaxation of smooth muscles and promotion of thyroid functions.

Dandelion contains over two dozen other nutrients but primarily contain large concentrations of vitamins A, C, and K as well as calcium, potassium, iron and magnesium.

Guarana- The active constituent of guarana is caffeine, which means that it should not be used alongside ephedrine as either a dietary aid or in order to stimulate performance. The American Food and Drug Administration has not tested its effectiveness or its purity as they do not class it as a drug. Guarana has many other names including Brazilian cocoa and may be a constituent of non alcoholic drinks imported from South America. Because of possible adverse reactions it is not recommended for anyone with a heart condition or who has kidney disease, high blood pressure or who suffers from anxiety.

Yerba Matte, actually yerba maté, as it is called in Brazil, or Ilex paraguariensis in Latin, is a small tree or a shrub which can grow to fifteen meters. It is found naturally in South America, mainly in south of Brazil, Argentina, Paraguay, Uruguay and Chile. Foliage is evergreen, and the flowers are rather small, additionally there is a smallish fruit of red color. A tea like brewing in warm water, not boiling, is a popular drink in the native area, similar social gathering is common, akin to tea time practice in the United Kingdom. Yerba matte has several xanthines alkaloids which are related to caffeine, but although chemically identical to caffeine the mate xanthine cocktail provides different results, for instance it relaxes smooth muscle tissue and stimulates heart tissue. Yerba Matte is a potent ingredient in Lean System 7.