Citrus Aurantium is the Latin name for a citrus tree which grows bitter oranges. Traditionally being used by Chinese medicine and herbologists, the extract of the orange and the peel was used as a dietary supplement in concoctions with other herbs to suppress appetite. While other active ingredients of the citrus aurantium may contribute and even promote the effect, the main ingredient used in all weight loss products is synephrine, an alkaloid similar to ephedrine. It is a phenethylamine; it influences the alpha1 adrenergic receptor, constricting blood vessels, additionally increasing the heart rate and the blood pressure. In most cases the use of synephrine is paired with a diet and body building plan, where weight loss and muscle building is essential.

Coleus Forskohlii, contains forskolin, a labdane diterpene which boosts cAMP. Forskolin performs a variety of cellular functions like inhibiting release of histamine, stimulating the thyroids as well as burning fat. The plant belongs to the Lamiaceae family and is readily found in the mountainous terrains of Asia. Forskolin, a root extract of the plant Coleus forskohlii also has many clinical uses. It is used to treat ailments like asthma, angina, epilepsy, cardiovascular dilation to name a few. Since the plant is known to promote fat loss, it is also used in various weight loss and body building supplements. Forskolin aids weight loss by controlling the enzyme, responsible for burning fat. Moreover, by increasing the production and release of thyroid hormones, it enhances the body’s metabolism to burn more fat.

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