Eurycoma Longifolia is also known as tongkat ali or pasak bumi. It is a plant in the family Simaroubaceae and genus Eurycoma, native to Indonesia and Malaysia. It was used in folk medicine for its antimalarial, antipyretic, antiulcer, cytotoxic and aphrodisiac properties. Eurycoma longifolia is used in supplements for bodybuilders because research claims that it can increase testosterone level but most of the research was conducted on rats and further scientific evidence is needed to confirm its effect on testosterone levels in humans. Some studies also show that it induces apoptosis in breast-cancer cells and is cytotoxic to lung-cancer cells.

Tribulus Terrestris is derived from a vine plant that grows on tropical climates. The plant may be found in the countries of China, India, Mexico and Eastern Europe. It has many medicinal properties. It is traditionally used by the Chinese for it ability to treat headaches, dizziness, clam the liver and improve sexual problems. It contains phytosterols, saponins, glycosides, and spirostanol. Tribulus Extract stimulates the production and secretion of testosterone that plays an important part in muscle formation and development. It also helps improve the libido and prevents impotence. It enhances the mood and energy level. Tribulus Extract also aids in lowering the blood cholesterol level.

Vitex agnus-castus is commonly called vitex. It is also known by its other names such as chaste tree, chasteberry or monk’s pepper. It is plant which is native to the Mediterranean region. Since it has aromatic foliage and flowers, it is cultivated in warm and subtropical regions. In Africa, vitex is a traditional but little known plant. It boosts of food security and also has the potential of improving nutrition. It is also used for foster rural development and it also supports sustainable land care. During pregnancy, the usage of vitex agnus-castus might increase the chance of complications. Therefore, it should be avoided during pregnancy. As it have effects on the testosterone levels, male body builder’s use vitex agnus-castus as a supplement but only as a secondary component.