Boditronics Testo Fen XT is a revolutionary new supplement backed by Human Clinical Trials Testofen is a fenugreek extract which has been standardised for the active saponin Fenuside. Fenuside has been shown to raise testosterone levels & boost libido. It is believed that Testofen works by stimulating a number of hormonal responses which, ultimately, leads to an increase in testosterone production. This makes Testofen a great product for anyone who is looking to increase strength & power or those simply looking to increase their muscle mass. Testofen us backed by human clinical studies carried out by Gencor Pacific Inc in California. Boditronics Testo Fen XT is unique in providing the same high level daily dose of Fenugreek extract as used in these studies.