Here are details of the scientific studies we have referred to in the How it works page. You can click on each link to read about it. The articles are written by researchers and are highly technical, but you should get the idea.
Steels E, Rao A, Vitetta L. Physiological Aspects of Male Libido Enhanced by Standardized Trigonella foenum-graecum Extract and Mineral Formulation. Phytother Res. (2011)
Topo E, Soricelli A, D’Aniello A, Ronsini S, and D’Aniello G. The role and molecular mechanism of D-aspartic acid in the release and synthesis of LH and testosterone in humans and rats. Reprod Biol Endocrinol. 2009; 7: 120.
Bucci, LR (2000) Selected herbals and human exercise performance. American Journal of Clinical Nutrition. 72(supplement):624S-636S
Singh S, Nair V, and Gupta Y K. Evaluation of the aphrodisiac activity of Tribulus terrestris Linn. in sexually sluggish male albino rats. J Pharmacol Pharmacother. 2012 Jan-Mar; 3(1): 43–47. doi: 10.4103/0976-500X.92512