TRIBULUS terrestris, Tribulus Goldtm, the original Bulgarian whole-herb, is >45% steroidal saponins, increases LH & free testosterone up to 30% in males and FSH in females. Studied extensively for sexual functioning and strength and muscle building by the Bulgarians, it does not increase testicular tissue, yet it is reported to increase sperm functioning, the duration of erections, and intensity of orgasms in both normal and sexually dysfunctional males. In women it has helped symptoms of PMS and menopause. Other studies showed lower blood pressure, cholesterol, & other cardiovascular benefits, improved kidney function, antiinflammatory activity, and increased libido in both sexes. For building muscle, stack with anabolics or androstenes.