Instead of being a testosterone precursor, it leads to the production of the luteinizing hormone (LH). When LH levels are increased, the natural production of testosterone also increases. This is a good supplement for men and women to increase their sex drive. According to Bill Phillips, editor of Muscle Media, "...Tribulus terrestris can significantly "lift" performance in the bedroom." Anyone who wants to increase muscle growth (bodybuilders, athletes, etc.) would be wise to try stacking Tribulus terrestris with DHEA.
Supplement Facts:

Serving Size: 1 Capsule
Servings Per Container: 100

Amount Per Serving:

Tribulus Terrestris: 625mg
(from Bulgarian Tribulus Terrestris)
Standardized at a 25% saponin content.

Directions: As a dietary supplement, take 3 to 5 capsules with 8 oz. water on an empty stomach 30 minutes prior to physical activity.