Promotes Healthy Testosterone Levels GAT Tribulus Terrestris is a natural source supplement used for supporting male vitality and lean muscle development to help you reach your fitness goals.* Tribulus can also help support athletic performance levels.* Other Ingredients: Hypromellose (vegetable capsule), Rice Flour, Magnesium Stearate. Size: 90 Capsules Suggested Use:  As a dietary supplement take one (1) capsule two times daily, preferably with a meal. Supplement Facts