Precision Tribulus Stack Details Hi-Potency Tribulus Formula with complementary support nutrients. Increases total free testosterone Suppresses estrogen production and prevents aromatization Reduces DHT production to prevent acne, hair loss, gynecomastia and other testosterone related side effects Improves strength & stamina Stack with D-Aspartic Acid for even better results Tribulus, Nettle Leaf, and Fenugreek Extract – This unique combination of proven ingredients will naturally stimulate your body’s testosterone production, in order to maximize your gains and increase your strength and stamina. Red Ginseng – Assists in recovery from exercise (or any other stress), increases energy levels and improves mood. Avena Sativa – Works to free up bound testosterone that’s stuck to other compounds in your body, rather than just increasing overall testosterone levels. It essentially makes available testosterone more efficient. Chrysin – supports the suppression of estrogen production and the prevention of testosterone converting into estrogen. Chrysin helps to fight aromatization – the subsequent production of estrogen after a rise in testosterone.