Standardized Extract Minimum 45 % Saponins Non-GMO A Dietary Supplement Vegetarian/Vegan GMP Quality Assured Kosher Tribulus terrestris has been used for centuries in ancient Greece, India and Africa to enhance vitality and virility. Recent research indicates that Tribulus can support the body's free radical defense systems and preliminary studies suggest that Tribulus may help to promote healthy endocrine function and male reproductive health.