Male Performance Formula With Epimedium, Muira Puama and Tribulus A Dietary Supplement Vegetarian/Vegan Botanicals/Herbs Family Owned Since 1968 GMP Quality AssuredNOW Men's Virility Power is an herbal formula specifically designed to support a man's modern, active lifestyle. This unique formula features Epimedium, also known as Horny Goat Weed, plus other popular herbal ingredients like Muira Puama, Maca and Tribulus. This blend may enhance sexual performance.