NOW TestoJack 300 is an extra strength combination of natural herbal ingredients known to support a man's healthy sexual activity and overall vitality. With Tongkat Ali, Tribulus, Maca and Horny Goat Weed, TestoJack 300 is a targeted botanical formula that a man can use to maintain reproductive function, libido, and sexual performance. The addition of American and Panax Ginseng plus Muira Puama round out this formula through their ability to support sustained energy levels. This combination helps to create a dynamic one-two punch for the overall promotion of reproductive health and sexual drive.