Four capsules contain a 2580 mg proprietary blend of Indonesian Tongaat Ali root extract, Korean Red Ginseng root, Tibullus extract and Maca. Clinical feedback as well as citations from the peer reviewed literature indicates the components of TomKat to be safe and effective for increased immune function, reduction of allergic responses, increased stamina, increased athletic performance, increased growth, and repair of muscle tissue and most importantly, increased sex drive.