Laboratory evidence shows that Eurycoma peptides stimulate release of free testosterone from its binding proteins and improve overall hormone profiles. Also added with Panax ginseng which has many history as perennial herb. According to traditional Chinese medicine, each type of ginseng is thought to have unique healing properties. For example, some types of Panax ginseng have "warming" properties thought to aid circulation. According to a comprehensive data review of six randomized trials that occurred over 15 years, Panax ginseng may be an effective and safe treatment for erectile dysfunction.4 A 2011 review of alternative medicines for sexual function arrived at a similar conclusion, finding Panax ginseng the only dietary supplement to improve erectile function with no safety issues.