PreLONG is a supplement specifically formulated by Judson Brandeis MD, Board-Certified Urologist and MaleRejuvenation Medicine expert, to treat Premature Climax (PE). It is enhanced by the Natural Superpowers of St. John's Wort. It is a natural ingredient PE is an issue that affects one in four men. St John's Wort has been shown to improve PE with minimal side effects. L-Citrulline has been demonstrated to improve blood flow to the penis. The combination results in better and longer-lasting firmness! WARNING: Please consult your physician before taking this product. Check out our Vimeo for more information about the science behind our products.