Orthomolecular Medicine can use amino acid therapy for treating Erectile Dysfunction (ED). The amino acid found to work very well is arginine. This amino acid is used in doses up to 1500 mg per day for this purpose and must be taken on a long term basis. It increases available nitric oxide. This amino acid also is a mild chelator and helps those with cardiac issues. This is a preferable for men suffering from ED and cardiac problems to manage their problems. Viagra can raise blood pressure in men with cardiac issues. This will not work for everyone. More information can be found on ED at http://**********************.com. There are Chinese Patent formulas and single herbs that can also help ED. This amino acid can help improve low libido. More information will be given in the future about herbal solutions for this problem.