answer:”Unless the problem is psychological, the inability to achieve or maintain an erection is due to insufficient blood supply to the penis, not a lack of sexual arousal. Herbs such as ginger may help. However, since impotence may signal a more serious disorder, including cardiovascular disease or diabetes, check with your doctor before pursuing self-treatment.”Source Ginger tea, made from real ginger root, will make you feel a little zippier but will not get at your root cause.