Hello dear, Regarding the problem of Erectile dysfunction, it is due to decreased blood supply to the penis. And there are medications that increase blood flow to penis & maintains erection. Performance can be improved by having a diet rich in fruits, vegetables, fish, nuts & honey. Avoid stress...practice meditation..this helps in improving concentration & builds up the confidence level. Avoid smoking & alcohol. You can also do oil massage of the penis...it increases blood flow & maintains the erection. Despite these measures, if you experience difficulty, it will be better to rule out other causes like high blood pressure, blood sugar and other local causes that impair blood flow to the genital organ. One more thing...avoid consuming any over the counter medication which claim to increase the size of penis or improve performance...it may be harmful. Best thing is to eat a healthy diet, exercise regularly, avoid stress, get good sleep, think positive and stay happy. Wishing you a good health. Take care. You can ask me a direct query on this website using the below link: http://www.healthcaremagic.com/doctors/dr-polash-sannigrahi/64925