Hello dear... Regarding the problem of Erectile dysfunction, it is due to decreased blood supply to the penis. And medications like Cialis & Viagra increase blood flow to penis & maintains erection. It can be improved by having a diet rich in fruits, vegetables, fish, nuts & honey. You can also do oil massage of the penis...it increases blood flow & maintains the erection. Regarding the problem of premature ejaculation, it s mostly related to anxiety that whether you will be able to perform or not. So...don t worry about all this & stay relaxed during intercourse. Avoid stress...practice meditation..this helps in improving concentration & builds up the confidence level. Avoid smoking & alcohol. 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 Healthy Life. Take care.