I have premature ejaculation , can i use viagra to last long? I can do sex for 5min s and then i will ejaculate, but, my wife want more sex from. My penis is 4.5 inches when erect and uncircumcised, am i allowed to use small amout of viagra or suhagra to satisfy my wife for long? Otherwise, pls suggest me some medication to control premature ejaculation in india.