Hi myself abhishek 24yr old guy I'm doing sex more than 3 time but every time ejaculated too quickly (2 to 5 sec) my weight is 43 and height is 5 feet six inches is this is the main cause of ejaculation quickly or has a problem of premature ejaculation...im also suffering from gallstone .To remove this problem can I take vigrah 50mg for performing well because someone advise me for vigrah and it's not harmful please suggest.