Dear doctor, i want to know average stamina(intravaginal ejaculation latency time) is 5 min and before 2 mintes it is considered as premature ejaculation. My question is if anybody wants to increase stamina from 10 to 15 minutes, will it be possible. And the medicines which you prescribed for premature Ejaculation they bring the patient stamina at average leval(mean 5 minutes) or it can go from 10 to 15 minutes.