Hi Thank you for asking HCM I have gone through your query.For increasing sex stamina you can have good exercise and nutritious food.Foods like eggs seafoods like prawns avocado dates are aphrodisiac which can be taken also. Regarding Premature ejaculation:You have to get rid off anxiety including performance anxiety and stress as those are offenders for many.You can try squeeze and stop technique.You can deviate your thought to something nonsexual when you about to near ejaculation.You can stimulate your partner to maximum before getting yourself stimulated.You can put on a condom or condom with anesthetic which will decrease the excessive stimulation on penis and there by prevent premature ejaculation.If all these not helping then you can approach a psychiatrist for behavioral therapy and medicinal treatment like anti depressants.SSRIs like Paroxetine as well as clomipramine gives good out come in many.Dapoxetine a short acting SSRI which can be used in need also.Hope this may help you. Let me know if you have any further query.