Hello Welcome to HCM Premature ejaculation is a distressing problem. You are a 31 years old male with good health. Over the counter supplements are usually marketed with tall claims but results of these supplements are not proven. If you are having problems in sexual and marital life then I would advise you to consult a Psychiatrist for treatment. Treatment is available in medicines form and non-medicinal treatment. Non-medicinal treatment- Divert your attention during intercourse. This will help to prolong the ejaculation time. Kegels exercise which is nothing but strengthening pelvic muscles is also useful. Masters and Johnsons technique is also good method to delay ejaculation. In this technique individual is told to squeeze the tip of penis just before ejaculation. This results in delaying the time. Medicinal treatment consists of use of SSRI drugs. Dapoxetine is commonly used. The drug is usually given 2 hour before intercourse and help in delaying the time. Consult a Psychiatrist for detailed opinion. Thanks, hope this helps you