exactly I will use the medicine and can get it from the online base ,So I can choose that from the online of the folling sites,,, http://www.half-price-pharmacy.com

Yes, there are medications out there that can help males who deal with premature ejaculation, but before resorting to them, why not try natural ways such as Kegel Exercises and the Stop and Go method for starters. These are things that require you use no money (except maybe for a condom and the internet access) and take little time from your day.
Kegel exercises are basically the loosening and tightening of your PC muscles (the muscles that control ejaculation). Below I will list about 2 websites that I feel are good for you to use to learn to do this correctly. This will not only help with premature ejaculation, but also urine control. This method will actually take more time to show results, but it’s nothing you cannot handle if you’re willing to be patient.
For the Stop and Go Method, you merely stop stimulation to the penis when you feel your orgasm about to come (whether you must withdraw yourself from your partner or stop stimulation during masturbation to do this). When the orgasm dies down, continue. You can do this as many times as you wish until the desired time is reached. Realize also that the longer you wait, the more sensitive you will become, making it harder to hold off orgasm.
You can get medication if you wish, but you will need to talk to your doctor about what kind as he will probably have to prescribe it. Just make an appointment and tell him your problem. After doing that and getting his suggestion go from there, but these two methods should help you overcome this. Hope this helps.