What is the best known treatment of premature ejaculation in the world. My friend is suffering from the same. is there any herbal treatment also which cures it permanently. He is of the age of 47 married 20 years back. whether gensing liquid works. How it should be taken. is there any other best remedy which should not have any side effect. some good exercise also may help.

I honestly thought that this question was going to be about Physical Education class at school.
LMAO
Exercises is the most effective way.
Jelqing exercise technique.There are others.
masturbate half an hour before sex
may I share a theory with you? Thousands of years ago, when we were all cave-men, PE was a good thing. The main aim was to get the female impregnated quickly before that big bloke from the next cave hit you with his wooden club. Now that sex is recreational, we want it to last longer.
At such age he should have more control. PE is uslly in youngsters. For religious reasons, he can not try stop-go-stop method which involves masturbation. There are medicines like antidepressants but there are side effects. Needs sex therapy if possible. Good luck!