You are just 20 far too young to get into pde5 inhibitors like viagra. Please consult a competent certified clinical sexologist who can advice you further you can begin with an online consultation first then go to the dr if needed. If yr smoking u need to stop it n Drinking should be minimum. Eating healthy fruits n vegetables is important in having a health sex life. Unless we take yr medical history n yr familial history is incorrect to arrive at a diagnosis but that doesn't meant u pop a pill that too a class four drug like viagra unless prescribed by the doctor as such drugs have side effects and u may have to pay the price unless yr under medical supervision and advices by a doctor never self medicate. We are here to help you in a proper manner. All the best.

Hi, u need to consult first personally to sexologist n then decide the treatment.

Have good sleep, do exercise & yoga daily for 1 hour. Take hot milk 1 glass morning & evening. Avoid spicy..chilli.nd fried food Take CP SHILAJIT tb....Manmath ras .... nd tb....sidh makardhwaj bati... one each morning & evening for 3 months...wd hot milk.. See d results or otherwise consult a sexologist personally .

Actually for proper treatment... Proper examination with history is necessary....As ayuvedic Medicines gives nice results in such problems.... Tablet, oil ,gel like ayuvedic remedies gives proper strength and stamina with proper erections