I'm 23.. have been masturbating for 10 years, no problems.. having sex for 4 years, no problems. I started taking jacked3d almost a month ago and ever since I started, whenever i masturbate i cant get fully erect and I finish within about 2 minutes! It's pretty scary.
Whether you think its not working good to you better to stop it now or that supplement will scare you for the rest of your life. My friend took numerous supplements at a very young age, now he is in a serious agony. He cannot even make his penis tough. What a mess.