Is this a known cause for ED?

nah fam , from what i read if you do masturbation frequently it does not make you have ed .but if you do it in the wrong way mybe it will induce it.and for your information we us man must be careful from doing any kind off excersice that say it will make your penile longger because if you read in thunder place forum you will see many man suffer with their erection after doing that excersice such as jelqing

Is Critic Q sold in pharmacy? Need doctor prescription paper?

Go to the gym and lift weights 3 times per week. On werkends run 10km. Ur small head will thank you later.

This thread discusses about erectile dysfunction, no? Not about penis size. If u got ED than ur penis size not important anymore.