Well said, Jethro. Physicians and pharmacists are professionals, they aren't going to ridicule anyone for asking for an ED prescription any more than they would snicker at the size of a patient's penis or bug their eyes out at a patient with breast implants. What they may do is suggest medical tests to see if there's an underlying cause to erectile dysfunction - which is wise.
ED drugs are like any other drug. Why would anyone want to risk buying, let's say, chemotherapy medications or an EpiPin from a sketchy online source who may ship a placebo or who knows what?
At the risk of being sanctimonious, the best ED drug in my opinion is to hit the treadmill for some cardio exercise, do some light resistance training, and make some simple food intake changes. You'd be surprised at what that'll do for sexual endurance and enjoyment (with no ED side effects).