All of this is „open label“ and „on label“.

Viagra/Cialis or something else?

The pde5 menagerie has a few more now but I feel like there is little difference between them.

Permanent tadalafil if you can stand the side effects, any of the others if you are suffering and want them to be over faster.

Interesting I never heard of ED meds of that nature described like more addictive drugs where "you take one freebie and you're coming back for more." Why don't people get them OTC instead of on the black market? Are you from a place where they're more illicit?