Is pretty much impossible. The media has planted the "PED == DEATH" meme so firmly, I can barely get a point in with libertarians, let alone our masses of low information voters.
The 2008 movie "Bigger, Stronger, Faster" is pretty good ammo to use with libertarians.
I had a surreal conversation with a very good friend. No stranger to the iron game, she felt completely consistent in saying that taking strong pain killers to mask the pain of an injury was A-OK, yet taking GH to speed healing was somehow immoral.
Strange.