By definition, caffeine is a drug. And its intent is to give you energy, to improve or enhance performance.
Name one person that doesn't crush a Red Bull, Monster, Reign, Bang, or a Rockstar at some point during a tourney. I'll bet that answer is practically no one (not even Timmy, I'm sure), which would render this poll inaccurate.
If by PED, you or Tim are referring to someone sticking a needle in their ass, then you should probably state that, no?
Just my 0.02.