There seems to be a lot of concern in the Supernatural fandom that Dean may have an addiction to pills. This came about after an episode in which Dean pulled what looked to be a prescription bottle out of his pocket and offered them to Sam.
Is Supernatural going the House route, making Dean an addict? Not anytime soon, according to Watch With Kristin:
Rest easy, kids. The Winchesters have a lot of problems, but according to a source close to the show, drug addiction not one (currently) of them. There you have it: Dean is not addicted to pills!