Vicodin, the ones he always takes. He was convinced that he had detoxed from vicodin with Cuddy's help, but it turned out that it was all a hallucination.
I kept thinking it was Vicodin, but on the label when he dropped it, it said it was Oxy; which he has taken before and overdosed on it in Season 3. So that must be why his hallucinations were spiralling out of control because he was on a stronger medication. Or it was just Vicodin over abuse.
he thought he was detoxing, but he kept taking the vicodin. that was making him think that cuddy was with him and that the lipstick is cuddy's, but it was his vicodin bottle, and all that he though was just one big hallucination. and all of that happend because of the vicodin, and this is why he decided to go to mayfield.
But did it actually say oxycodone? i just rewatched that part and only managed to read half the word on the label "...codone", which could also mean "hydrocodone", the ingredient on vicodin that contains the opioid
