[Naturally Clayton knows the answer to this question. They're Tim's pills--anti-seizure, antidepressants, apparently also some pretty heavy-duty cough suppressants. Now he knows.]

[He can't tell House.]

Gotta be some kinda heavy prescription, whatever it is. Seen 'em carryin' the bottle around--right type, label's torn off. He don't want nobody knowin' what he's got goin' on.