Muscatine

It would appear that this depicts 3 forms of poison.

Yeah

Who wears a grey tie with a blue shirt under a white frock?  It would be a bit more effective if he had the stethoscope in his ears. Oh wait---that's four. Strike the frock one and add a pair of those Groucho glasses and a cigar. I actually have a few of those bottles on a shelf. Kind of a passion at a time.

Exactly! And who crosses their left arm over their right arm too?