Interesting movie(spoilers and questions)

I think Jason was the mastermind behind Urge all along. Why would they be able to get that massive amount of it after the first night? It was literally everywhere at the house. Plus

1. Jason was on the island long before anyone else was
2. Only Jason talks and Sees Pierce's Anti-Christ Character, who is supplying the stuff
3. He is always the one that has the Urge on him the first two times they all do it.
4. The bouncer pays attention to him the first time they walk up to the club but pays no one else any mind.

and no it didn't turn people into "Zombie's" in the the traditional sense. Yes peoppe became mindless to their own self indulgences. Most people just gave into their rage and gluttony, hence those people gorging themselves in the snack asle and looking at the kid with murdous intent. The whole thing is basically is for you to just give into your natural desires. But that is why Alexis Knapp's character wasn't affected after the second dosage, she has a huge problem with body dismorphia/anorexia and when she woke up in the cake, her own shame pretty much cleared her mind back to "normal" and she was no longer able to give into her primal urge to just eat.