I have a Puggle, and I need HELP ASAP?

I have a black puggle. He ate almost a full Dunkin Donut's Donut! It was the newer one with Carmal on the top with a little chocolate swizal thing on it. I know Donuts, Caramel, and Chocolate are all NOT good, but what will happen to him? My family is worried, and ANYONE WHO IS UP I WILL U HELP ME!!!! PLEASE! He is 2+ years if that helps