I Took a Nap With a 20oz Bottle of NyQuil Cold/Cough/Flu, How Will This Affect Me?

This is all hypothetical, and utterly dissassociated from reality, I swear. I'm not going to do this, since it's obviously ridiculous, but I'm just curious, how would your body react if you drank a 20oz bottle of NyQuil and then took a nap? Please tell me.