Dear god I had to bump this, ambien ONLY works recreationally if you make sure you take it at least three hours after eating or on an empty stomach. I use to take them alot when my dad had a script, and if you take enough (maybe one or two pills? I don't remember the dose of the pills i took) you WILL TRIP, im talking visual hallucinations more distorting than shrooms (though maybe not as intense) I dont know why eating before taking it affects it but it WILL NOT work if you take it shortly after eating. As far as snorting goes i would say it would be a waste though iv never tried it, i think it has alot to do with it dissolving in your stomach.
Seriously though, try not eating for a few hours then taking a little more than the regular dose, but be careful, it can reallly trip you out.