Oh goodness. Ive snorted other things and it burned like hell too so i might be fine or my nose will be on fire.It won't matter if you've eaten before you snort it cause the drug will be absorbed through mucus membranes in your sinuses not your stomach. Be forewarned snorting Ambien burns like hell and I've snorted quite a few drugs in my time also the Ambien will hit like a ton of bricks if you take it that way and you'll be quickly thrown into a world of some crazy ass hallucinations you won't remember most of and probably order stuff you don't need online and do other dumb possibly dangerous stuff.
^ If you are suggesting rectal route of administration, you may want to explain a way to facilitate this process.Shove it up you ass. Period.