Not sure exactly, got drunk as hell when I was younger 14-15 or so. About 2 months ago I thought I was going to be all hardcore and chug what was left of a fat bottle of sky. The bottle didn't have too much in it, maybe like an inch and a half or 2 inches of a half-gallon bottle. Was ok for about 10 mins then puked. Don't know if it was the amount or the fact that I chugged it, heh