I had my reservations about this product but goddam did it work! I honestly can't remember the last time I drank so much in one night, and all without a friggin hangover! Was tipsy but not shit faced making for an insane party which went unto the wee hours without passing out. Woke up without any headache or puking, etc. Gotta say I couldn't believe this would work but don't think I can go out partying without Prefunc. You guys rock!