I know that users of narcotics are able to drink loads of alcohol because for some reason the narcotics prevent them from getting drunk. I wish there was a legal drug that had that effect! Clutching at straws here
Kudzu has been used in research to see if it can curb cravings for alcohol. Some believe that it can help heavy drinkers to cut down. Here's a link to an interesting article:
http://www.msnbc.msn.com/id/7884540/