Bill W, one of AA's founders, knew that Niacin (B3) helped alcoholics, but it was so effective that the AA board told him to put the plug in the jug - that is, not to talk about it.
Here are some details of Hoffer's Niacin therapy for alcoholism - and for other conditions, as well.
http://www.doctoryourself.com/hoffer_niacin.html