Joking aside, the dose makes the poison. On a society level, alcohol is a problem, but on a personal level, it is still unclear how much of an effect moderate drinking has, and in which direction it goes, that's the topic of the article.

If you want a strong poison most of us use, take acetaminophen. More than 12g and it can kill you by liver failure. It is the leading cause of acute poisoning, and yet, it is very safe at normal doses (1gx3/day).