http://consumerist.com/2008/08/20/new-york-magazine-has-a/

New York magazine has a good write-up of Function Drinks, an “enhanced water” company that has the marketing advantage of being founded by a doctor. Although their nutritional claims appear to be a little more scientifically researched than, say, Vitamin Water, the sugar content is the same, and, as the article points out, there’s still no real consensus on whether antioxidants do any good.