While marketed as an enhanced, health-promoting water, nutrition experts question whether vitaminwater beverages are indeed healthful (Day 2002, Somers 2006). Depending on the variety, each 20 fl. oz. bottle contains 100 to 125 calories and from 20 to 32.5 grams of sugar, while pure water contains no sugar or calories. On the other hand, a 20 fl. oz. bottle of Coca-Cola contains 240 calories and 68 grams of sugar and contains no vitamins of any kind.