I was a frequent buyer of vitamin water. Had a couple of favorite flavors and used it for years to hydrate me while I worked. Recently bought a bottle and the minute I took a drink I knew something was different. Sure enough I compared an old bottle to the new one and found out that they have added stevia extract to all the formulas. I called the company and was told they were changing the formula in all the flavors. It used to be refreshing, but now is way too sweet and not refreshing at all. I have stopped buying it completely. While Stevia extract might be considered a natural product it is way sweeter than sugar and leaves an after taste like artificial sweetners. I won't buy it anymore unless they go back to the old formula.