They claimed there to be an improvement in the flavor on the canister. I think they changed it about a year ago perhaps. I had one of the old formulas, and just received some of the new. Wow, completely different taste. Though I cannot find a whole of difference on the ingredients, it tastes sooooo much better. It has a carbonated, sweet-ish pink/purple flavor now and doesn't smell like sewer after it is mixed. This stuff gives me a little energy boost but most importantly it seems to help me recover substantially better than without it. It mixes great and I have found myself even mixing lighter servings to take place of just drinking plain water.