Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
It is a powder that is the same as the powerade drink in the store but it is cheaper this way. I have a medical condition that makes me sweat a lot and I get major cramps. Drinking 1 or 2 bottles of 600ml stops my cramps.