Had to teach my son 10 an expensive lesson in life €86 spent on this bottle and a number of flavours . After reading numerous disappointing reviews I was reluctant to allow him to purchase . He however wanted it based on seeing an add pop up showing what the bottle claim to do. Being Healthy is what he is all about as he always brings water to school and taught like others in his class this was a good thing. Well to see the disappointment on his face when after trying this he realised he had been scammed out of his own money. Life lessons. Tried other flavours and the setup again and again to prove it was a gimmick . Bad product with false advertising. Honest review as various household members tested to come up with the same conclusion.