[xtracto]

I maje my own electrolyte drink with water, spoonful of sugar and spoonful of "low sodium" salt: they add potassium to those, which completes the electrolyte menu.

Sometimes I add a dash of lime

Veeeey low cost and great. And you can pre-mix it in a zip lock bag to have it always available. And add some orange flavour kool-aid powder if you need flavour.

Commercial Rehydration drinks are overpriced and overhyped IMHO