1) What is Nuun Active Hydration, and how does it work? Nuun Active Hydration electrolyte drink tablets are a brand of electrolyte drink tablets. The tablets are to be dissolved in water and consumed, and it uses effervescent technology. The drinks have electrolytes to keep you hydrated, all-natural ingredients, and a refreshing taste. Nuun Instant, a drink mix that you add to water and stir, is a new addition. When the tablets are dissolved in water, a refreshing, light-tas