Nuun Raspberry Effervescent Ultra Hydration - 10 Tablets Nuun Raspberry Effervescent Ultra Hydration is your go-the-extra-mile water! This tasty and refreshing blend of electrolytes is perfect for exercise and on-the-go. When you sweat, your body loses vital minerals and electrolytes that need replacing for a healthy recovery and lasting performance. Nuun Ultra Hydration provides an excellent balance of ingredients for mineral replenishment and optimal hydration before, during and after your workout.