I have tried a dozen+ electrolyte/hydration drinks, waters, and powders. Above all, this is the most effective one, tastes great (just like the packet states), smells fruity, and has the strength to keep headaches from dehydration at bay! Some days I empty an easy to open packet in a glass of water and down 8 oz to jump start my day with a zip! Most days, my water bottle contains a mix and match of two packets, ice, and water to remind me to hydrate! Hydrate! Hydrate! After 2 weeks, DD has become my Core Strength Habit with vitamins, not caffeine. Electrolytes drive hydration into your body’s cells, thus tamping down one of the more common reasons for headaches: dehydration. I have more energy, especially when I refresh my water bottle with another packet or two just before 3:00PM. I like these flavors and the results so much, I subscribe to def save.