The SO+S product is a beneficial rehydrating aid to place into fluids to optimize hydration. I can see it being used for re-hydrating after exercise in the heat and gastro-intestinal upset, and also for prevention of dehydration.
I like the easy to open packs that are in an individual serve, the smell is good, and taste is good in both water and flavored drinks.
Senior Sports Dietitian
United States Olympic Committee