The latest launch from functional hydration brand Nuun is Nuun Instant, a new powder formula aimed to relieve dehydration before its symptoms become evident. The formula is based on the World Health Organization’s Oral Rehydration Solution, while also containing Vitamin C and Vitamin B12. Nuun Instant is available in Lemon Lime and Watermelon flavors online and in stores for $2.49 per single serving packet.