National Rehydration Day was founded in 2026 by Liquid I.V.® to address the recovery needed following America’s largest annual sports celebration. Join National Day Calendar and Liquid I.V. as we educate fans in how to maintain healthy hydration while participating in one of the biggest sporting events in the U.S.
Liquid I.V.® is America’s #1 powdered hydration brand since 2020. Based in Los Angeles, CA, and part of Unilever, their products are rooted in science, driven by culture, and grounded with impact.
Powered by LIV HYDRASCIENCE™, Liquid I.V.'s science-backed formula is designed with an optimized ratio of electrolytes, essential vitamins, and clinically tested nutrients to transform ordinary water into extraordinary hydration. Every great tasting formula contains 3x more electrolytes than the leading sports drink. Not only does it contain five essential vitamins, the formula is also vegan, gluten-free, and non-GMO.