SOS Hydration Inc | 728 followers on LinkedIn. We’re SOS Hydration — The Official Hydration Partner of Water. Go on, name a more iconic duo. We’ll wait. 💧 | SOS has combined proven sports and medical science into the most advanced hydration drink out there with the purpose of hydrating every type of lifestyle regardless of age or profession. Science Simply Put: As a hypotonic drink (thats more effective than an isotonic drink or sports drink at rehydration) we can be compared to a drinkable IV drip only far cheaper and convenient to take on the go. SOS is 100% natural, gluten free, dairy free and contains only 10 calories per serving.