What are the Dehydration Causes? And how to get instant dehydration relief? These are some of the commonly asked questions. If you also have the same questions then the answer will be rehydration powder. Staying hydrated is more important than drinking water. RecoverORS provides the best hydration powder that contains 30% more electrolytes and less calories compared to other hydration drinks. Our best drink for dehydration in adults contains only essentials, no extra sweetness, and flavors.