At Lucky Vitamin, buy one Liquid I.V. Hydration Multiplier Natural Powder Drink Mix 16-Pack in Lemon Lime for $20.99 and get a second 16-pack for free. (The additional pack is added to cart automatically.) With $5.95 for shipping, that's the lowest total price we could find for this quantity by $36. Using cellular transport technology (CTT), it purports to hydrate you two to three times faster than water alone. It contains three times the electrolytes of leading sports drinks and 11 essential vitamins and minerals.

Note that this item is backordered and estimated to ship in two to 16 days.