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Stay hydrated with Nathan Catalyst electrolyte drink mix tablets on your next backpacking trip or long-distance bike ride. Nathan Catalyst tablets help replenish essential sodium and potassium to keep you performing at your best. Drop 1 tablet in 24 fl. oz. of water; tablet dissolves quickly and mixes well. *Discount will be applied when you check out; offer not valid for sale-price items ending in $._3 or $._9.