PH500: PH 500 is a moderate strength electrolyte drink designed to help you stay hydrated when you're sweating. Dissolve 1 tablet in 16oz of water. 15 tablets per tube. PH1000: PH 1000 is a strong electrolyte drink designed to help you stay hydrated when you're sweating. Dissolve 1 tablet in 16oz of water. PH1500: PH 1500 is a very strong