PH 1500 Electrolyte Tablets 15 SRVPH 1500 is a very strong electrolyte drink designed to help you start hydrated (and stay that way once you're sweating, if you're a heavy salty sweater). Dissolve 1 tablet in 16oz of water. Vegan Suitable for vegans, but not independently certified as such Vegetarian Suitable for vegetarians, but not independently certified as such Gluten Free Gluten free, but not independently certified as such Dairy Free Dairy free, but not independently certified