Precision Fuel and Hydration electrolyte drink mix packets contain no artificial ingredients and come in different strengths to match how YOU sweat. PH 500 is a moderate strength electrolyte drink typically used by athletes with low to moderate sweat/sodium losses. PH 1000 is a strong electrolyte drink typically used by athletes with moderate to high sweat/sodium losses and those exercising in hotter/humid conditions. PH 1500 is a strong electrolyte drink typically used by athletes with moderate to high sweat/sodium losses and those exercising in hotter/humid conditions. Whichever strength you require, Precision Fuel and Hydration electrolyte drink mix packets will be your secret weapon. Sold in a pack of 8 Designed to help you stay hydrated Carbohydrate-electrolyte solutions enhance the absorption of water during exercise Powdered drink mixes that mix up into a ∼3% carbohydrate solution (when mixed as directed) Delivers a solid dose of sodium per 32oz, when mixed as directed No artificial ingredients, flavors, sweeteners Informed Choice certified Mild, citrus-based flavor to reduce flavor fatigue 8 waterproof drink mix packets per box Vegan, Gluten and dairy-free Osmolarity = 500: 147 mOsmol/L, 1,000: 161 mOsmol/L, 1,500: 178 mOsmol/L PH = 500: 5.2, 1,000: 5.47, 1,500: 5.84