Flavored + other natural flavors. Doesn't power-c sound way cooler than vitamin C? We thought so too. Zero calories per serving. Excellent source of c and b vitamins. 120% vitamin E. 80% vitamins B5 B6 B12. Zinc & chromium & 20 mg taurine. Electrolytes. Per bottle, see nutrition facts for more details. 0 calories per bottle.