Artificial flavor. 5 calories per serving. 90% fewer calories than leading beverages. Caffeine energy releasing B vitamins. Makes 10 quarts. 1 pack makes 2 quarts. Contains 60 mg caffeine per serving and is a good source of B vitamins which help release energy from the food that you eat. Sugar free. Low Sodium. This product 5 calories; leading beverages 70 calories. CystalLight.com. Gluten free.