Natural flavor. 5 calories per 1/8 packet. Gluten free. Sugar free. Low sodium. 90% fewer calories than leading beverages. 99.9% caffeine free. This product 5 calories; leading beverages 70 calories. Low calorie. Makes 8 quarts. 4 pitcher packs. Each packet is filled to make 2 quarts. 1 packet makes 2 quarts with 8 cups cold water. 2 packets make 4 quarts with 16 cup cold water. CrystalLight.com.