Natural lemon flavor with other natural flavor. 5 calories per 1/5 packet. This product contains 5 calories per serving. Leading beverages contain 70 calories per serving. Sugar free. 90% fewer calories than leading beverages. No caffeine. Low calorie. 6 drink mix packets. Makes 12 quarts. 100% quality guaranteed. Like it or let us make it right. That's our quality promise. essentialeveryday.com.