ncle Lee's Body Slim series of Dieter Tea (also known as "Body Balance Dieter Teas"), are blended with premium natural herbs and spices. The formula and preparation are based on an old Chinese book of medicine--"Detailed Outlines of Chinese Herbs", by Lee Se-Zhen, 1518-1593. After centuries of use, this formula has been proven to be one of the best healthy beverages for dieters. Besides from being caffeine free, a bit of lemon has been added to the flavor for the most popular flavor that everyone loves in a cup of tea while benefiting from the effects of Uncle Lee's Body Slim Dieter Tea series. These teas do not cause cramping, but as with all natural laxatives, you should combine the taking of these teas with the healthy addition of fresh fruits and vegetables and natural forms of fiber for good health.