The country's two leading kefir manufacturers-Helios Nutrition Ltd., Sauk Centre, Minn., and Lifeway Foods Inc., Morton Grove, Ill.-both use the term probiotic on package labels. On Lifeway's package, label panels list the 10 live and active kefir cultures inside every bottle. The company has also licensed the use of the dairy calcium and weight loss claim, which it flags on front panels and describes on the side.
Labels of Helios Nutrition's Organic Kefir with FOS state that the drink supports a healthy intestinal ecosystem in children and adults. The beverage also includes fructooligosaccharide (FOS), which is described as "food for your own beneficial bifidobacteria."