YoCream International Inc. has launched Activia Frozen Yogurt, a rich and creamy soft serve frozen yogurt that helps naturally regulate the digestive system. With 100 calories per four-ounce serving, nonfat Activia Frozen Yogurt offers customers an additional way to enjoy Activia as a dessert or snack. Available in four flavors: Vanilla, Strawberry, Peach and Blueberry,…