Gut health* Immunity support** Biotiful Gut Health's Kefir Yor-guts are made by fermenting high-quality liquid oats with billions of live cultures, and are rich in plant-based nutrients. Made with added calcium and vitamin B12 for gut health* and immunity** support, no sugar added. Enjoy anytime, at breakfast or as a snack. *Calcium contributes to the normal function of digestive enzymes. ** Vitamins B12 and D contribute to the normal functioning of the immune system.