Gut Health* *Calcium contributes to the normal function of digestive enzymes. Immunity Support** Biotiful oat base kefir is packed with naturally healthy nutrients, supporting your immunity** and with no sugar added. **Vitamins B12 and D contribute to the normal functioning of the immune system. Biotiful Gut Health products have been enjoyed by UK consumers for over 10 years. Based on the traditional 2000-year old recipe, our oat kefir are crafted by fermenting high quality oat base with an authentic blend of live cultures. We love it for breakfast or as a snack.