Kefir is a fermented milk drink similar to a thin yogurt or ayran that is made from kefir grains, a specific type of friendly bacteria. It is commonly made with cow's milk, although can be made with sheep and goat's milk. Kefir is commonly drunk to promote gut health.
Kefir from cow's milk contains 0 - 4% lactose. Kefir also contains many different strains of friendly bacteria, including, Lactobacillus, Lactococcus, Streptococcus, and Leuconostoc.
An intolerance to this item may indicate gut biome, yeast and fungi imbalance, or an inflamed digestive system.