Open Farm Organic Kefir is a powerful probiotic made from pasture-raised cow's milk. It contains 11 live and active cultures along with 12 Billion Live Probiotics per ounce. Organic Kefir is nutrient-rich, vitamin-filled, and moisture-packed. It provides enhanced nutrition, immunity, digestibility, and wellbeing for cats & dogs. Use as a topper or treat on wet or dry food. Simply thaw and serve.