Immunity. Probiotic! Contains more than 20 billion units of activity per bottle. 2x more activity than regular kefir. 10+2 live & active kefir cultures - Lifeway's ProBoost. Grade A. 100% vitamin C DV. Lifeway's ProBoost: 10 + 2 Live & Active Kefir Cultures: lactobacillus reuteri, Bifidobacterium lactis, L. casei, L. lactis, L. acidophilus, L. plantarum, L. rhamnosus, B. bacterium longum, Leuconostoc cremoris, B. bacterium breve, S. diacetylactis, S. florentinus. The Power of ProBoost: With Lifeway's BioKefir, you get Lifeway's essential 10 live & active kefir cultures plus Lifeway's exclusive ProBoost, contains lactobacillus reuteri and Bifidobacterium lactis; 2 powerful probiotic strains clinically shown to support digestive health and enhance immunity. Welcome to a powerful feeling of well-being. National Kefir Association. Gluten free. Packed with Acerola: Acerola is the fruit of the Acerola bush, a native plant of the West Indies. It stands out among other fruits for its high Vitamin C content - it is one of the richest sources in the world. The fruit averages over 1600 mg of vitamin C, Acerola also is rich in other nutrients ,including carotenoids and anthocyanins - compounds with antioxidant activity. BPA free packaging. Made with renewable energy. This product is made with 100% certified renewable energy.