Probiotic. With other natural flavors. No rBGH or rBST. 10 + 2 Live & Active Kefir cultures - Lifeway's ProBoost. Real. No artificial growth hormones. No artificial sweeteners. Grade A. 10 + 2 Live & Active Kefir cultures - Lifeway's ProBoost: Lactobacillus acidophilus NCFM; Bifidobacterium lactis HN019; 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: No matter who you are or how busy your life, Lifeway Kefir provides you with the best nutrition in one delicious beverage. With Lifeway's Essential 10 Live and Active Kefir Cultures, plus Lifeway's exclusive new ProBoost, there's nothing better for your health. Lifeway's ProBoost contains lactobacillus acidophilus NCFM and bifidobacterium lactis HN019; 2 powerful probiotic strains clinically shown to support digestive health and enhance immunity. Kefir - known as the champagne of dairy, can be effervescent due to it's unique probiotic strains - this is 100% normal, look for a slightly rounded bottle. Gluten free. 99% lactose free. Made with renewable energy. This product is made with 100% certified renewable energy. BPA free packaging. Rich in calcium. Our Farmers' Pledge: We only use milk free from rBST and rBGH and is GMO free. No significant difference has been shown between milk derived from rBST/rBGH treated and non-rBST/rBGH treated cows.