Description:Lifeway Kefir cultured lowfat milk smoothie strawberry flavor packs a serious probiotic punch of live, active cultures. 99% Lactose Free. 11g of Protein per serving. BPA Free packaging, certified gluten free. Kefir is a tart and tangy, creamy cultured milk smoothie that contains live and active probiotic cultures and is high in protein, calcium and vitamin D. Refreshing and effervescent, it has been popular in Eastern Europe for more than 2000 years. No artificial sweeteners, rich in calcium.