Ultra Flora Plus DF powder is a probiotic formula blended with a non-dairy formula that provides highly viable, pure strains of Lactobacillus acidophilus (NCFM® strain) and Bifidobacterium lactis. Helps maintain a healthy balance of intestinal flora and is desiged to provide intestinal support on multiple levels. Produced in a freeze-dried form and refrigerated during storage and shipping for maximum stability, and shipped with the most current viability assay to provide you with assurance of potency. Guaranteed to provide no fewer than 15 billion combined live organisms per serving through date of expiration.