This product is not intended to diagnose, treat, cure or prevent any disease. (2) Based on IRI unit sales data, January 2021. (4) WebMD. 12 DIVERSE STRAINS: Contains 12 Bifido and Lacto probiotic strains, including the No. 1 most studied strain, the L. rhamnosus GG, for gut health and healthy immune response (3)(4).