Feel Well - Keystone Probiotic Greek Yogurt (B. Infantis +L. Reuteri)Feel Wells Keystone Probiotic Greek Yogurt is more than just a delicious, thick, and creamy snackit's a potent wellness ally. Cultured with clinically studied strains Bifidobacterium infantis and Lactobacillus reuteri, this yogurt is designed to support your gut and beyond. In addition to the well known gut and immune benefits of L. reuteri, this yogurt delivers the powerful effects of B. infantis, which has been shown to reduce inflammation in