Primadophilus OriginalEnsures 5 billion CFUs per capsule2 strain lactobacillus formula (rhamnosus & acidophilus) specifically designed to meet the needs for ages 12 & upThe True Guarantee of PrimadophilusThe Primadophilus brand is backed by an unparalleled True Guarantee that ensures consistent purity potency and intestinal delivery. This 3 part guarantee includes:True PotencyThe potency of CFUs claimed on the label is fully guaranteed until expiration not just at time of manufactureTrue ReleaseDelayed release ensures stomach acid survival and intestinal deliveryTrue IdentityOnly the probiotic strains listed on the label make their way into a Primadophilus product