GI Regularity and Consistency. Temporary Relief for Minor Bloating. Longevity Formula/Gluten-Free. It has been found that as we age the number of healthy organisms in the large intestine starts to decline, upsetting this delicate balance, which influences both immune function and digestive health. This product utilizes bacterial strains known to colonize the human GI tract and features Bifidobacterium lactis HN019. Clinical studies have demonstrated that HN019 supports digestive regularity and promotes normal immune system function in healthy adults over age 50.