Did you know that certain strains of bacteria in your gut naturally decline as you age? Fortify Optima Pre+Probiotic for adults age 50+ is formulated for adults ages 50 and older with Bifidobacteria strains. Fortify Optima Age 50+ Advanced Care designed to support a healthy gut microbiome, colon health, digestive balance, and immune health with 15 probiotic strains and 90 billion live probiotic cultures per serving.*