Fos-A-Dophilus – More about this probiotic supplement Fos-A-Dophilus is a high-quality probiotic supplement designed to support gut health and microbiome balance, particularly for individuals over 40. It features 6 native strains of beneficial bacteria, including high levels of bifidobacteria, which naturally decline with age. Each capsule delivers 4 billion live, viable bacteria and uses advanced GUARD technology—a patented, natural system that shields probiotics from stomach acid. Once in the intestines, it ensures a slow, targeted release for optimal absorption and activity. This unique blend is active throughout the digestive tract, from the small intestine to the colon. It is naturally fermented, antibiotic-resistant, shelf-stable (no refrigeration needed), and gentle on the stomach. Ideal for daily use or increased support during periods of stress, illness, or antibiotic use.