Perfect Probiotic™ Adults 50+ 50 Billion is formulated with a higher ratio of Bifidobacteria probiotic strains to support the digestive health of Adults 50+. Containing 8 probiotic strains in a delayed release vegetable capsule, it is part of the world's first TRU-ID® certified probiotic family, with every species on the label present. With 50 Billion Colony Forming Units (CFU) guaranteed to expiry, it is gluten-free & vegan, while its fridge & shelf stability could promote a favourable gut flora. Cautions: Do not use if immune-compromised. Consult a health care practitioner if symptoms of digestive upset occur.