The gut-health market continues to grow rapidly. Consumers are paying more attention to probiotics in supplements and beverages, but choosing the right strain remains a challenge for many R&D teams. This article summarizes the most popular strains, how to preserve CFU through processing, and how to design credible functional claims. Popular Probiotic Strains Lactobacillus rhamnosus GG: one of the most studied strains, supports gut and immune health. Lactobacillus plantarum 299v: helps reduce bloating and supports gut microbiome. Bifidobacterium lactis BB-12: highly stomach-acid tolerant, supports digestive health. Lactobacillus paracasei LP-33: popular for immune and allergy support. How to Preserve CFU From