Natural Factors Ultimate Multi Probiotic is a one-a-day 12-strain formula featuring a guaranteed total of 12 billion live probiotic cultures at expiry, alongside prebiotics for long-lasting support. Each non-GMO, vegetarian capsule provides 8 lactobacilli strains and 4 bifidobacteria strains from human (8), plant (1), and dairy (2) sources, for comprehensive support of the small and large intestines as well as overall health.