Nature’s Bounty Ultra Strength Probiotic 10 is the answer to your everyday probiotic needs. Shaped by over 20 years of clinical research, Probiotic 10 provides 20 billion live cultures and 10 times the diversity of probiotic strains to help supplement the natural diversity of your microbiome. Featuring clinically studied strains of probiotics, Probiotic 10 delivers good bacteria to your system. These strains aid in the body’s natural digestive process, and contribute to immune function and upper respiratory health, all in just one daily capsule.