A healthy immune system starts with supporting a healthy gut. (1) For 50 years and counting, Nature’s Bounty has offered only the best ingredients with quality based on science. Nature’s Bounty Ultra Strength (2) Probiotic 10 contains 10 distinct, clinically studied probiotic strains backed by 20 years of research to supplement the natural diversity of your digestive ecosystem as well as contribute to immune health and upper respiratory function. (1) These powerful probiotic capsules contain 20 billion live bacteria cultures, aiding your body’s natural digestive process. (1) Our one-per-day formula makes it simple to support gut health and whole-body well-being—just take one capsule daily, preferably with a meal. (1) Whether you’re vegetarian or on a gluten-free diet, this probiotic supplement is perfect for you.