Did you know that what's happening in your digestive tract affects your overall health? All food, even the healthiest choices, needs to be processed correctly to get the maximum nutritional benefit. It's important to take care of your digestive health so you can get the most out of what you eat. That's why Nature's Bounty created Ultra Strength Advanced Probiotic 10.Nature's Bounty Ultra Strength Advanced Probiotic 10 contains 20 billion live probiotic cultures.** Contained within these 20 billion live cultures are 10 distinct probiotic strains. More than 400 species of microorganisms live in the adult human digestive tract. So Ultra Strength Advanced Probiotic 10 delivers a wide range of unique probiotic microorganisms in a highly concentrated formula. That means you get the benefits of targeted multi-strain support to keep your digestive system in optimal balance.*A large percentage of your body's immune-system cells are contained within your gastrointestinal tract. Probiotics help maintain healthy intestinal balance, providing support for immune health.* A healthy digestive tract helps maintain overall immunesystem health.**These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.