Support your immune system and gut health with Nature’s Bounty Probiotic 10.* Nature’s Bounty Ultra Strength† Probiotic 10 is a daily probiotic supplement containing 10 distinct, clinically studied probiotic strains backed by 20 years of research. This number one muti-strain probiotic^ supplements the natural diversity of your digestive ecosystem while contributing to immune health and upper respiratory function.* Each serving of these powerful probiotic capsules contains 20 billion live bacteria cultures, aiding your body’s natural digestive process.* With our one-per-day formula, it’s easier than ever to support gut health and overall wellness.* Nature’s Bounty Probiotic 10 capsules are gluten-free, vegetarian friendly, and backed by 50 years of trusted quality. A healthy immune system starts with a healthy gut, so support them both by adding Nature’s Bounty Ultra Strength† Probiotic 10 capsules to your daily wellness routine*.