Florastor® is a daily probiotic supplement that strengthens your digestive balance and supports a healthy immune system.† Florastor is the ONLY probiotic with Saccharomyces boulardii lyo CNCM I-745—a unique probiotic strain with over 60 years of use and research. When taken daily, Florastor helps increase the natural flora in your digestive tract and support your overall health.†