Florastor is a yeast based probiotic supplement, with the main ingredient saccharomyces boulardii lyo. The product contains lyophilized Saccharomyces boulardii, hence the name. The lyophilisation makes the yeast last longer, and less susceptible to temperature changes. The shelf life of Florastor is better in consequence.
Flostator is great to prevent stomach and intestinal problems assosiated with antibiotics. Florastor can be taken with antibiotics, maintaining efficiency, unlike bacteria based probiotic supplements.
There is also evidence that Saccharomyces boulardii is an effective probiotic against Candida. Combined with an appropriate regimen, and other bacterial probiotics, Florastor can be a great alternative to the antifungal treatments. In fact Saccharomyces boulardii is a great treatment against many bacterial pathogens, and this is why is so effective against many gastrointestinal disorders. Acording to this article, S. boulardii can kill C. difficile, H. pylori, and various parasitic infections.