ABx Support is a blend of the non-pathogenic yeast Saccharomyces boulardii with Lactobacillus rhamnosus, Bifidobacterium bifidum and Bifidobacterium breve. These species have been shown in controlled clinical trials to reinforce commensal gut bacteria. This hypoallergenic is a great adjunct to antibiotic therapy and is provided as a convenient 14-day supply for concurrent use during antibiotic therapy, as well as in larger bottles of 60 capsules to continue to support GI health after antibiotic therapy.