* With Clinically Documented Strains * 6 Beneficial Probiotic Strains * Probiotic Supplement * 12 Billion per Gram * Gluten Free * Jarrow Formulas Put the "Pro" in Probiotics Jarro-Dophilus + FOS contains strains that help protect and maintain a balanced intestinal microflora, and support immune function and intestinal health. FOS is a natural fiber that enhances the growth of beneficial bacteria in the intestinal tract. Each gram (approximately 1/4 teaspoon) contains 12 billion viable cells when kept refrigerated and within Best Used Before Date.