FOS Fructooligosaccharides 1000mg - 200 TabletsSource Naturals FOS is a complex of fructooligosaccharides, a group of naturally occurring carbohydrates that can help promote the growth of beneficial flora in the gastrointestinal tract. Each tablet provides 1000mg of FOS in a convenient, vegetarian friendly formula that is free from common allergens including yeast, dairy, egg, gluten, corn, soy, and wheat. Fructooligosaccharides are long chain sugars that are indigestible by humans but serve as
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