F.O.S (Fructo Oligo Saccharides)
FOS is commonly extracted from chicory roots and Jerusalem artichokes (as it occurs in relatively large quantities in these items,) but it is also found in onions, leeks, garlic, common artichokes, bananas, rye, barley, dandelion leaves, burdock roots and honey. Some presence of FOS has been noted in over 36,000 plants worldwide. FOS cannot be broken down by the human digestive system, but they can be broken down and consumed by the bacteria in the digestive tract. For this reason, FOS is considered to be a prebiotic-a substance which provides nourishment for the good gut flora.