Healtharena inulin 300 g healtharena inulin is the most effective type of inulin available it consists of 90 native chicory inulin and 10 fos this balance gives the most optimum benefit to digestion the fos works on the right side of the colon helping the healthy bacteria to multiply then the native chicory inulin reaches the left side of the colon as it has a longer chain length healtharena inulin works on both the right and left side of the colon