Some people can not use fiber products because according to Ayurveda and Chinese medicine they have "dry"bodies. They will get constipated instead.
I was the same for the first 2 years, but with liverflushing, you need improved bile for disgestion, and Oxypowder I now don't need he Oxypowder anymore.
Here is an old discussion, from my beginning time, about colon health.It is good to read the whole thread.