Fiber. It supposedly cleans out your digestive system and gives you gas if your not used to it. We have a free Canadian sample on the Fiberiffic fiber supplement to help keep you internal plumbing working. Serious inquires only as Fiberiffic only has limited quantities of the stuff. We found this deal a while back and it’s still going strong for more samples.
If seriously interested insert this url: http://www.fiberrific.com/fiberrific_products.html and hit the get sample button in the middle right to get the request form.