I had flat stools in both shapes: one flat side and two flat sides, as a ribbon, but they was not so thin, really they was 1" x 1/2" approx.
When I started to take Metamucil, my stools recovered its normal shape and size. They are now fully rounded and about 1 1/4" thick.
So, my flat stools was not the result of a partial obstruction, because, as you said, Metamucil is not magic.
I guess I have IBS, but I do not have all IBS symptoms, however some IBS tests says I can have IBS. Perhaps it is a simple bowel motility disorder. |