It's a combination of the Bentonite AND the Psyllium...both swell when wet.
Are you adding a Tablespoon of Psyllium AND a Tablespoon of Bentonite for each dose? and dosing three times daily? If so, that's MORE than enough to do it. I'd probably back off to one TEASPOON of each "per dose" if I were you. And might consider giving it a rest for a day or two.