My herb book said you can replace psyllium with bran, I have bought oat bran before. I am not sure if this will get the muciod plaque out. Your local health food store may have some suggestions for you also.
I would give it a try in a P/B shake, but yours would be called B/B shake, mix the bran with the sonne's No. 7(which is bentonite) and see if it works for you. Even when I did the P/B (psyllium/bentonite) shake it took a few days taking a shake morning and night to see any muciod plaque.
I feel it would be worth a try, we all need to clean the colon of mucoid plaque.
If you have a problem with oats, see if there are other types of bran in powder form. Dont drink this shake with pills, it will absorb the pills and carry them right out of the body and they will have done no good. Wait at least one or two hours between shakes and pills....heyjude