I would say that you need to drink more water, when you take psyllium you need the water to keep it moving through because it absorbs so much liquid.
On another note, I just felt lead to tell you about a book by a man who had Crohn's disease so bad that he looked emancipated like a concentration camp victom, he has come back from the brink of death by using probiotics and a good diet. He is giving his book (which is his testimony to how he got his health back) to anyone who calls for just the shipping and handling charge of $6.95. No I do not have anything to gain. I just want to share the offer with you. You can find more out at his website http://www.gardenoflifeusa.com
I hope this info helps you out and that you continue to receive relief from the P&B shakes, after 15 years of this you deserve it!