I have been taking Metamucil daily for a year now. Initially, I took 1 tablespoon/day and could not believe the positive difference that it made. Of course, being the kind of person I am, I decided to up that to 2 tablespoons/day, figuring the more the better. Wrong! It was too much and I became gassy, crampy and just generally uncomfortable.
You may have to adjust your dosage...1 tablespoon might be too much for you, or maybe take 1 tablespoon every other day and see what happens.
I swear by this stuff, though...it has made an amazing difference for me.