You might need to try a couple different to find what works best for you. I use Citrucel (6/day) and eat veggies with medium amounts of soluble
I also eat nuts which have insoluble fiber, not good for constipation but they provide good protein.
I'm sure others will add their favorite supplements too.
In remission April 2010 after 10 years of suffering and no remission ever
Jan 2010 started SCD diet (modified to remove dairy, fruit & juices)
Bleeding stopped in 3 days, 95% remission in 5.5 months
Diet: Gluten/grain-free, fructose-free (blueberries OK), dairy free (swiss cheese OK), starch-free
I eat: Protein(meat/fish/eggs,no soy), nuts(soaked/roasted), non-starch veggies, nut-flour muffins
Daily: fish oil, Vit D3 2000 2Xday with oil/fat, veggie juice, sunflower seeds, probiotic VSL#3
homemade yogurt and some fruit OK at 5.5 month remission
Highly recommend: the book "Life without Bread" and the Specific Carbohydrate Diet