I take both. The calcium 3 times a day (600 mg tab-I buy mine at Walmart, cheapest I've found)and for 4 months have been regularly taking Konsyl fiber mixed with water...I have played around with that dosage, and find if I take one teaspoon twice a day..morning and night, it's best.THEN my doctor started me on Questran for my cholesterol a little over 2 months ago.So I am on 3 things that supposedly will help bind my stool. It seems to be a good combination for me. The urges are better, and I do not have the bad D days followed by constipation. I go pretty regularly every other day in the morning..no cramps or constipation. The only thing I still battle with is anxiety induced BM..not D anymore. And, the days I have my morning BM, it is more likely to be more than one trip to the bathroom. That incomplete evacuation thing.Maybe more than you wanted to know. Jeanne