I take 1 s/w heaping tsp of the generic benefiber, daily, just before going to bed. Works wonders for me, helped get me regulated. I also have to take 2 lomotil twice daily. BTW,it takes a few months to get regulated, no matter what you try. I learned the hard way, thought I knew more than my doc. You know how we all sometimes get, especially when the answer seems so common or simple.
Also, I'm a country boy & love eating a big bowl of soup beans & cornbread. Not wanting to have diarrhea, I ask my doc about skipping my fiber on days I had that meal. He told me to never skip it, no matter what I had to eat, and no matter how much fiber content was in my meal. Works for me!
Lee