Hi Beth @elizabethbartholomew, I've had a long running battle with constipation this past year and I think it has been fiber related but I'm not sure. About a month or so I started taking 2 tsps of Optifiber (Costco's version of Benefiber) with a 8 oz glass of water 2 to 3 times daily when I take my other supplements and medications. This has really helped with my constipation problem. I also try to eat more high fiber foods which I have not been very good at in the past.