Several of you have written about one complication - constipation. As so many others have suggested alternative remedies I have found one as well.
Cold Milled Super Flax Meal made by Natural Brand. It is sold at GNC. One quarter cup mixed well into 4 ounces of any sort of juice drink you prefer each night prior to bed. I can almost guarantee you each morning you will have a soft and substantial movement which for me was a major, positive change.
The Flax Meal has the added benefit of keeping your cholesterol levels in check. This is actually it's main purpose.
Just wanted to pass this along....