The measure of how good fiber works is general shown in the difference in your bowel movements. With Apple Pectin, my bowel movements came less often than with Psyllium Husks and Glucomannan. I didn't notice much of a difference between taking the apple pectin and taking no type of fiber supplement. It really did not help me.
The only good thing about the apple pectin is the size of the pills. They are smaller pills and easier to swallow than most fiber pills. Also, they don't have a bad taste. As for effectiveness, I didn't notice it.
I usually enjoy Swanson's products for the quality and price. You can normally "feel" them working and see a result with these products. They are definitely better quality than most other brands. I have to say I'm not pleased with their Apple Pectin and I will be switching to another fiber supplement made by them soon. In fact, it's on it's way now to be shipped.
I'll be trying and reviewing Swanson Vitamin's Glucomman+.