Only SmartFiber is smart fiber.

All fiber is not the same, and it doesn’t work in your system the same way, either. Fiber can be categorized by two distinct characteristics.

Insoluble or soluble

Insoluble fiber doesn’t absorb water; soluble fiber does. Both help material move through your digestive tract, but soluble fiber can help give stool a softer, bulkier consistency that’s easier to pass.

Fermentable or non-fermentable

Many soluble fibers ferment in the large intestine, creating unnecessary, and uncomfortable, gas.

SmartFiber is smart fiber therapy.

Citrucel with SmartFiber is proven to help restore and maintain regularity, and it’s also the only fiber that won’t ferment to cause excess gas*. Our scientists found a way to combine the benefits of a soluble fiber and a non-fermentable fiber to create SmartFiber. Only SmartFiber gives you the fiber benefits you want without causing excess gas*. And only Citrucel has it.