You know that fiber is a necessary part of your diet but odds are, you're not getting enough. Think all fiber is created equal? Think again! By using just the right kind of SmartFiber that's less harsh on your system, Citrucel helps you stay regular without having to suffer from the harsh side effects. By using fiber that is derived from cellulose, Citrucel promotes a healthy digestive system without bloating or gas. Get on a healthier track with SmartFiber.