Harvard Health Tips

Fiber supplements and other medications

A fiber-rich diet is healthy and won't affect medications. Fiber supplements are a different story. Fiber goes through the digestive system without getting digested or absorbed. If there's lots of fiber and medication in the intestine at the same time, it's possible that the medication may get swept along with the fiber, so it will be excreted instead of fully absorbed. If you are taking a fiber supplement, make sure your doctor knows about…

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