Fiber GDX is a combination of whole grains that civilizations have thrived on for millennia. It contains well-researched, high-quality ingredients to create a fiber formula with both soluble and insoluble fibers. They work together to support digestive regularity, making it a valuable addition to any balanced diet.*
When your digestive sy
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Fiber Feedback
Love the amount of fiber. Greatly dislike the taste. I mix one scoop full with 8 ounces of water and glug it down (without breathing in between) first thing in the morning. It’s never a pleasant experience but I get it over with and psychologically feel good because I know I have 7 g of fiber down to start the day.
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Robyn · September 27, 2026
Great taste
I am using the orange flavored powder that I mixed with my skin and bones product. It’s my routine now in the morning and I love it! Very digestible no Chucky taste or stomach bomb of fiber. Just soothing and easy! Thank you, Dr Mary Claire Haver for everything!
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Lynne · September 25, 2026
Great product, but the flavor has changed
I've been ordering Fiber GDX on and off for over a year and had always really enjoyed it, especially the taste. Unfortunately, with my most recent order, the flavor seems noticeably different from what I remember. I'm not sure if the formula or flavoring has changed, but I definitely preferred the previous version. It's disappointing because the taste was one of the reasons I kept coming back to this product. I still like the fiber blend itself, but I hope the original flavor returns.