Your fiber intake could use a boost!

A low-fiber diet impacts digestion, energy, cravings, and gut health. Just one daily scoop of Core Fiber makes it easy to get the fiber you need, keeping you regular, energized, and feeling your best!

4.9 Average Rating

Word On The Street

“Our ActiveFiber blend uses both soluble and insoluble fibers to synergistically regulate your metabolism and keep your digestion smooth and steady. More than just a fiber supplement, Core Fiber is your gut's ultimate performance fuel.”

Tiana

“Our ActiveFiber blend uses both soluble and insoluble fibers to synergistically regulate your metabolism and keep your digestion smooth and steady. More than just a fiber supplement, Core Fiber is your gut's ultimate performance fuel.”

Tiana

“Our ActiveFiber blend uses both soluble and insoluble fibers to synergistically regulate your metabolism and keep your digestion smooth and steady. More than just a fiber supplement, Core Fiber is your gut's ultimate performance fuel.”

Tiana

No additives. Just fiber that works harder than your spin class.

Our ActiveFiber prebiotic blend contains 5 powerful soluble and insoluble fiber strains that work together to nourish your gut over time.

The Stats That Matter

Superior Fiber for Superior Results

Core Fiber™ isn’t for those who accept mediocrity, who want to blend in, or who are okay with being average. We’re here for the doers, the strivers, the unapologetically ambitious.

Gut Microbiome + Performance Nutrition Experts

OUR SCIENTIFIC ADVISORY BOARD

Customer Reviews

Based on 92 reviews
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D
Danny G

Core Fiber is great and has become a part of my daily routine. Its a great and easy way to help me stay regular and unlike make others, doesnt taste horrible.

E
E & Y
Easy way to add more fiber to my day

Ive been looking for an easy way to get more fiber in my diet, and Core Fibers 5-fiber blend has been a great addition. It mixes in smoothly with my morning smoothie (and even in just water, its not bad), and Ive noticed I feel less sluggish during the day. My digestion seems more regular, and I dont feel as bloated after meals. I also like that it has a mix of different fibers instead of just one type. Overall, its been simple to work into my daily routine and has made a noticeable difference for me

A
Amazon Customer
Perfect and easy fiber supplement

Works perfectly! Dissolves really easy in a glass of water. Also works great with your daily protein shake or smoothie, has no taste and blends perfectly. Highly recommend.

A
Amazon Customer
It works!

This has been working so well for me! I feel immensely better after consistently using it. Definitely plan to keep using it/recommend it to others