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 84 reviews
89%
(75)
8%
(7)
0%
(0)
2%
(2)
0%
(0)
B
Brenda
Fantastic daily fiber boost

Been mixing this into my breakfast meals for the last month and am already seeing better digestion and more consistent energy throughout the day. Simple way to add more fiber without changing my routine!

E
Emily B.

This is such a great way to add fiber on a daily basis. So easy to add to oats, yogurt or smoothies and the taste is good/neutral. The powder is very dissolvable, so you don’t end up with the chunky texture of other supplements.

J
Jen Baker
Great addition to my morning smoothie

I have been using for 2 months. Started more for the combination of probiotic with fiber as an add on to my morning regimen. I agree I feel less bloated and less upset stomach episodes. Feeling more energy is probably a combination of multiple changes- more water, no caffeine and healthy nutrition!

R
Raj Patel
Good fiber supplement, clean and effective

I've been using this fiber product for a few weeks now. I mix it with my morning greens supplement and it seems to be working well. No weird tastes and goes down fine. I like how this is a 2 pack.