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 33 reviews
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L
Loki
A Good way to get extra fiber at a moderate value.

I consume a lot of protein, and when you consume a lot of protein, you should consume a lot of fiber. Unfortunately, I do not get as much as much fiber as I should with solid food given my amount of protein and calorie intake. Having a fiber powder that I can mix with a protein shake, post workout drink mix, or anything else is a convenient way to get me to that goal.With that said, this does exactly the aforementioned. It mixes well with any protein shake or post workout mix that I concoct, without affecting the flavor. Additionally, sometimes the question comes up and yes, it comes with a scoop. Additionally, I did not notice any gastrointestinal discomfort of bloating after mixing with my protein drinks, so this all good in my book.The only caveat, is that this comes off as more of a boutique brand type of fiber supplement, or in other words, you are paying a price premium for it. At the current price it is more than one dollar a serving, which is a bit pricey and does not make it that budget friendly compared to other options, so keep that in mind.

R
RPI_user
Easy way to get your fiber

Survived shipping in perfect condition. I'm glad a scoop is included for quick and easy measuring. Overall, the list of ingridenents looks fine in terms of being junk-free. Seems to be a reasonable value for 60 servings in total. As with any supplement, any potential health benefits will vary from person to person. It's an easy way to get some fiber in you.

B
BobaMilk Tea
good to add to anything even sprinkle on food

I really like that the powder completely dissolves in water and doesn't change the appearance of the water at all. It tastes like nothing or smells like nothing in particular. Throw a scoop in with your matcha or smoothie. It contains good fibers including soluble if you want to lower your cholesterol. There is a generous amount in the bottle though it does not come with a scooping spoon inside. When I mix it in with cold water, the lower temps creates clumps of the powder and looks strange. I would mix it in room temp water and shake it up vigorously. Time to take care of your gut!

E
Elen Hudson
Helps me a lot

This is amazing! Good, affordable, effective

r
reviewer
Feed your gut

Fiber with extra benefits - I like that this fiber supplement also includes prebiotics. We're still learning so much about gut health and our microbiome. I'm used to a fiber-only powder (in the green canister); in comparison, this one has a slight taste to it, so I prefer to mix it into oatmeal in the morning or something else with some flavor of its own. It dissolves well.