Fiber+ supports gut health, blood sugar, and performance with resistant starch, psyllium, and rice bran. NSF Certified for Sport® and science-backed.
Not All Fiber Is Created Equal: Why Fiber+ Changes the Game
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For decades, fiber supplements have been positioned as digestive insurance, something you take to be “regular.” As a result, most fiber products were built for relief, not results. But the science tells a different story.
Fiber isn’t just about regularity—it supports the gut systems that influence nutrient absorption, metabolic signaling, and how consistently your energy & focus show up each day.
That “off” feeling – the post-meal slump, inconsistent energy, stalled progress despite doing everything right – isn’t random. It’s often a signal that a foundational system isn’t being supported. That system is your gut.
The gut microbiome plays a central role in how effectively we utilize the food we eat, the supplements we take, and the training we log. When gut health isn’t adequately supported, even well-dialed nutrition and training may not deliver their full return. Fiber is one of the most underutilized levers in performance nutrition. But not all fiber supplements are built to support the gut in the same way.
Fiber Quality—Not Quantity—Is the Real Differentiator
More than 97% of women and 90% of men fail to meet daily fiber recommendations (25g/day and 38g/day, respectively). Nor do they get the fiber diversity they need for full benefits. Higher fiber intake is associated with ~20% lower all-cause mortality and nearly 40% lower cardiovascular mortality. Every additional 5g/day of fiber intake has been associated with a 7% lower risk of all-cause mortality, so the case for fiber quantity is strong.
But here’s what’s often overlooked: fiber is not a single ingredient. It’s a category with different physiological effects. There are three primary functional types:
Soluble fiber: Forms viscous gels, slows digestion, moderates blood sugar, and can lower LDL cholesterol.
Insoluble fiber: Adds bulk and supports smooth transit.
Resistant starch (a fermentable fiber): Escapes small intestinal digestion and is fermented by gut bacteria into short-chain fatty acids (SCFAs) like butyrate.
Each type plays a distinct role, which is why fiber diversity matters. However, most supplements focus on a single fiber source–often psyllium–without incorporating fermentable resistant starch, limiting their ability to support the full spectrum of gut and metabolic benefits.
Most Fibers Are Optimized for Digestion—Not Performance
The majority of fiber supplements on the market were formulated around one goal: relieving constipation. That’s why they typically:
Rely heavily on one fiber source (often psyllium)
Focus on stool frequency as the primary outcome
Include artificial sweeteners, flavors, or additives
Overlook the microbiome-performance connection
But fiber’s role extends well beyond regularity. Research shows the gut microbiome can influence:
Metabolic efficiency and blood sugar regulation
Systemic inflammation that can affect recovery
Absorption of key nutrients
Maintaining a resilient gut barrier
High-fiber diets increase microbial diversity and the abundance of short-chain fatty acid–producing bacteria. SCFAs like butyrate support gut barrier integrity, reduce inflammation, and improve metabolic signaling. When your gut isn’t supported, the food you eat, the supplements you take, and the training you endure may not deliver their full potential.
As Jeff Byers, our co-founder and CEO, says: “While people have become increasingly mindful about gut health's connection to overall performance, the products available haven't kept pace with the science. Fiber+ treats your gut like the engine it is, not a problem to fix.”
Fiber+ Was Designed to Solve the Gaps
Fiber+ was built as a 3-in-1 fiber system to support Performance for Life™. It’s a comprehensive fiber system, with each serving providing 6 grams of fiber from:
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Solnul® Resistant Potato Starch (Prebiotic Resistant Starch): Fermented in the colon into short-chain fatty acids like butyrate, which:
Strengthen the gut barrier
Improve insulin sensitivity
Support metabolic health
Increase beneficial bacteria such as Bifidobacterium
Psyllium Husk (Soluble Fiber): Supports stool hydration, slows carbohydrate absorption, and helps moderate blood sugar response.
Rice Bran (Insoluble Fiber): Adds bulk and promotes smooth, comfortable transit.
In a randomized, placebo-controlled clinical trial, Solnul® resistant potato starch demonstrated a clinically validated prebiotic effect, increasing beneficial bacteria and improving digestive comfort with high tolerability.
This is what most fiber supplements miss. While they might support bowel movement, Fiber+ supports the entire microbiome—and while others might temporarily solve symptoms, Fiber+ supports your entire system.
Built to The Momentous Standard®
As with every product in our portfolio, Fiber+ adheres to The Momentous Standard®, which means:
Flavored only with real Cinnamon Bark Powder using our single-ingredient Pure Flavor System™
No artificial or “natural” flavors
No gut-disruptive sucralose
One of few fibers NSF Certified for Sport®
Developed in partnership with Arnold Schwarzenneger & the experts at The Pump Club
How to Use Fiber+ for Best Results
Your microbiome adapts the same way muscles do — gradually, with consistent stimulus.
Most digestive discomfort happens when intake increases too quickly. If your fiber intake has been low, jumping straight to a full dose may lead to temporary bloating—not because fiber is harmful, but because your microbiome hasn’t adapted yet.
Best Practices
Start low, build gradually: Begin with 3g (1 scoop) and increase to the full 6g serving over 1–2 weeks. You can titrate in 3g increments to assess tolerance.
Standard serving: 2 scoops (6g fiber) daily.
Take with food: Mix into meals, smoothies, or shakes. Post-workout or evening intake often works well, especially if you train intensely earlier in the day.
Hydrate adequately: Fiber requires fluid. Insufficient hydration can increase gastrointestinal stress.
Be consistent: Benefits depend on cumulative exposure. Daily intake supports microbial adaptation and sustained SCFA production.
Supplement timing note: Avoid taking within 2 hours of iron supplementation.
Gut Health Isn’t Guesswork
Matt Chorney Momentous VP of Product
Matt Chorney is Vice President of Product at Momentous, a science-driven supplement company, and the company’s first employee. He leads product strategy and development, overseeing procurement, manufacturing, and cross-functional operations to bring high-quality, performance-focused supplements to market. An avid runner and marathoner, Matt brings the same discipline and long-term mindset from endurance training into building and scaling impactful products.
