Fiber has never been built like this.
Your gut isn’t one environment. It’s a series of them.
DIFFERENT BACTERIA. DIFFERENT CHEMISTRY. DIFFERENT NEEDS.
Most fiber supplements ignore all of it. One ingredient. One speed. Done.
We designed for every layer, so you don’t have to think about any of them.
That gap costs your gut, metabolism, and immune system every single day.
*American Society for Nutrition
Eleven fibers. Because your bacteria don’t all eat the same thing.
The single strongest predictor of a healthy gut isn’t any one food. It’s the variety of plant types consumed in a week.
Greater diversity in food = More diverse SCFA-producing bacteria
Why? Different bacteria need different fuel. Resistant starch feeds different species than acacia or pea fiber. A seed fiber feeds different species than a tree bark extract. No single ingredient supports the full microbiome.
Research Confirms:
75% of people taking a single fiber saw a measurable decrease in overall gut bacteria diversity.
Source: Tan et al., Gut Microbes, 2023. "approximately 75% of the participants showed a decrease in observed ASV" after inulin supplementation.
26 out of 41 clinical trials showed no significant SCFA increase from single-fiber supplementation.
Vinelli et al., "Effects of Dietary Fibers on Short-Chain Fatty Acids and Gut Microbiota Composition in Healthy Adults: A Systematic Review," Nutrients, 2022.
Fiber blends supported over 2 times more beneficial bacterial species than the best single fiber tested
Cantu-Jungles et al., "Systematically-designed mixtures outperform single fibers for gut microbiota support," Gut Microbes, 2025.
Every layer of your gut, built into the formula.
InfiniFiber combines 11 fibers plus a targeted probiotic, with 12g of dietary fiber across soluble, insoluble, and non-fermentable fractions to support structure, motility, and microbial output.
Solnul® Resistant Potato Starch (RS2)
Distal-colon butyrate production, gut barrier and anti-inflammatory support with slow, steady fermentation and minimal proximal gas
FIBER TYPE: 0% soluble / 100% insoluble resistant starch (RS2)
FERMENTATION SPEED: Slow, distal-colon focused
STRAINS FED: Bifidobacterium adolescentis, B. pseudolongum, Eubacterium rectale, Roseburia spp., Faecalibacterium prausnitzii, Clostridium butyricum, Akkermansia muciniphila (via cross-feeding)
SCFAs: Strong butyrate plus acetate; minimal proximal gas
* In a randomized, placebo-controlled human study, Solnul RS2 significantly lowered circulating serum histamine and improved markers of gut barrier function, helping support histamine resilience from the inside out. (source)
Purified Alpha Cellulose
Mechanical bulk and stool form support, adding structure and motility without fermentation load or extra gas.
FIBER TYPE: 0% soluble / 100% insoluble, non-fermentable
FERMENTATION SPEED: Non-fermentable
STRAINS FED: Minimal direct feeding; indirect benefits via improved transit time and water content
SCFAs: Negligible; focuses on bulk, structure, and motility
Acacia Fiber (Gum Arabic)
Broad-spectrum prebiotic with excellent tolerability supporting bifido, lacto, and key butyrate producers.
FIBER TYPE: ~100% soluble / 0% insoluble, very low-viscosity
FERMENTATION SPEED: Moderate
STRAINS FED: B. longum, B. animalis, B. breve, L. acidophilus, L. paracasei, Bacteroides spp., Faecalibacterium prausnitzii
SCFAs: Acetate and propionate; butyrate via cross-feeding
Partially Hydrolyzed Guar Gum (PHGG)
Supports stool form, butyrate producers, and metabolic markers with excellent tolerance and low viscosity.
FIBER TYPE: ~100% soluble / 0% insoluble, low-viscosity
FERMENTATION SPEED: Slow–moderate
STRAINS FED: B. longum, F. prausnitzii, Roseburia spp., Ruminococcus spp., Parabacteroides distasonis, Bacteroides spp., Akkermansia (via cross-feeding)
SCFAs: Balanced acetate, propionate, and butyrate with strong butyrate support
Oat Hull Fiber
High-bulk insoluble fiber for stool mass, water binding, and peristalsis with minimal fermentation.
FIBER TYPE: ~5% soluble / 95% insoluble
FERMENTATION SPEED: Practically non-fermentable
STRAINS FED: Very limited direct feeding; primarily physical bulk
SCFAs: Minimal; mostly non-fermentable fraction
Larch Arabinogalactan
Immune-modulating prebiotic with a strong propionate signal supporting Akkermansia and bifido clusters.
FIBER TYPE: ~100% soluble / 0% insoluble
FERMENTATION SPEED: Moderate
STRAINS FED: B. longum, B. bifidum, B. animalis, Bacteroides thetaiotaomicron, Gemmiger, Blautia, Akkermansia (via cross-feeding)
SCFAs: Acetate and propionate; butyrate via cross-feeding
Fenugreek Fiber (Galactomannan‑Rich)
Viscous galactomannan for glycemic modulation and satiety, with targeted support for key Lactobacillus and bifido species.
FIBER TYPE: ~67% soluble / 33% insoluble
FERMENTATION SPEED: Moderate
STRAINS FED: Lactobacillus reuteri, L. johnsonii, Bifidobacterium spp., other Lactobacillus spp.
SCFAs: Mainly acetate with some propionate and butyrate via cross-feeding
Organic Pea Fiber
Propionate-focused legume fiber that supports metabolic health, GLP‑1, satiety, and glycemic control.
FIBER TYPE: ~43% soluble / 57% insoluble
FERMENTATION SPEED: Moderate
STRAINS FED: Prevotella copri / Prevotellaceae, Lachnospiraceae, Bifidobacterium spp.
SCFAs: Strong propionate with acetate; some butyrate via cross-feeding
Chia Seed Powder
Adds mucilage and texture for stool lubrication and mouthfeel with minor mixed fiber support.
FIBER TYPE: ~10% soluble / 90% insoluble
FERMENTATION SPEED: Moderate (minor contributor)
STRAINS FED: Broad, low-level support for resident SCFA producers; not a primary driver at this dose
SCFAs: Mainly acetate with smaller propionate and butyrate contribution
Apple Pectin Powder
Rapidly fermenting soluble pectin that primes proximal SCFA and incretin responses while feeding bifido species.
FIBER TYPE: 100% soluble / 0% insoluble
FERMENTATION SPEED: Moderate–fast (proximal colon)
STRAINS FED: B. longum, B. breve, Lactobacillus spp., Faecalibacterium prausnitzii and other butyrate producers via cross-feeding
SCFAs: Rapid acetate and propionate; butyrate via cross-feeding
Pumpkin Seed Powder
Whole-matrix seed powder providing minor fiber and nutrients that round out texture and microbiota support.
FIBER TYPE: ~40% soluble / 60% insoluble (approx.)
FERMENTATION SPEED: Moderate (minor contributor)
STRAINS FED: General microbiota support at low magnitude
SCFAs: Mixed SCFA profile, mostly acetate
LactoSpore® Bacillus coagulans MTCC 5856
Heat-stable, spore-forming probiotic that survives stomach acid and cross-feeds butyrate producers via lactate and acetate.
TYPE: Spore-forming lactic acid probiotic (not a fiber source)
DOSE: 133 mg delivering 2 billion CFU per serving
SCFAs / METABOLITES: Produces lactate and acetate that can be cross-fed into butyrate and propionate by other taxa
PRIMARY ROLE: Synergizes with the prebiotic matrix to support GI comfort and SCFA networks
In a randomized, placebo-controlled human study, Solnul RS2 significantly lowered circulating serum histamine and improved markers of gut barrier function, helping support histamine resilience from the inside out. (source)
Slow. By design.
Most fibers break down fast. That’s the problem. Rapid fermentation produces a burst of gas, a spike of bloating, and a short window of benefit. Then it’s over. The bacteria that needed it most never got fed.
We weighted InfiniFiber toward slow, sustained fermentation. Slow-fermenting fibers stay active longer. They feed more species over more time. They produce steadier output. Less gas. Less bloating. More consistent results.
Formulated with low‑FODMAP–friendly fibers (no inulin or FOS), designed for better tolerance in sensitive guts.
Rapid Activation, Not Gas
Standard fibers can ferment hard in one spot and cause immediate bloating. We paid special attention to limiting the availability of fast fermenting fibers that cause rapid gas production in the proximal colon.
Sustained Prebiotic Release
As the environment changes, the fiber profile shifts. This layer feeds transitional-zone bacteria with prebiotic precision, keeping fermentation moving instead of stalling in the upper gut.
SCFA Fuel in the Distal Colon
Where most fibers drop off, InfiniFiber’s structure keeps going. It delivers slow fermenting fiber, via Solnul, which makes it all the way to the distal colon.
The Speed Gradient
Fast-fermenting fiber.
Fast fermentation is why people quit fiber supplements. We made it the smallest fraction of the formula.
Slow-fermenting fiber.
This is where the sustained benefit comes from.
| SPEED | AMOUNT | KEY FIBERS |
|---|---|---|
| Fast | 0.23 g | Apple Pectin |
| Moderate | 4.5 g | Acacia, Larch, Pea, Fenugreek |
| Slow | 4.3 g | PHGG, Resistant Potato Starch (RS2) |
| Non-fermentable | 3.2 g | Cellulose, Oat Hull |
The InfiniFiber Difference
Optimized for propionate.
The metabolite most fiber supplements underdeliver.
When you rely on single-ingredient fibers, you miss out on the full picture. Research shows 75% of people taking a single fiber source experienced a reduction in gut bacteria diversity, while carefully designed fiber blends supported over two times more beneficial bacterial species; including unique strains no single fiber could reach alone. (Tan et al. 2023; Cantu-Jungles et al. 2025)
Bacteria ferment fiber into short-chain fatty acids (SCFAs). These are the actual molecules your body uses. Not all of them do the same thing. Most fiber supplements produce a generic mix, heavy on butyrate. We formulated for a different output.
Supplement
System
That difference matters.
Propionate is the SCFA most directly linked to satiety hormone secretion, liver fat reduction, and cardiovascular protection.
We didn’t optimize for one SCFA. We balanced all three. Most fibers skew heavily toward a single SCFA output. We paired propionate-emphasizing fibers (Pea, Larch AG, Acacia) with butyrate-emphasizing fibers (Solnul RS2, PHGG) and acetate contributors (Fenugreek, Pectin, Chia, Pumpkin). The result is a controlled ratio across all three metabolites, not just heavy in one.
| SCFA | Daily Yield | What it does |
|---|---|---|
| Propionate | 1.6–1.8 g | Satiety (GLP-1), cholesterol, blood-brain barrier |
| Butyrate | 1.3–1.5 g | Gut barrier repair, anti-inflammatory, colonocyte fuel |
| Acetate | 3.2–3.5 g | Systemic energy, lipid metabolism |
Most typical supplements produce a less-balanced mix that is heavy on butyrate and underdelivers on propionate. We recognized the importance of an optimized SCFA profile, pairing specific fibers to achieve a controlled ratio across all three metabolites. Our formula delivers a 25–28% propionate ratio compared to the 15% found in standard supplements, providing superior support for satiety and metabolic health.
Three jobs.
One supplement.
Fiber does three things. Most products optimize for one. InfiniFiber is tuned for all three.
FEED
PROTECT
MOVE
Then we added something alive.
Research proves adding a targeted probiotic alongside prebiotic fiber produces results neither achieves alone.
Prebiotic Fiber
The Substrate
LactoSpore®
Bacillus coagulans MTCC 5856
Synbiotic
They work as a unit.
LactoSpore® Bacillus coagulans MTCC 5856 · 2 Billion CFU
Spore-forming. Survives stomach acid and shelf storage. Validated in RCTs for bloating (p < 0.001), IBS relief, and improved mood.
11 fibers. 1 Probiotic.
4 fermentation speeds.
40+ species fed.
One serving.
Infinite results.
It wasn’t designed to be the simplest fiber supplement.
It was designed to be the best.
The Best Time to Start
Experience Total-Body Balance
Choose your InfiniFiber supply and start rebuilding your gut, brain, and metabolic foundation with a daily, science-backed synbiotic fiber ritual.
30 Servings
Great for first-time InfiniFiber users
- Perfect 30-day trial to feel the difference
- 11 clinically relevant fibers + 1 targeted probiotic
- Supports digestion, mood, and metabolic health
- Free US Shipping
60 Servings
Built for long-term gut & brain support
- 2-month supply for deeper, more stable results
- Ideal for locking in fiber, SCFA, and mood benefits
- Best price per serving
- Free US shipping
Most people notice smoother digestion within the first 1–2 weeks, with compounding benefits over 4–8 weeks of consistent daily use.