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Verified by IngredientMD/Microbiome Labs/MegaSporeBiotic
VERIFIED BYingredientMD

MegaSporeBiotic.

Backed by human trialsMicrobiome Labs, verified Oct 2026Formula verified. Independently reviewed.Independent review. Not commissioned by Microbiome Labs.

Bacillus subtilis HU58 is the lead active here, studied most for a balanced gut microbiome. 6 human studies on Bacillus subtilis HU58 back this formula, each one cited. Who it fits: for everyone, adults.

Full label disclosure
5Active ingredients12Human studies
MegaSporeBioticVerified by IngredientMD
Microbiome LabsIngredientMD
The verdict
Backed by human trials
For everyone, adults.
How we verify

The brand submits the formula. We read the supplement facts panel and weigh dose, form and synergy against the clinical evidence. Labs test. IngredientMD verifies. The fee pays for review time, never for the outcome.

The formula
Bacillus indicus HU36: A balanced gut microbiomeSupporting role
Bacillus subtilis HU58: A balanced gut microbiomeKey driver
Bacillus coagulans SC208: A balanced gut microbiomeWell studied
Bacillus licheniformis: A balanced gut microbiomeSupporting role
Bacillus clausii SC109: A balanced gut microbiomeSupporting role

How we read this product

Source: Supplement facts
Supplement Facts panel for MegaSporeBiotic
  1. 01
    We read the label.

    The panel on the left is the one we evaluated, line by line.

  2. 02
    Every active, separately.

    All 5 actives checked against the clinical evidence: dose, form, and what the research actually shows.

  3. 03
    Then the formula as a whole.

    Doses, ratios, and how the ingredients work together. That assessment is the verdict above: "Backed by human trials".

  4. 04
    Earned, not bought.

    The verdict is public and identical whether or not a brand pays. A formula that does not clear the bar gets nothing.

Read by the engine against 2.1 million data points from clinical trials, PubMed and more than a hundred vetted sources. No individual reviewer is named or implied.

The receipts

12
Human studies

Inside the formula

Bacillus indicus HU36
A balanced gut microbiome
Supporting role
Bacillus subtilis HU58
A balanced gut microbiome
Key driver
Bacillus coagulans SC208
A balanced gut microbiome
Well studied
Bacillus licheniformis
A balanced gut microbiome
Supporting role
Bacillus clausii SC109
A balanced gut microbiome
Supporting role
In context

The gap this formula speaks to.

Public health figures the engine matched to this formula's ingredients. Reported by their source, cited and dated, never written by the brand.

This formulaNHANES 2017-2018, published 2021

57.6%

During 2017 to 2018, 57.6% of US adults aged 20 and over reported using a dietary supplement in the past 30 days.

CDC National Center for Health Statistics
The people it speaks toFieldwork 2017 to 2018

58% of the recommended fiber intake

was reached on average by US consumers, who ate 8.1 grams of fiber per 1,000 calories in 2017 to 2018 versus the 14 grams recommended, per USDA Economic Research Service analysis of federal food consumption survey data.

USDA Economic Research Service, 2023
The people it speaks toFieldwork March 28 to 29, 2023

34% of US adults

aged 18 and over report they experience abdominal discomfort or pain at least a few times per month, with women about twice as likely as men to report it several times weekly, per a 2023 Ipsos poll conducted for MDVIP.

Ipsos, 2023
15 more
Daily use

59 to 66 days

was the median time it took adults to make a new daily health habit automatic across the studies a 2024 review pooled, with individuals ranging from 4 to 335 days.

Systematic review and meta-analysis, 2024
Bacillus coagulans SC208

Randomised trial, 2023

In this randomised double-blind study the authors reported improvement in functional gas and bloating scores with the probiotic compared with placebo. Note that the strain studied was Bacillus coagulans MTCC 5856, a different strain from GBI-30, 6086, so it is species-level rather than strain-level evidence.

Medicine
Bacillus coagulans SC208

Randomised trial, 2019

The authors reported fewer self-reported upper respiratory and gastrointestinal tract symptoms in the group receiving the Bacillus coagulans strain than in the control group over the study period.

Food research international
Bacillus clausii SC109

Randomised trial, 2024

Oral spore-based Bacillus supplementation altered post-prandial expression of gastrointestinal-associated mRNA in blood. These are gene-expression markers rather than clinical outcomes, and Bacillus clausii was one strain inside a multi-strain product.

Biomedicines
Bacillus subtilis HU58

Randomised trial, 2026

A spore-forming probiotic blend was reported to change bowel habit measures and self-reported physical well-being in adults with infrequent bowel movements. Bacillus subtilis is named as a blend component rather than tested alone.

PLoS One
Bacillus indicus HU36

Systematic review, 2024

Across randomised trials the review examined whether probiotic supplementation changed intestinal permeability measures in adults carrying excess body weight, and reported inconsistent findings across studies and markers.

Advances in Nutrition
Bacillus clausii SC109

Open-label trial, 2023

In adults with a mild acute illness, ongoing use of a five-strain spore-forming Bacillus product was reported to improve the measured clinical course compared with the comparison condition. Because the product held five strains, the contribution of any single strain including Bacillus clausii cannot be separated out.

Nutrients
Bacillus subtilis HU58

Randomised trial, 2020

In female collegiate athletes doing offseason resistance training, Bacillus subtilis supplementation was reported to affect body composition measures, with the authors framing the findings as preliminary.

Journal of Strength and Conditioning Research
Bacillus subtilis HU58

Randomised trial, 2025

A high-dose multi-strain Bacillus probiotic was linked to a 25 percent drop in antibiotic use, a 2 day shorter treatment period, in the children studied.

Scientific Reports
Bacillus subtilis HU58

Randomised trial, 2026

In 60 adults on dual antibiotics, adding a probiotic blend that includes Bacillus subtilis was linked to shifts in gut microbiota and symptom scores over 8 weeks.

Tissue Engineering and Regenerative Medicine
Bacillus subtilis HU58

Randomised trial, 2026

In a trial of 78 adults, probiotics including Bacillus subtilis were linked to smaller shifts in oral microbiota over a 14 day antibiotic course than antibiotics alone.

Frontiers in Cellular and Infection Microbiology

Population figures from public health data. Context for the category, not a statement about any individual and not a claim about this product.

What this formula earned

Every one of these is a fact the engine could ground.

Each line below was derived from this formula's own record at the time of verification. Nothing here was written by the brand, and nothing can be added that the evidence does not carry.

  • Studied in people6 human studies on Bacillus subtilis HU58 back this formula, each one cited.
  • A mechanism that is settledHow Bacillus indicus HU36 and Bacillus subtilis HU58 work is settled pharmacology.
  • Studied together, not just separatelyBacillus indicus HU36 and Bacillus subtilis HU58 have been studied together, not only separately.
  • Recent work on the recordThe most recent study on this record was published in 2025.
  • Why this formatIt is a capsule, so the amount per serving is fixed and travels without measuring.
  • The exact form, describedThe label names its forms exactly: Named strain material, Bacillus subtilis, lyophilised spores, Bacillus coagulans GBI-30, 6086 spore preparation. The record says what each one is and what it suits.
  • Where it comes from and how it is madeBacillus indicus HU36 is made by fermentation.
  • Positions this formula already qualifies forThis formula already qualifies for positions beyond the one it is sold into, on the evidence it carries.
  • A position nobody is holding yetSome of those positions are ones almost nobody is selling to yet.
What the trials show

What the trials show about timing.

Time-to-effect windows the engine read from the trial record. Each is a window a named study measured, cited and dated, never written by the brand.

  • Bacillus subtilis HU584 to 8 weeks in the one signal the trial reportsBuilds with daily use

    In an 8-week randomized placebo-controlled trial of 100 healthy adults with functional bloating, Bacillus subtilis ATCC 122264 did not change overall gas-symptom scores, and in post-hoc analyses among women, belching severity decreased by week 4 and flatulence by week 8.

    LeMoire 2025PMID 39929203
    Early

Windows measured in the cited trials. Context for how the active behaves over time, not a statement about any individual and not a claim about this product.

General timing

How each ingredient usually behaves over time.

Five ingredients, from each one's own page.

  • Bacillus indicus HU36About one to three weeks

    Digestive changes with spore probiotics generally show up over one to three weeks of daily use. Since the species is transient, effects track continued intake.

    Its own page, the plain answer on timing

  • Bacillus subtilis HU58About two to four weeks

    Most people describe digestive changes across the first two to four weeks. Each dose works fresh, because the organism passes through rather than settling in.

    Its own page, the plain answer on timing

  • Bacillus coagulans SC208Two to four weeks

    Of daily doses is where digestive comfort shifts. The spore has to germinate before anything happens, so day one is quiet by design.

    Its own page, the plain answer on timing

  • Bacillus licheniformisAbout one to three weeks

    Digestive changes usually show up across one to three weeks of daily use. Spores germinate fresh with each dose, so it builds steadily rather than landing all at once.

    Its own page, the plain answer on timing

  • Bacillus clausii SC109

    Digestive changes usually land within a week or two of daily doses. Around a course of antibiotics the point is what does not happen, which is harder to date.

    Its own page, the plain answer on timing

How each ingredient usually behaves over time, from its own page on IngredientMD. General timing for the ingredient, not a measurement of this product.

Format

Capsule

It is a capsule, so the amount per serving is fixed and travels without measuring.

Best forMost standard doses, and anywhere a short, clean label is the point.

Questions shoppers ask

Is MegaSporeBiotic independently verified?
Yes. IngredientMD reviewed this formula independently and verified it in Oct 2026. The verdict is earned, not bought: brands can't edit or purchase it.
What's in MegaSporeBiotic?
MegaSporeBiotic is built on Bacillus indicus HU36, Bacillus subtilis HU58, Bacillus coagulans SC208, Bacillus licheniformis, Bacillus clausii SC109. Each ingredient links to its own evidence page on IngredientMD.
Who is IngredientMD?
IngredientMD is an independent supplement-science platform. We analyze ingredients and formulas against clinical research, and we verify products only when they clear our bar. Labs run the tests. We review the results.
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These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This record is not medical advice. Always consult your healthcare provider before starting any supplement regimen.

Independent review by IngredientMD, not commissioned by Microbiome LabsWork at Microbiome Labs? This verification is yours to claim →