ByDr. Brennan Commerford, Chiropractic Physician·Last reviewed: April 2026
All Ingredients
Probiotic1 form

Bacillus subtilis (100 Billion CFU/G)

Preferred Form
100 Billion CFU/G
Bioavailability
S1
Evidence Level
Moderate Evidence

Quick Answer

What is the best form of Bacillus subtilis (100 Billion CFU/G)?

100 Billion CFU/G is our top-ranked form of Bacillus subtilis (100 Billion CFU/G), classified as T1 Preferred with S1 bioavailability. We compared 1 forms in our formulary.

Our recommendation: 100 Billion CFU/G

1forms compared

All Forms of Bacillus subtilis (100 Billion CFU/G)

FormTierBioavailabilityDose RangeUnit
100 Billion CFU/GT1 PreferredS1

Bioavailability by Form

S1 — Best
100 Billion CFU/G

What is Bacillus subtilis (100 Billion CFU/G)?

Bacillus subtilis (100 Billion CFU/G) is a Probiotic supplement available in 1 form.

Not all forms of Bacillus subtilis (100 Billion CFU/G) are equal. The form you choose determines how much Bacillus subtilis (100 Billion CFU/G) actually reaches your tissues, and the difference between the best and worst forms can be substantial. Bacillus subtilis is a well-researched spore-forming probiotic that remains dormant and stable through processing and stomach acid, germinating in the intestines where it supports healthy microbiome composition. At 100 Billion CFU/G, research suggests it promotes beneficial gut flora and healthy immune response.

Forms of Bacillus subtilis (100 Billion CFU/G) Compared

Bacillus subtilis (100 Billion CFU/G) Preferred (T1 Preferred) has a bioavailability rating of high (S1 — best tier). Typical dose range: not yet documented in our database.

What the Research Shows

Bacillus subtilis is a versatile spore-forming probiotic that produces multiple antimicrobial compounds (surfactin, iturin) supporting a healthy gut microbiome. At 100 billion CFU/g, it provides clinically relevant colony counts with exceptional environmental stability. Research supports its role in gut immune modulation and microbiome diversity.

How to Choose the Right Form

Bacillus subtilis (100 Billion CFU/G) is classified as T1 Preferred in the FormulaForge formulary — our top recommendation for Bacillus subtilis (100 Billion CFU/G). It carries a bioavailability rating of high (S1 — best tier), meaning more of the active compound reaches your tissues per dose unit compared to lower-tier forms.

When choosing a Bacillus subtilis (100 Billion CFU/G) supplement, look for the S1 (best absorption) bioavailability tier on the label or formulary listing. T1 Preferred forms have the strongest research-backed evidence for efficient absorption.

Other forms may be appropriate depending on individual goals, cost considerations, and your healthcare provider’s guidance. The best form for you depends on your specific health needs.

Dosing & Safety

For Bacillus subtilis (100 Billion CFU/G), the typical dosing range is not yet documented in our database. Individual dose requirements vary based on health goals, body weight, and existing nutrient intake.

Side Effects: Specific side effect data for these forms is not yet documented in our database. In general, consult your healthcare provider regarding tolerability at higher doses.

These statements are based on structure/function research and have not been evaluated by the FDA. This information is not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare provider before starting or changing a supplement regimen.

Dosing Guidance

Dosing information not yet available for this ingredient.

Frequently Asked Questions

What is the best form of Bacillus subtilis (100 Billion CFU/G)?
Bacillus subtilis (100 Billion CFU/G) is the T1 Preferred form of Bacillus subtilis (100 Billion CFU/G) in the FormulaForge formulary, reflecting research-backed evidence for superior bioavailability (high (S1 — best tier)). This classification is based on published absorption studies and clinical evidence quality. The best form for you depends on your individual health goals and your healthcare provider's recommendations. Always consult a qualified healthcare provider before starting, stopping, or adjusting any supplement regimen.
How much Bacillus subtilis (100 Billion CFU/G) should I take daily?
Dosing information for Bacillus subtilis (100 Billion CFU/G) is being compiled in our database. Individual dose requirements vary based on health goals and existing nutrient intake. Always consult a qualified healthcare provider before starting, stopping, or adjusting any supplement regimen. These statements are based on structure/function research and have not been evaluated by the FDA. This information is not intended to diagnose, treat, cure, or prevent any disease.
What are the benefits of Bacillus subtilis (100 Billion CFU/G)?
Bacillus subtilis (100 Billion CFU/G) has been studied for its role in supporting: Supports healthy gut microbiome composition, Supports immune function via gut-associated lymphoid tissue, Supports production of natural antimicrobial compounds, Supports digestive enzyme activity. Bacillus subtilis is a versatile spore-forming probiotic that produces multiple antimicrobial compounds (surfactin, iturin) supporting a healthy gut microbiome. At 100 billion CFU/g, it provides clinically relevant colony counts with exceptional environmental stability. Research supports its role in gut immune modulation and microbiome diversity. These statements are based on structure/function research and have not been evaluated by the FDA. This information is not intended to diagnose, treat, cure, or prevent any disease.
When is the best time to take Bacillus subtilis (100 Billion CFU/G)?
Optimal timing for Bacillus subtilis (100 Billion CFU/G) supplementation depends on the specific form, dosage, and individual factors. Some forms may be better absorbed with food; others may not require food. Always consult a qualified healthcare provider before starting, stopping, or adjusting any supplement regimen.
Are there side effects of taking Bacillus subtilis (100 Billion CFU/G)?
Tolerability of this Probiotic supplement varies by individual, dose, and specific form. Some individuals may experience gastrointestinal discomfort at higher doses. Specific side effect profiles for each form of Bacillus subtilis (100 Billion CFU/G) are documented in our formulary where available. Always consult a qualified healthcare provider before starting, stopping, or adjusting any supplement regimen. These statements are based on structure/function research and have not been evaluated by the FDA. This information is not intended to diagnose, treat, cure, or prevent any disease.
What forms of Bacillus subtilis (100 Billion CFU/G) are available?
There are 1 form of Bacillus subtilis (100 Billion CFU/G) in our formulary: Bacillus subtilis (100 Billion CFU/G) (T1 Preferred, bioavailability: high (S1 — best tier)). Forms differ in chemical structure, bioavailability, and typical dose range. FormulaForge classifies forms by tier based on published bioavailability evidence.

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FormulaForge formulates and sells supplements containing the ingredients discussed on this page. Our formulary recommendations are based on peer-reviewed bioavailability research. All cited studies are independently verifiable.