Researched Nutritionals Corebiotic – 60 Capsules
Original price was: $79.95.$72.50Current price is: $72.50.
Probiotic supplement: Three spore-forming Bacillus strains with VitaFiber® prebiotic from cassava root.
Researched Nutritionals CoreBiotic® formula with 11 billion CFU and genomically sequenced, registered strains.
Protective spore coating survives stomach acid to reach your lower digestive tract without refrigeration.
In stock
Ships same business day from Melbourne (orders before 2pm)
What is CoreBiotic® and who is it for?
CoreBiotic® is a spore-based probiotic formula from Researched Nutritionals containing three fully sequenced Bacillus strains alongside VitaFiber® prebiotic fibre. Each strain is identified by genomic sequencing, meaning you’re getting the same specific strains in every capsule rather than a loosely defined species. At 11 billion CFU per dose, it’s designed for adults who want foundational gut microbiome support without the hassle of refrigeration or fragile live-culture logistics.
This makes sense if you’re looking for a well-researched spore-based option rather than a standard Lactobacillus or Bifidobacterium supplement, or if you’ve had difficulty with conventional probiotics surviving storage or transit. The included prebiotic fibre is there to help the probiotic strains establish once they reach the intestines, so the formula is designed to work as a system rather than just delivering bacteria and hoping for the best.
Fairfield Nutrition Thoughts
Spore-based probiotics fill a real gap that standard probiotic formulas often miss. Conventional Lactobacillus and Bifidobacterium strains are fragile, and a meaningful proportion don’t survive the journey through stomach acid to reach the intestines where they’re actually useful. Spore-forming Bacillus strains sidestep this problem entirely by forming a protective endospore that’s genuinely resistant to heat, acid, and moisture, which is why they don’t need refrigeration and why the research on them tends to show consistent delivery to the lower gut.
The evidence base for spore-based probiotics is solid for a probiotic category, with double-blind, randomised, placebo-controlled trials supporting safety and efficacy across multiple peer-reviewed publications. What we like about CoreBiotic® specifically is the strain-level specificity: each strain is genomically sequenced and registered, so you’re not getting a vaguely defined species with uncertain potency. The addition of VitaFiber® prebiotic from cassava root is a practical touch, providing substrate to support colonisation without requiring a separate prebiotic supplement.
Why This Formulation / How It Works
Most probiotic supplements use live Lactobacillus or Bifidobacterium strains, which are beneficial but inherently fragile. They require refrigeration, can be compromised by manufacturing conditions, and often struggle to survive the acidic environment of the stomach in meaningful numbers. Spore-based probiotics work differently: the bacteria exist in a dormant spore form that acts as a protective shell, allowing them to pass through the stomach intact and germinate into active bacteria once they reach the more hospitable environment of the intestines. This is why CoreBiotic® requires no refrigeration and why the strains it contains have a demonstrated track record of reaching the lower gut.
Each of the three Bacillus strains in CoreBiotic® is identified to the strain level by genomic sequencing, not just to the species level. This matters because different strains of the same species can behave quite differently, and strain-level identification is what allows the research on specific strains to be meaningfully applied to a product. The three strains were chosen for complementary mechanisms rather than redundancy, and VitaFiber® prebiotic fibre from cassava root is included to provide substrate that supports probiotic colonisation once the strains are active in the intestines.
Competitive Exclusion in the Gut
Once Bacillus spores reach the intestines and exit their dormant state, they compete with other microorganisms for space and nutrients. This competitive exclusion mechanism is one of the primary ways spore-based probiotics contribute to gut microbiome composition. The Bacillus subtilis DE111® strain has research showing it can increase populations of beneficial Bifidobacterium, suggesting it does more than simply occupy space.
Gut Barrier Integrity
Bacillus subtilis DE111® has been studied for its communication with intestinal cells, with research indicating it participates in signalling that contributes to gut barrier function. The mucosal lining of the intestines is the primary interface between the gut contents and the rest of the body, and maintaining the integrity of this lining is a key function of a well-populated gut microbiome.
Prebiotic Substrate Support
VitaFiber® from cassava root provides fermentable prebiotic fibre that serves as a food source for probiotic bacteria. Including a prebiotic alongside the probiotic strains is designed to support colonisation in the intestines, giving the Bacillus strains something to work with once they arrive and become active.
When to Consider This
This spore-based probiotic formula makes sense if you’re:
- Building or re-establishing foundational gut microbiome support and want a well-researched, strain-specific option rather than a generic multi-strain formula.
- Someone who travels frequently or lives in a warm climate and finds refrigerated probiotics inconvenient or unreliable.
- Working with a practitioner on gut microbiome protocols and looking for a spore-based foundation before introducing more targeted gut support.
- Someone who has found conventional Lactobacillus-based probiotics inconsistent in their effects and wants to try a spore-forming alternative with a different mechanism of delivery.
- Focused on digestive wellness as part of a broader health strategy and want a vegan, gluten-free, and GMO-free option with no animal-derived ingredients.
Supplement strategy: CoreBiotic® works well as a standalone foundational probiotic or as part of a broader gut wellness approach. Many people use it as their daily probiotic baseline, adding more targeted gut support supplements once this foundation is established. It’s also commonly used during and after periods of dietary change or antibiotic use, typically introduced alongside dietary adjustments rather than as a standalone fix.
⚠️ Not suitable for: Pregnant or nursing individuals without prior consultation with a healthcare professional.
How to Use
The suggested dose is 2 capsules once daily, with or without food. Each 2-capsule serving delivers 11 billion CFU across the three Bacillus strains plus 660 mg of VitaFiber® prebiotic fibre. Because these are spore-forming strains, timing relative to meals is flexible, unlike some conventional probiotics that are more sensitive to stomach acid exposure.
CoreBiotic® does not require refrigeration. Store at room temperature away from direct sunlight and moisture. The spore-forming nature of the strains means they’re stable at ambient temperatures, making them practical for travel or for people who find refrigerated supplements inconvenient.
Ingredients
Per 2 capsules:
Organic VitaFiber™ prebiotic (from cassava root) — 660 mg
CB Complex — 11 Billion CFU
Bacillus coagulans (BCP92 strain)
Lactospore® Bacillus coagulans (MTCC 5856 strain)
Bacillus subtilis (DE111® strain)
Other ingredients: Capsule shell (hypromellose, water), low moisture rice dextrin, medium-chain triglycerides (derived from coconut oil), rice bran.
Allergen information: Manufactured without milk, eggs, fish, crustacean shellfish, peanuts, wheat, soy, and gluten. Produced in a facility that may process other ingredients containing these allergens. Contains coconut derivatives (medium-chain triglycerides from coconut oil).
VitaFiber® is a registered trademark of BioNeutra. DE111® is a registered trademark of Deerland Probiotics & Enzymes, Inc.
Common Questions
Do I need to refrigerate CoreBiotic®?
No. The spore-forming nature of all three Bacillus strains means they’re heat-stable and moisture-resistant at ambient temperatures. This is one of the practical advantages of spore-based probiotics over conventional live-culture formulas, and it makes CoreBiotic® well-suited for travel.
How is this different from a regular Lactobacillus or Bifidobacterium probiotic?
Conventional probiotics use live bacterial strains that can be fragile in storage and are vulnerable to stomach acid, meaning a variable proportion may not reach the intestines intact. Spore-forming Bacillus strains exist in a protective dormant state that survives stomach acid reliably, germinating into active bacteria once they reach the intestines. The mechanisms are complementary rather than identical, and some people find spore-based options more consistent in their effects.
What does “genomically sequenced” mean and why does it matter?
It means each strain in CoreBiotic® has been identified to the strain level using genomic sequencing, not just identified as a species. Different strains of the same Bacillus species can behave quite differently, and strain-level identification is what allows the research on specific strains like DE111® and Lactospore® to be meaningfully applied to the product you’re taking. It’s a quality and consistency assurance, not just a marketing claim.
Why does the label mention coconut if I don’t see it listed as an ingredient?
The medium-chain triglycerides (MCTs) used as an excipient in the capsule are derived from coconut oil. If you have a coconut allergy or sensitivity, this is worth noting before use.
Warnings & Storage
Do not use if: Pregnant or nursing without first consulting your healthcare professional.
Cautions: If you have a known sensitivity to coconut-derived ingredients, note that this product contains medium-chain triglycerides derived from coconut oil. Produced in a facility that may process milk, eggs, fish, crustacean shellfish, peanuts, wheat, soy, and gluten.
Storage: Store in a cool, dry place away from direct sunlight. Refrigeration is not required.
Always consult your healthcare professional before use if you have any pre-existing conditions or are taking medications.
| Weight | 0.062 kg |
|---|---|
| Dimensions | 5 × 5 × 9 cm |
| GTIN | 8.93E+11 |
