S
Sync Therapy
Book
Sync Therapy

Victoria's Premier Wellness Clinic

6x Award Winner
Book Appointment Now
(250) 812-8698
132-328 Wale Road, Suite 120, Colwood, BC
4.9/5 • 107+ Reviews
Call Now: (250) 812-8698
Supplements

8 Best Soil Based Probiotics & Spore Based Probiotics in 25

By Daryl Stubbs
15 min read
megasporebiotic is the best soil based probiotic supplement in canada for 2023
Author Daryl Stubbs
About the Author Daryl Stubbs—6-time “Best Massage and Rehab Clinic” winner (Community Votes) and founder of Sync Therapy. With 12 years’ experience and 10,000+ treatment hours, he blends manual therapy with evidence-based gut-health and lifestyle coaching, helping clients on-site and online worldwide move better, feel better, and live their best.
Best Soil-Based Probiotics Canada: Top 5 Spore-Forming Brands of 2024

Unlock a healthier gut with our expert guide and reviews of the most effective soil-based organisms and spore-forming probiotics for digestion, immunity, and microbial balance.

Key Takeaways: Best Soil-Based Probiotics

  • Superior Survivability: Soil-based probiotics (SBOs) contain hardy spore-forming strains like Bacillus subtilis that survive stomach acid to effectively colonize your gut.
  • Top Overall Probiotic: JustThrive Probiotic is our top pick, clinically proven to help heal leaky gut in just 30 days, making it ideal for reducing bloat and gas.
  • Best for SIBO: MegaSporeBiotic is a potent, five-strain formula designed to recondition the entire microbiome, making it one of the best soil-based probiotics for SIBO.
  • Best for Dogs: Brands like Just Thrive Pets and Four Leaf Rover offer resilient, effective soil-based probiotics specifically formulated for your dog’s digestive and immune health.

Why You Can Trust Our Soil-Based Probiotic Reviews

Our recommendations are built on a foundation of expertise, clinical experience, and rigorous research. We are dedicated to providing you with trustworthy and effective wellness solutions and soil-based probiotic brands.

Award-Winning Clinic

We are a multiple award-winning health clinic, recognized for our excellence in patient care and innovative health strategies.

Personal & Clinical Use

We use these products personally and recommend them to thousands of clients in our clinic, observing their real-world effectiveness.

Science-Backed Principles

We follow the science-backed principles of leading health experts and rigorously study the latest scientific literature on gut health.

Rigorous Research

Our team spends hundreds of hours analyzing clinical trials and consumer data to ensure our recommendations are unbiased and effective.

In This Article: A List of Soil-Based Probiotics

A List of the Top 5 Soil-Based Probiotic Brands

1. JustThrive Probiotic

Best Overall for Leaky Gut, Gas & Bloating

JustThrive Probiotic bottle, a top spore-based probiotic.

JustThrive is our top-rated spore probiotic due to its unique formulation that guarantees 100% survivability and its powerful clinical backing. It’s supported by a groundbreaking study showing it can address leaky gut in just 30 days, making it a fantastic choice for anyone with digestive distress.

  • Proven Leaky Gut Solution: Clinically shown to reduce leaky gut markers by 42%.
  • Reduces Distress: Effectively beats bloat, gas, constipation, and diarrhea.
  • Antioxidant Production: Turns your gut into an antioxidant factory for total-body health.
  • Improves Skin & Energy: Users report clearer skin, better sleep, and more energy.
See Best Price

Use code “synctherapy” for 15% off

2. MegaSporeBiotic

Best Soil-Based Probiotic for SIBO

MegaSporeBiotic bottle, the best soil-based probiotic supplement for SIBO.

MegaSporeBiotic is widely considered the gold standard in spore-based probiotics for practitioners. Its broad-spectrum, five-strain formula is designed to recondition the gut by promoting microbial diversity and maintaining a healthy gut barrier, making it a powerful choice for complex cases like SIBO.

  • Comprehensive Formula: Contains 5 well-studied Bacillus spores.
  • Heals Leaky Gut: Clinically shown to reduce gut inflammation and improve gut barrier function.
  • Controls Overgrowth: The best soil-based probiotic for SIBO and other forms of bacterial imbalance.
  • Nutrient Production: Produces key nutrients like antioxidants, B-vitamins, and Vitamin K2 directly in the gut.
See Best Price

Discount applied via link

3. Enviromedica Terraflora Deep Immune

Best for Fortifying Your Immune System

Enviromedica Terraflora Deep Immune bottle.

This advanced synbiotic (probiotic + prebiotic) formula is specifically designed to support the immune system. It combines spore-based probiotics with LC-Plasma, a unique paraprobiotic clinically tested to activate key immune cells, providing year-round defense.

  • Advanced Immune Support: Contains LC-Plasma to activate the body’s master immune cells (pDCs).
  • Synbiotic Formula: Includes organic, wild-harvested prebiotics to nourish beneficial bacteria.
  • Resilient Strains: Uses heat-resistant spore-based probiotics for guaranteed delivery.
  • Award-Winning: Named NEXTY’s 2021 Best New Product for supporting a healthy microbiome.
See Best Price

Use code “Synctherapy15” for 15% off

4. Enviromedica Terraflora Advanced Care

Best for a Powerful Gut Reset

Enviromedica Terraflora Advanced Care bottle.

For those needing a powerful gut reset, Terraflora Advanced Care introduces bacteriophages—nature’s “probiotic multipliers.” These unique organisms selectively target harmful bacteria, clearing the way for beneficial probiotics to recolonize and thrive, with effects starting in as little as 24 hours.

  • Contains Bacteriophages: Selectively removes harmful bacteria to reset microbial balance.
  • Fast-Acting: Designed to provide powerful, rapid gut support.
  • Synergistic Power: Combines phages, SBOs, and prebiotics for maximum benefit.
  • Restores Digestion: Ideal for those who feel “off balance” and need quick relief.
See Best Price

Use code “Synctherapy15” for 15% off

5. Dr. Ruscio Soil-Based Probiotic

Best Foundational SBO Support

Dr. Ruscio Soil-Based Probiotic bottle.

From leading gut health expert Dr. Michael Ruscio, this probiotic provides a solid foundation of well-researched Bacillus strains. It’s designed to support normal GI and immune function and is part of his “Triple Therapy” approach to healing the gut.

  • Expert Formulated: Created by a respected clinician in the gut health space.
  • Supports GI Function: Helps with occasional diarrhea, bloating, and stool consistency.
  • Hardy Strains: Uses resilient Bacillus species that survive the digestive tract.
  • Quality Assured: Manufactured with high-quality practices.
See Best Price

Price: ~$44

Best Soil-Based Probiotics for Dogs

Soil-based probiotics for dogs are a unique category derived from beneficial bacteria naturally found in soil. These probiotics are particularly resilient because they form spores that protect them from harsh environments like stomach acid, allowing them to effectively colonize the gut and support your dog’s digestive and immune health.

Just Thrive Pets Probiotic

Best for Overall Pet Wellness & Palatability

Just Thrive Pets Soil-Based Probiotic for dogs.

This vet-formulated probiotic contains robust strains like Bacillus licheniformis and is scientifically verified to survive the digestive tract, even during antibiotic use. It includes defatted grass-fed beef liver, making it highly palatable for picky eaters.

  • Supports Digestion & Immunity: Promotes better nutrient absorption and a stronger immune response.
  • Allergen-Free: Free from common allergens like gluten, dairy, soy, and chicken.
  • Easy to Dose: Powder can be easily sprinkled on food.
  • Guaranteed: Backed by a 100% money-back guarantee.
See Best Price

Four Leaf Rover – Protect

Best for Daily Gut Maintenance & Yeast Control

Four Leaf Rover Protect Soil-Based Probiotic for dogs.

Protect is a daily soil-based probiotic blend designed to maintain gut health. It combines Bacillus subtilis and Bacillus coagulans with Saccharomyces boulardii, a beneficial yeast that helps fight yeast overgrowth and supports the gut during antibiotic use.

  • Fights Yeast: Includes S. boulardii to combat common yeast issues.
  • Daily Support: Designed for daily use to maintain a healthy gut and immune system.
  • Includes Prebiotics: Contains organic prebiotics to nourish beneficial bacteria.
  • Hypoallergenic: Soil-based strains are less likely to cause digestive upset.
See Best Price

Dog Probiotic Comparison

Feature Just Thrive Pets Four Leaf Rover (Protect)
Probiotic Type Soil-based strains (e.g., Bacillus licheniformis) Soil-based strains + Probiotic yeast (S. boulardii)
Best For Daily wellness, skin, joints, behavior Daily maintenance, yeast control, antibiotic support
Additional Ingredients Defatted grass-fed beef liver Organic prebiotics (inulin)
Form Powder in capsule Powder

A Guide to Buying Soil-Based Probiotics in Canada

For those looking for the best soil-based probiotics in Canada, it’s important to know that many of the top-tier brands are based in the US. However, most of the brands we’ve recommended, including JustThrive and Enviromedica, ship directly to Canada, making them accessible to Canadian consumers.

  • Shipping to Canada: Most US-based companies have streamlined their shipping processes to Canada. Be sure to check for any potential duties or taxes at checkout.
  • Practitioner Brands: Brands like MegaSporeBiotic are often sold through licensed healthcare practitioners in Canada. You may need to purchase them through a naturopathic doctor or a specialized online health store.
  • Why These Brands?: We’ve selected these specific soil-based probiotic brands for our list because their quality, clinical backing, and effectiveness are superior, making them worth the effort to acquire in Canada for those serious about their gut health.

Why SBOs are the Best Probiotics for SIBO

When it comes to SIBO (Small Intestinal Bacterial Overgrowth), choosing the right probiotic is crucial. Many traditional probiotics, which contain high amounts of Lactobacillus and Bifidobacterium strains, can actually worsen SIBO symptoms by adding more bacteria to an already overgrown small intestine.

This is where soil-based organisms shine. The key benefits of using a soil probiotic supplement for SIBO include:

  • Spore-Forming Nature: SBOs remain in their protective spore state as they travel through the acidic stomach and the small intestine. They don’t “wake up” and colonize until they reach the large intestine, where they belong. This prevents them from contributing to the overgrowth in the small intestine.
  • Competitive Exclusion: Once in the large intestine, these beneficial bacteria help to crowd out and displace pathogenic bacteria and yeast. Strains like Bacillus subtilis and Bacillus coagulans are known to produce compounds that inhibit the growth of harmful microbes.
  • Microbiome Reconditioning: A high-quality, multi-strain formula like MegaSporeBiotic is designed to fundamentally recondition the gut environment, promoting diversity and resilience, which is essential for long-term SIBO management.

For these reasons, a well-formulated soil-based probiotic is not only safer but also more effective for individuals managing SIBO.

JustThrive vs. MegaSporeBiotic: Which is Best?

For many, the choice comes down to the two top contenders: JustThrive and MegaSporeBiotic. Both are exceptional, but they excel in slightly different areas.

Feature JustThrive Probiotic MegaSporeBiotic
Best For Leaky gut, bloating, gas, and general digestive wellness. Total microbiome reconditioning, SIBO, complex gut issues.
Key Strains 4 Bacillus Strains (incl. subtilis HU58, indicus HU36) 5 Bacillus Strains (incl. subtilis, clausii, indicus)
Key Differentiator Clinically proven to heal leaky gut in 30 days. Broadest spectrum of spores for comprehensive gut repair.
Clinical Backing Published, peer-reviewed study on leaky gut. Extensive practitioner use and studies.
Price Point $$ – Mid-range $$$ – Premium

The Verdict:

Choose JustThrive if: Your primary goals are to reduce bloating, gas, and other signs of leaky gut. Its proven effectiveness, 100% survivability guarantee, and slightly lower price point make it our top choice for most people.

Choose MegaSporeBiotic if: You’re working with a practitioner or have complex gut issues like SIBO and need the most powerful, broad-spectrum formula available to recondition your microbiome.

What Are Soil-Based Organisms Probiotics?

Soil-based organisms (SBOs) are beneficial bacteria that originate in the soil. Unlike traditional probiotics derived from dairy (like Lactobacillus and Bifidobacterium), soil-based probiotics are spore-forming. This means they are protected by a hard, natural shell that allows them to survive the harsh, acidic environment of the stomach.

This superior survivability is their key advantage. While many traditional probiotics die off before reaching your intestines, SBOs arrive intact, ready to colonize and confer their health benefits where they matter most. They more closely resemble the microbes our ancestors consumed through foraged, farm-fresh foods, making them uniquely suited to the human gut.

Science-Backed Benefits of SBOs

Reduces Leaky Gut

SBOs are clinically proven to strengthen the gut lining, reducing intestinal permeability (leaky gut). One study found that JustThrive reduced leaky gut markers by 42% in just 30 days.

Improves Digestion

By balancing gut flora, SBOs effectively reduce common digestive complaints like gas, bloating, constipation, and diarrhea, leading to improved regularity and comfort.

Enhances Immune Function

Roughly 80% of your immune system resides in your gut. By promoting a healthy microbiome, SBOs help modulate the immune system for a more balanced and resilient response.

Balances Gut Microbiome

SBOs inhibit the growth of harmful bacteria and yeast (like Candida) while promoting the growth of diverse, beneficial bacteria, creating a healthier gut ecosystem.

Frequently Asked Questions

Are soil-based probiotics safe?

Yes, for the vast majority of people, soil-based probiotics from reputable brands are very safe. Their long history of use and the spore-forming nature of the bacteria make them well-tolerated. However, individuals who are severely immunocompromised should always consult a doctor before starting any new probiotic.

Who should not take soil based probiotics?

While generally safe, individuals who are severely immunocompromised (e.g., undergoing chemotherapy or with certain medical devices like central lines) should consult their doctor before taking any probiotic, including SBOs, as there is a theoretical risk of infection.

How do I know if a probiotic is soil-based?

Check the supplement facts panel for strains that belong to the Bacillus genus. Common SBO strains include Bacillus subtilis, Bacillus coagulans, Bacillus clausii, and Bacillus indicus.

Final Thoughts: Your Path to a Healthier Gut

Choosing the right soil based probiotic is a critical step towards optimizing your gut health. Soil-based organisms represent a significant advancement, offering a more resilient and effective way to rebalance your microbiome.

An investment in a high-quality, clinically-proven soil based probiotic supplement like JustThrive or MegaSporeBiotic is an investment in your long-term wellness. By choosing the right formula for your needs and using it consistently, you are embracing a powerful tool for improving digestion, immunity, and overall vitality.

Daryl Stubbs, RMT, CAT(C) — Sync Massage Therapy

About Daryl Stubbs, RMT, CAT(C)

Award-winning Registered Massage Therapist & Certified Athletic Therapist in Greater Victoria, BC. Owner of Sync Massage Therapy. I blend hands-on expertise with evidence-based modalities like PEMF and red-light therapy to help clients recover, manage chronic pain, and perform at their best.

Reader favourites: FDA-approved light therapy for pain, Best probiotics in 2025, Top probiotics for IBS.

Also listed on Sun Life Lumino Health: Provider Profile

Leave a Comment