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PetLabCo. Probiotic Chew ingredients: What’s in Each Soft Chew? 

Discover how the thoughtfully selected ingredients in each soft chew are designed to support your dog’s digestive health and overall wellness. 

14 min read·Updated: Feb 16, 2026
PetLabCo. Probiotic Chew ingredients: What’s in Each Soft Chew? 

Each PetLabCo. Probiotic Chew contains 3 billion CFU of beneficial Bacillus probiotic strains (Bacillus coagulans, B. clausii, B. subtilis), prebiotic FOS and GOS fibers, and a synergistic postbiotic blend of yeast (saccharomyces cerevisiae, cyberlindnera jadinii).  The thoughtful formulation is designed to support your dog’s digestive health and overall wellness. It’s reviewed by experts in dog digestive health, and produced in line with NASC-certified retailer standards.

PetLabCo. Probiotic Chew supplement for dogs
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PetLabCo. Probiotic Chew Ingredients: Key Facts

  • Ingredients in each soft chew: each PetLabCo. Probiotic Chew contains 3 billion CFU of beneficial Bacillus probiotic strains (Bacillus coagulans, B. clausii, B. subtilis), prebiotic FOS and GOS fibers, and a synergistic postbiotic blend of yeast (saccharomyces cerevisiae, cyberlindnera jadinii).  
  • Potential benefits: together, these synergistic ingredients may help support your pup’s gut & digestive function. The unique blend is formulated to help maintain a healthy intestinal tract, and to help support normal immune response, through the gut-immune connection.  
  • Quality standards: PetLabCo. Probiotic Chew is manufactured in the USA using both domestic and globally sourced ingredients. The formulation is reviewed by experts in dog digestive health. PetLabCo. Is a NASC-certified retailer, giving pet parents peace of mind over the quality of ingredients and compliance with production standards.  

Review the full PetLabCo. Probiotic Chew ingredient breakdown on the PetLabCo. website or product label to understand how the soft chews are formulated to help support digestive function and the immune system in dogs 12 weeks and older. 

What Probiotic Strains Are in PetLabCo. Probiotic Chew? 

Each PetLabCo. Probiotic Chew contains 3 billion CFU of carefully selected, spore-forming probiotics, including Bacillus coagulans, Bacillus clausii, and Bacillus subtilis. This proprietary blend of spore-forming probiotics has been carefully chosen by experts in dog digestive health – there’s a higher chance of the beneficial bacteria surviving and reaching the gut environment, where they may help support your pet’s gut and immune system. For full details, check the ingredient label or product page

Probiotic Strains in PetLabCo. Probiotic Chew 

Strain Type Specific Strains Characteristics Primary Function 
Spore-forming Probiotics Bacillus coagulans, Bacillus clausii, Bacillus subtilis Resilient to stomach acid May help support gut flora balance and digestive health 

Why Multiple Probiotic Strains Matter: 

  • A carefully selected proprietary blend of spore-forming probiotics. Together, these resilient strains provide digestive support, helping to normalize bowel movements, support the immune system and maintain healthy gut flora. 
  • Spore-forming Bacillus strains are built to last. These strains are designed to survive stomach acid, reaching the gut where they can go to work. 
  • Strain diversity supports broader gut wellness. A blend of probiotics may offer more complete support than a single-strain formula. 
  • Formulated with dogs in mind. Each strain was chosen with input from experts in dog nutrition and wellness. 

How Probiotic Strains Are Selected 

Every strain in PetLabCo. Probiotic Chew is chosen for its stability, and suitability for daily canine use. The three Bacillus strains are spore-forming, which means they’re designed to stay alive through storage and digestion, so they can get where they’re needed most. This makes them a reliable choice for dogs of all sizes. 

how to give probiotics to dogs
Giving your dog a daily probiotic supplement may help support their digestion and overall wellbeing.

Why These Strains Are Used Together 

These spore‑forming Bacillus strains are selected to work together, supporting digestive balance from multiple angles while remaining stable through storage and digestion. Their combined use allows for consistent daily support without relying on fragile live cultures. 

Why CFU Count Matters 

A probiotic needs to be present in meaningful amounts to be helpful, which is why PetLabCo. Probiotic Chew is formulated with 3 billion CFU per soft chew. This level is designed to help ensure enough beneficial bacteria reach the gut consistently, even after digestion, supporting daily digestive balance and overall wellness when used as part of a regular routine. 

CFU Level What It Means Supporting Information PetLabCo. Use 
<100 million CFU Low potency May not deliver enough viable bacteria to be beneficial   Not used 
100 million–1 billion CFU Moderate potency May support some digestive balance depending on strain type   Not used in Probiotic Chew 
≥1 billion CFU High potency Widely used baseline for daily probiotic support   3 billion CFU as Standard
Per Probiotic Chew 

What Prebiotic Fiber Is in PetLabCo. Probiotic Chew? 

PetLabCo. Probiotic Chew contains prebiotic fiber sources like fructooligosaccharides (FOS) and galactooligosaccharides (GOS), which are designed to help beneficial bacteria survive and multiply in the gut. This symbiotic combination, probiotics plus prebiotics, may support digestive balance, promote regularity, and help maintain a healthy gut lining. For best results, use daily.  

Fructooligosaccharides (FOS)
A versatile prebiotic fiber that feeds beneficial bacteria

Prebiotic Fiber Types and Functions in PetLabCo. Probiotic Chew 

Prebiotic Type Primary Functions How It Helps Probiotics 
Fructooligosaccharides (FOS)Promotes the growth of proper gut microflora  Promotes the production of healthy postbiotics Acts as a food source for probiotics to help them multiply and produce postbiotics 
Galactooligosaccharides (GOS) Can help maintain gut barrier integrity  Can help with occasional skin discomfort  Support for seasonal/occasional allergies Contribute to gut environment that favors probiotic activity 

Why Prebiotics Are Included: 

  • Feed beneficial bacteria: Prebiotics act as a food source for probiotics, helping them thrive in the gut. 
  • Support colonization: Help probiotics establish a presence in the digestive tract. 
  • Promote probiotic viability: May help beneficial bacteria survive the journey through the stomach. 
  • Enhance probiotic support: Work synergistically with probiotics (synbiotic effect) to support gut health. 
  • Support digestive wellness: Prebiotics may promote regularity and help maintain a healthy gut lining. 
  • Increase overall supplement benefits: Combining prebiotics with probiotics may offer more comprehensive digestive support than probiotics alone. 

Prebiotic Benefits Beyond Feeding Probiotics: 

  • Support digestive regularity 
  • Help maintain healthy stool consistency 
  • Support gut barrier integrity (gut lining) 
  • May help with occasional digestive upset 
  • Promote growth of beneficial gut bacteria already present 

Synbiotic Advantage: Why Pairing Prebiotics With Probiotics Matters 

The combination of probiotics and prebiotics, known as a synbiotic, is considered more beneficial than either component alone. Prebiotics such as FOS (fructooligosaccharides) serve as fuel for the beneficial bacteria introduced by probiotics. This pairing helps probiotics survive, thrive, and multiply in the gut, enhancing their ability to support digestive balance and immunity. 

Why High-Quality Probiotics Include Prebiotics 

Including prebiotics like FOS in probiotic formulations reflects industry best practices and is supported by research in both human and veterinary health. Prebiotics are known to improve the survival of probiotics as they travel through the digestive tract, especially through the acidic environment of the stomach, making them more beneficial once they reach the gut. 

What Other Ingredients Are in PetLabCo. Probiotic Chew? 

  • In addition to beneficial probiotics, PetLabCo. Probiotic Chew includes carefully selected prebiotics, postbiotics, and functional ingredients designed to support overall digestive health and palatability.
  • These ingredients work together to help maintain a healthy gut environment and support your dog’s daily wellness. 
PetLabCo. Probiotic Chew contains prebiotics, postbiotics, and functional ingredients that support overall digestive health and palability.

Key Supporting Ingredients: 

  • Fructooligosaccharides (FOS): A prebiotic fiber that feeds beneficial gut bacteria, supporting their growth and survival in the digestive tract. Helps probiotics function more effectively. 
  • Galactooligosaccharides (GOS): Another prebiotic that supports the survival and activity of probiotics and helps promote a balanced gut microbiome. 
  • Synergistic yeast blend (Saccharomyces cerevisiae, Cyberlindnera jadinii): These postbiotic sources may support gut barrier integrity and digestive comfort. Postbiotics are the beneficial byproducts of fermentation, included here to round out the gut health ecosystem. 
  • Pork liver: Included for palatability and taste, making the soft chew more appealing to dogs and encouraging consistent daily use. 
  • Sunflower oil, flaxseed meal, and dried sweet potato: These ingredients contribute to the soft chew base. 
  • Rosemary extract: Often included as a preservative, with antioxidant properties that help maintain product freshness. 

Why The Soft Chew Format Matters: 

The soft chew format is designed for ease of use and daily compliance. Unlike capsules or powders, soft chews are typically more palatable – making it easier for dogs to accept them as part of their routine. Each soft chew is pre-measured, which helps support accurate daily administration without the need for measuring or mixing. This format also makes supplementation feel like a reward, which can reduce resistance in picky eaters and support long-term use. 

PetLabCo. is committed to transparency, so pet parents can make informed decisions about what they give their dogs. The full ingredient list for PetLabCo. Probiotic Chew is clearly available on the product packaging and on the product page. This includes active ingredients like probiotics and prebiotics, as well as all inactive components used in the soft chew base. Knowing exactly what’s inside each soft chew helps you feel confident in your dog’s daily routine. 

How Do PetLabCo. Probiotic Chew Ingredients Work Together? 

The ingredients in PetLabCo. Probiotic Chew are thoughtfully selected to work in harmony to support your dog’s digestive and immune health. The multi-strain probiotic blend (including Bacillus coagulans, Bacillus clausii, and Bacillus subtilis species) helps maintain a balanced gut flora, while prebiotic fiber provides fuel to help these beneficial bacteria survive and thrive. This combination, known as a symbiotic, is more efficient than probiotics or prebiotics alone. 

Additional ingredients in the soft chew base ensure consistent dosing and a flavor most dogs enjoy, which helps make daily use easier. Each component plays a role: probiotics populate the gut, prebiotics feed them, and the soft chew format makes delivery smooth and stress-free. The result is a daily supplement designed to support digestive comfort, stool consistency, and a healthy immune response over time. 

PetLabCo. Probiotic Chew is America's no. 1 selling probiotic chew for dogs

Where Do PetLabCo. Probiotic Chew Ingredients Come From? 

PetLabCo. Probiotic Chew is manufactured in the USA using a blend of domestic and globally sourced ingredients. Each ingredient is selected based on quality, and its role in supporting digestive and immune health in dogs. 

The probiotic strains are chosen for their stability, survivability, and compatibility with the canine digestive tract. All ingredients meet PetLabCo.’s internal quality standards and are part of a vet-reviewed formulation, helping ensure the product is suitable for daily use. 

Frequently Asked Questions About PetLabCo. Probiotic Chew Ingredients 

1. Are PetLabCo. Probiotic Chew ingredients natural? 

PetLabCo. Probiotic Chew is formulated with a combination of naturally derived ingredients and other high-quality components that help ensure product stability, and palatability. 

Some ingredients, like preservatives or stabilizers, may be carefully selected synthetic compounds that help maintain shelf life and consistency, which is common in pet supplements. All ingredients are included for a clear purpose and are reviewed for quality. 

2. PetLabCo. Probiotic Chew Contains Any Allergens? 

PetLabCo. Probiotic Chew is formulated without common allergens like wheat, soy, or artificial colors. However, they do contain pork (used for palatability) and dried dairy-based fermentation products (used as a probiotic source), which may not be suitable for dogs with sensitivities to pork or dairy. 

While most dogs tolerate the formula well, it’s important to review the full ingredient list on the product label or website if your dog has known food sensitivities. Always consult your veterinarian before introducing a new supplement, especially if your dog has a history of allergies or dietary restrictions. 

3. How are the probiotic strains kept alive in Probiotic Chew? 

PetLabCo. Probiotic Chew is formulated with stabilized probiotic strains that are processed using specialized techniques to preserve viability through manufacturing and shelf life. This includes gentle heat control during production and the use of hardy, spore-forming strains designed to remain dormant until they reach the gut. 

The product is also shelf-stable, meaning no refrigeration is required, as long as the container is tightly sealed and stored in a cool, dry place

4. Can I see the full ingredient list before buying? 

Yes, the full ingredient list for PetLabCo. Probiotic Chew is available on the product packaging and the official PetLabCo. website. Transparency is a priority, so pet parents can review every ingredient, including the active probiotic strains, prebiotics, inactive base ingredients, and flavoring agents, before making a purchase. 

5. Are the probiotic strains in PetLabCo. Probiotic Chew tested for quality? 

Yes, the probiotic strains in PetLabCo. Probiotic Chew are quality-tested during manufacturing. Each batch is produced in a facility that follows strict quality standards, and the strains are selected based on stability in dogs. 

Final Thoughts: Understanding PetLabCo. Probiotic Chew Ingredients 

  • PetLabCo. Probiotic Chew stands out for its thoughtful ingredient formulation, combining 3 beneficial spore-forming probiotic strains with prebiotic fiber and a synergistic postbiotic yeast blend to support optimal gut health.  
  • Each soft chew delivers 3 billion CFU of probiotics, in a soft-chew format designed for palatability and daily convenience. 
  • Unlike some brands that use single strains or lower potencies, PetLabCo. uses a multi-strain synbiotic approach (prebiotics + probiotics + postbiotics) reviewed by experts in canine wellness. 
  • The product is manufactured in the USA using globally and domestically sourced ingredients, and undergoes quality checks to help ensure it meets label claims. 
  • To understand exactly what goes into each soft chew, review the full ingredient list on the Probiotic Chew packaging or product page.  

Formulated with a blend of high-quality prebiotics, probiotics, and postbiotics, PetLabCo. Probiotic Chew delivers daily digestive support in a tasty soft chew that most dogs enjoy. With consistent use over at least 90 days, the beneficial bacteria are given time to establish in the gut and support overall wellness and immune function. For ongoing support, Probiotic Chew can be used as part of your dog’s long-term routine. 

Ready to support your dog’s gut health? Explore PetLabCo. Probiotic Chew today. 

Sources: 

Disclaimer: PetLabCo. products are not intended to diagnose, treat, cure, or prevent any disease. Results may vary. Always consult your veterinarian before introducing a new supplement. Ingredient lists and quantities accurate at time of writing.


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Charly ChowC
Written by

Charly Chow

Charly Chow is a pet-industry writer with a passion for canine mental health and wellbeing. When she’s not collaborating with PetLab Co's expert vets on helpful articles for pup pawrents, Charly can be found reading, exploring antiques shops, or cuddling up with Timo and Oreo, her Maltese and Maltipoo fur babies.

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