Skip to content

✦ AI Overview

FidoSpore™ (30 Capsules) by Microbiome Labs is the first probiotic supplement clinically shown to support gut health in dogs and cats. Its unique 3-strain spore-based and lactic acid formula — Bacillus subtilis HU58™, Bacillus licheniformis (SL-307), and Pediococcus acidilactici — delivers targeted digestive and immune support for pets. 30 capsules, 30-day supply at 1 capsule per day. Capsule can be opened and sprinkled onto food.

🐾 3-Strain Pet Formula 🧬 Spore-Based Probiotics 🐶 Dogs & Cats 🥩 Grass-Fed Beef Liver Flavor
🌍 Worldwide Delivery in 5–10 Days✅ Duties & Taxes PrepaidNo extra charges at delivery — what you pay at checkout is all you pay.
🏷️ Volume DiscountBuy 2 or more & save 5%Discount applied automatically at checkout.
✓ Non-GMO ✓ Gluten Free ✓ Grain Free ✓ No Artificial Additives

Key Features

  • 3-Strain Spore & Lactic Acid Formula — Bacillus subtilis HU58™, Bacillus licheniformis (SL-307), and Pediococcus acidilactici — clinically studied strains for pet gut health.
  • Spore-Based Survivability — HU58™ and SL-307 exist in a protective endospore state that survives the digestive tract, arriving intact in the intestines to colonize and support the microbiome.
  • Digestive & Immune Support — Supports digestive enzyme production, short-chain fatty acid synthesis, gut barrier integrity, and immune system balance in dogs and cats.*
  • Pediococcus acidilactici — A lactic acid-producing bacterium shown to help dogs with digestive symptoms including constipation and diarrhea.*
  • Grass-Fed Beef Liver Flavor — Contains defatted grass-fed beef liver extract for palatability; can be opened and sprinkled onto food or given whole. Dosing is not weight-dependent.
  • 30 Capsules — 30-Day Supply — Best value at $2.24/day

Product Overview

FidoSpore™ is the first probiotic supplement clinically shown to support gut health in dogs and cats. Developed by Microbiome Labs — the team behind MegaSporeBiotic™ — FidoSpore brings the same spore-based probiotic science to your pets. Its unique 3-strain formula combines two Bacillus spore-forming strains with Pediococcus acidilactici to deliver comprehensive digestive and immune support.

Unlike conventional pet probiotics that degrade before reaching the intestines, FidoSpore's Bacillus spores survive the entire digestive journey intact, germinating and colonizing in the gut where they're needed most. The addition of Pediococcus acidilactici provides targeted lactic acid production to support a balanced gut environment. Each capsule can be opened and sprinkled onto food, making daily dosing easy for even the pickiest pets — with a grass-fed beef liver flavor they'll love.

Technical Specifications

Brand / Vendor Microbiome Labs
Category Pet Probiotics / Pet Gut Health
Probiotic Strains Bacillus subtilis HU58™, Bacillus licheniformis (SL-307), Pediococcus acidilactici
Suitable For Dogs & Cats
Capsule Count 30 Capsules
Serving Size 1 Capsule Daily
Supply Duration 30-Day Supply
Price Per Day $2.24/day
Administration Open capsule and sprinkle on food, or give whole — not weight-dependent
Flavor Defatted Grass-Fed Beef Liver Extract
SKU B086D5T48C

Supplement Facts

Serving Size: 1 CapsuleServings Per Container: 30
Amount Per Serving % Daily Value
Proprietary Probiotic Blend
⚠️ Verify CFU count from COA/label 		† mg †
Bacillus subtilis HU58™ †
Bacillus licheniformis (SL-307) †
Pediococcus acidilactici †

† Daily values not established.

Other Ingredients: Defatted grass-fed beef liver extract, cellulose, vegetable capsule (cellulose and water). ⚠️ Verify full other ingredients from COA/label before publishing.
Always verify full ingredient listings on physical product label upon receipt.

📊 Dosage & Usage Guide

Always follow label directions. Consult your veterinarian before use if your pet is pregnant, nursing, or taking prescription medications.

Pet Recommended Dose Frequency & Directions
Dogs & Cats 1 Capsule Add 1 capsule to food once daily. Capsule can be opened and sprinkled onto food or given whole. Dosing is not weight-dependent.

Frequently Asked Questions

What makes FidoSpore different from regular pet probiotics?

FidoSpore uses the same spore-based probiotic technology as MegaSporeBiotic™ — the #1 practitioner-recommended human probiotic. Its Bacillus spores survive the entire digestive tract with high viability, arriving intact in the intestines where they germinate and colonize. Most conventional pet probiotics lose the majority of their potency before reaching the gut. FidoSpore also includes Pediococcus acidilactici, a lactic acid-producing strain specifically studied for digestive support in dogs.

How do I give FidoSpore to my pet?

Simply add one capsule to your pet's food once daily. The capsule can be opened and the contents sprinkled directly onto food, or given whole if your pet will accept it. Dosing is not weight-dependent — one capsule per day is the recommended dose for both dogs and cats of all sizes.

Is FidoSpore safe for cats as well as dogs?

Yes — FidoSpore is formulated for both dogs and cats. The same 1 capsule per day dose applies to both species, regardless of size or weight. Consult your veterinarian if your pet has a specific health condition or is on prescription medications.

Can FidoSpore be used alongside other supplements?

FidoSpore is generally compatible with most pet vitamins, minerals, and dietary supplements. It can be used as part of a broader pet wellness protocol. Consult your veterinarian before combining with prescription medications or therapeutic diets.

How long before I see results?

Individual results vary. Many pet owners report improvements in stool consistency, digestive comfort, and energy within 2–4 weeks of consistent daily use. For best results, use continuously as directed and consult your veterinarian for personalized guidance.

All content on the website relating to products including (or are a similar nature to) medicines, vitamins and supplements are not intended to be used for the diagnosis, treatment, cure, or prevention of any health condition or disease. The information provided on this page does not constitute advice and should not be taken over the advice of medical practitioners, pharmacists, or any other licensed healthcare professionals. You should contact your healthcare provider in relation to this product if you believe you have a medical issue. Please ensure that you always read the label and follow any instructions that come with the product before you use or consume. Please do not rely on the information stated on our website.