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Pet Defenders with Qrill™Pet
Pet Health†
$34.95
Quantity
100% Satisfaction • Fast Free Shipping $75+ • Secure Checkout
Comprehensive immune, antioxidant, and stress support for pets in one daily scoop.
This veterinary-informed blend combines organic mushroom extracts from Reishi, Turkey Tail, Shiitake, Maitake, and Chaga with Qrill™Pet Antarctic krill in a convenient, meal-topping powder format. Designed to support immune resilience, microbiome balance, antioxidant protection, and long-term vitality, this functional formula is easy to administer and highly palatable for pets of all ages.
- Powder format for daily use
- NASC audited and certified
- Made with certified organic mushrooms
- Guaranteed beta-glucan levels
From immune balance to antioxidant protection and stress support, Pet Defenders + Qrill™Pet is designed to support whole-body wellness from the inside out. Whether you are supporting early-life immune development, ongoing immune challenges, or long-term vitality, this formula provides broad-spectrum daily support.
- Comprehensive immune and microbiome support in a tasty, functional powder
- Whole-body antioxidant support, including the advanced antioxidant ergothioneine
- Adaptogenic support to help pets respond to stress
- Promotes longevity and overall vitality
Administer 1/2 teaspoon daily for each 20 pounds of body weight or as directed by your veterinarian.
Real Mushrooms products are always:
- Rated the #1 Mushroom brand by ConsumerLab
- Organic mushroom identity authenticated by Purity-IQ™
- Verified for active compounds, safety, & purity through third-party testing
- Free of grains, starches, and fillers
- Sourced from mushroom (fruiting bodies) only—never mycelium fermented grain
- Produced in a Good Manufacturing Practices (GMP)-compliant facility
This is our Real Mushrooms Guarantee: no shortcuts, no gimmicks—just real mushrooms.
Real Pets. Real Results.†
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"Keeping my pups healthy!!!"
-Verified Customer
"Love this product."
-Verified Customer
"It really helped my dogs immune system! Less scratching & her coat came in full after losing so much hair after her surgery 🥰🐾"
-Verified Customer
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Real Ingredients
Krill Meal (QrillPet™)
Wild-caught Antarctic krill is a rich source of omega-3 fatty acids, marine proteins, and astaxanthin.
It enhances your pet's heart and brain health, supports joint mobility, and contributes to a healthy coat and skin.
5 Defenders® Mushroom Extract Blend (Organic)
A blend of five functional mushrooms (Reishi, Turkey Tail, Shiitake, Maitake mushrooms and Chaga extract powders) known for their immune-modulating benefits.
Boosts immune function, stabilizes mast cell membranes, has an anti-aging effect, and supports digestive health.
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4-Time Winner
Best Mushroom Supplement Brand: ConsumerLab.com Survey
Trusted by wellness seekers and professionals alike, our mushroom supplements have earned the rating of Best Mushroom Supplement Products four years in a row by consumers in ConsumerLab.com Annual Supplement Survey.
†Ratings based on results of the 2025 ConsumerLab.com Survey of Supplement Users. More information.
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Real Quality
Real Mushrooms is built on 50+ years of mycological and mushroom-growing expertise. Our founder’s roots trace back to the beginning of the functional mushroom category in North America. Today, we continue to lead the industry in science-backed and effective mushroom supplements.
Purity, Potency, Transparency
Every batch of our supplements is lab-verified for purity. We test for unwanted fillers and various contaminants.
We ensure quality along the entire production process:
- Source: Organically grown mushrooms from trusted long-term partners
- Process: Extracted for bioavailability, lab-verified, and blended/packaged in the USA
- Testing: Each batch is tested for heavy metals, microbial contamination, pesticides & solvents
Nothing hidden. No marketing gimmicks. Just real ingredients, real science, and real results.
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Real Vet. Real Formula.
Dr. Robert Silver, DVM, MS
Chief Veterinary Officer Formulator
Dr. Robert Silver brings to the Real Mushrooms Science Team 40 years of practical clinical experience treating small and large animals with diet, acupuncture, nutraceuticals, botanicals, and medicinal mushrooms.
- Graduated from Colorado State's College of Veterinary Medicine in 1982.
- Established one of the first integrative vet clinics in the USA in Boulder, CO in 1993.
- Adjunct faculty member at several veterinary colleges.
- Published papers and books on the topic of alternative medicines for pet health.
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Real Mushrooms vs. Other Brands
Not all mushroom supplements are created equal. Real Mushrooms has set the standard for the most effective mushroom products because we have never compromised on quality. Here’s how Real Mushroom supplements compare with the other leading brands on the market.
| Real Mushrooms | Other Brands | |
|---|---|---|
| Mushroom Source | 100% organic mushrooms (fruiting bodies) | Mycelium fermented grain (starch) and fillers |
| Beta-Glucan Content | Guaranteed beta-glucans — every batch third party tested for identity, purity and potency | Typically low beta-glucans and not disclosed — may list total polysaccharides instead which includes any starches |
| Extraction Method | Hot water extracted or dual extracted for potency & optimal absorption | Improperly extracted or simply dried and ground |
| Filler-Free Guarantee | No starch, no fillers, no mycelium fermented grain | Commonly contains grain (rice, oats or sorghum), starch and/or maltodextrin |
| Transparency | Full disclosure of ingredients, sourcing, testing and extraction | Vague or misleading marketing and unclear labeling |
| Cost per Serving | Cost-effective for active compounds concentration in every serving | Very expensive for amount of active compounds present |
| Expertise | 50+ years of mushroom cultivation expertise — leader in supplement industry quality & standards | Mislead customers with ambiguous labeling and filler-heavy products |
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Take the guesswork out of your mushroom supplement. Start enjoying real results now.
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Frequently Asked Questions
They can be given with or without food. Many pet parents find that administering capsules with meals is easier and helps ensure consistency over time.
This formula provides daily immune, antioxidant, and stress support and is designed to promote resilience, quality of life, and whole-body wellness in pets of all ages.
All our mushroom extracts are from the leading supplier of organic mushroom extracts: Nammex. They have over 40 years of mushroom growing experience and were one of the first companies to bring organic functional mushroom extracts to North America.
Their ingredients go through rigorous quality control and are tested twice for heavy metals, agricultural chemicals and microbial contamination to ensure they meet all standards for dietary supplements of this nature. All of their extracts are made from certified organic mushrooms (fruiting bodies), organically grown or wildcrafted from deep within mountain regions of China.
Mushrooms used for dietary supplements are seldom grown in North America since they are too expensive. China is the leading supplier of mushrooms worldwide and supplies over 90% of the world’s mushrooms.
It has a rich history of mushroom use as both food and medicine and is the birthplace of mushroom cultivation, with shiitake being farmed in the early 1200s. China is one of the only places in the world where you can get 100% organic mushroom (fruiting body) extracts that can be sold at an affordable price.
It is extremely important to distinguish the difference between mushrooms and mycelium.
Mushrooms are the "fruit" and reproductive stage of these organisms, while the mycelium is the root system or "body" of the fungus.
Mushrooms contain much higher levels of active compounds like beta-glucans, and there is a large body of research on them. They have also been consumed for thousands of years as food, and many health benefits have been shown from just mushroom consumption.
Mycelium is commonly grown on a grain substrate, and this grain cannot be separated from the mycelium, so much of the final product is actually grain with no mushrooms present. This shows up in high amounts of starch and low amounts of active compounds like beta-glucans.
For these reasons, Real Mushrooms® only utilizes mushrooms in all of its products, with verified levels of important active compounds like beta-glucans, and is always guarded against starchy fillers like grain.
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