Mushroom Blend Immune System Support Soft Chew Supplement for Dogs
Verified Jun 7, 2026
This is a soft chew mushroom supplement for dogs designed to complement their regular diet, not replace it. It uses organic extracts of shiitake, lion’s mane, cordyceps, maitake, and reishi mushrooms as the primary active ingredients, with pork liver and bacon flavor to make it more palatable. It’s aimed at dogs whose owners are looking for additional immune, antioxidant, and general wellness support alongside a complete dog food.
A thoughtfully formulated mushroom-based supplement that provides a blend of five organic mushroom extracts in a palatable soft chew form. It’s suitable for most adult dogs as an add-on to a balanced diet when an owner is specifically interested in mushroom-derived immune and antioxidant support. As with any supplement, it should be used under your veterinarian’s guidance, especially for dogs with medical conditions or on other medications.
The KibbleLab Score (1–10) is assessed from publicly available product data. Our evaluation is science-based, not marketing-based.
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At a Glance
KibbleLab Review
Strengths
- Uses multiple organic mushroom extracts (shiitake, lion’s mane, cordyceps, maitake, and reishi) as the main active ingredients, which are commonly chosen for immune and wellness support.
- Soft chew format with pork liver and bacon flavor can make administration easier for dogs that resist powders or capsules.
- Includes mixed tocopherols and citric acid as preservatives, which are well-established and safe for most dogs.
- Formulated as a supplement rather than a complete food, so it’s unlikely to unbalance a dog’s diet when used at labeled doses alongside a good-quality dog food.
Considerations
- This is a supplement, not a complete and balanced diet, so it should only be given in addition to a nutritionally complete dog food, not as a meal replacement.
- Brewer’s yeast and pork liver may be problematic for dogs with yeast sensitivities, pork allergies, or certain gastrointestinal issues.
- Evidence for specific health benefits of mushroom supplements in otherwise healthy pets is still limited, so expectations should be conservative and use should be guided by your veterinarian.
- The directions call for twice-daily dosing with multiple chews for medium and large dogs, which adds extra calories and ingredients that may not suit dogs needing very strict calorie control.
Full Ingredient List
Ingredients and analysis reflect manufacturer data at the time of our last update and can change without notice. Always check the actual product packaging before feeding.
Ingredient filtering helps identify compatible options but is not a substitute for a veterinary elimination diet.
Top 5 Ingredients Explained
01
Shiitake
Shiitake mushrooms are used in pet foods mainly as a flavoring/functional ingredient that provides modest fiber, B vitamins, minerals and bioactive beta‑glucans that may support immune health. When cooked and included in small amounts they are generally safe and palatable for dogs and cats, but should be used only as a supplement to complete diets because raw or improperly prepared shiitake can cause gastrointestinal upset, rare skin reactions, or carry contaminants, and mushrooms from unknown sources should be avoided.
02
Lion's Mane Mushroom
Lion's mane mushroom is used in pet foods and supplements as a functional ingredient, supplying polysaccharides (including beta‑glucans), antioxidants and some dietary fiber and is commonly promoted for immune support and potential cognitive/neural health benefits. While preliminary studies and traditional use suggest possible neuroprotective and immune‑modulating effects for dogs and cats, evidence in companion animals is limited, so high‑quality sourcing, appropriate dosing and veterinary consultation are important because some pets can experience gastrointestinal upset, allergic reactions or interactions with immune‑modulating medications.
03
Cordyceps
Cordyceps is a medicinal mushroom often included in pet foods or supplements as a functional ingredient rather than a primary nutrient, marketed for its antioxidant properties and potential to support energy, respiratory function, and immune health in dogs and cats. Evidence in companion animals is limited, so benefits are not guaranteed; quality and dosing vary between products and there can be risks of gastrointestinal upset or interactions with medications (for example immunosuppressants or blood thinners), so consult your veterinarian before use, especially for pregnant, nursing, or medicated pets.
04
Maitake
Maitake (Grifola frondosa) is a culinary and medicinal mushroom used in pet foods and supplements as a functional ingredient that supplies dietary fiber and bioactive polysaccharides (notably beta‑glucans) thought to support immune response and provide antioxidant benefits. It should be considered a complementary ingredient rather than a primary nutrient; use food‑grade, cultivated sources and consult your veterinarian—especially for pets with immune disorders, those on immunosuppressants, pregnant animals, or pets prone to gastrointestinal sensitivity—as wild mushrooms can be toxic and overconsumption may cause digestive upset.
05
Reishi
Reishi (Ganoderma lucidum) is a medicinal mushroom used in pet foods and supplements as a functional ingredient for immune support and antioxidant benefits rather than as a primary nutrient. It contains polysaccharides and triterpenes that may help modulate immunity and inflammation, but evidence in dogs and cats is limited, product quality and dosing vary, and it can interact with immunosuppressive or anticoagulant medications or cause gastrointestinal upset, so consult your veterinarian before use.
Product Details & Brand
Product Specs
Brand
Only Natural Pet offers a comprehensive range of natural pet foods, supplements, treats, and wellness products focused on holistic and sustainable pet care. The brand appeals to environmentally conscious pet owners seeking high-quality, minimally processed nutrition alternatives for their pets.
Visit Only Natural PetManufacturer
Products are manufactured in the United States under strict quality assurance protocols, including adherence to FDA and AAFCO standards. The company emphasizes sustainability, renewable energy use, and third-party testing for ingredient safety.
Manufacturing details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing.
Recall History
Only Natural Pet Mushroom Blend Immune System Support Soft Chew Supplement for Dogs has no recalls since 2014.
Source: FDA Pet Food Recall Database · Monitored daily
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Frequently Asked Questions
Has Only Natural Pet ever been recalled?
We have no recalls on record for Only Natural Pet. We monitor the FDA Pet Food Recall Database daily.
How does KibbleLab rate foods?
Our scores are based on ingredient composition, nutritional profile, AAFCO compliance, and health considerations. We don't penalize by-products, grains, or synthetic preservatives. Brands cannot pay for higher scores.
Is KibbleLab a substitute for veterinary advice?
No. KibbleLab provides data-driven food analysis, not medical advice. Always consult your veterinarian before making dietary changes, especially for pets with health conditions.
KibbleLab provides informational content only. This is not veterinary advice. Always consult a qualified veterinarian before changing your pet's diet.
KibbleLab may earn affiliate commissions through product links. No one can pay for a higher score, or to change what we recommend for your pet.
Product data sourced from manufacturer websites, AAFCO statements, and FDA recall database. Last verified dates reflect our most recent data check.
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