Mushroom Max Soft Chews Supplement for Dogs and Cats
Verified Jun 9, 2026
This is a mushroom-based soft chew supplement for dogs and cats over 12 weeks of age, aimed at supporting immune and overall health. It uses a blend of reishi, shiitake, turkey tail, and maitake mushrooms, along with added antioxidants like vitamins A, C, E, selenium, milk thistle, and CoQ10. The soft chew format makes it easy to give as a daily add-on alongside a complete and balanced diet.
This is a thoughtfully formulated immune and antioxidant supplement that can be a reasonable add-on for generally healthy dogs and cats when used alongside a complete pet food. The mushroom blend plus vitamins and selenium provides a broad spectrum of antioxidant support and may appeal if you’re looking for a non-powder, chewable format. As with any supplement, it’s best used under your veterinarian’s guidance, especially if your pet has medical conditions or is on 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
- Contains multiple medicinal mushrooms (reishi, shiitake, turkey tail, maitake), which are commonly used for immune and antioxidant support in veterinary and human supplements.
- Includes several key antioxidants (vitamins A, C, and E, selenium, CoQ10, and milk thistle) that can help support normal cellular function and defense against oxidative stress.
- Soft chew format is generally palatable and easy to dose for both dogs and cats, with weight-based dosing instructions for a wide size range.
- Free of common protein allergens like beef and chicken in the active ingredients, which may be helpful for pets with those specific food sensitivities (though the base chew still contains yeast and flaxseed).
Considerations
- This is a supplement, not a complete and balanced diet, so it should only be used in addition to a regular, nutritionally complete pet food.
- Yeast and flaxseed are present in the inactive ingredients; if your pet has had sensitivity to yeast or seeds in the past, this may not be the best choice.
- High doses of antioxidants and mushrooms may not be appropriate for all pets, particularly those with liver disease, bleeding disorders, or on certain medications, so checking with your veterinarian before starting is important.
- The product is labeled for pets over 12 weeks of age; it is not intended for very young puppies or kittens.
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
Reishi Mushroom
Reishi mushroom is used in pet foods and supplements as a functional ingredient rich in polysaccharides (notably beta-glucans) and antioxidants, primarily to support immune function and provide anti-inflammatory and adaptogenic effects rather than as a protein or vitamin source. While some studies and anecdotal reports suggest benefits for dogs and cats, evidence in pets is limited and quality/strength of extracts varies, so owners should consult their veterinarian—especially if their animal is on immunosuppressive drugs, has an autoimmune condition, or shows signs of allergy or digestive upset.
02
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.
03
Turkey Tail Mushroom
Turkey Tail mushroom is used in pet foods and supplements as a functional, medicinal ingredient providing bioactive polysaccharides (notably beta‑glucans and PSK/PSP) and prebiotic fibers to support immune function and gut microbiome health rather than serving as a primary protein or vitamin source. It may offer antioxidant and immune‑modulating benefits for dogs and cats, but should be food‑grade and quality‑tested, used at appropriate doses, and discussed with a veterinarian—especially for pets on immunosuppressive drugs or chemotherapy—since interactions and gastrointestinal upset can occur at higher intakes.
04
Maitake Mushroom
Maitake (Grifola frondosa) is used in pet foods as a functional ingredient that contributes dietary fiber, trace minerals and bioactive polysaccharides (notably beta‑glucans), and is included more for potential immune‑supportive and antioxidant properties than as a primary protein or energy source. It is generally regarded as safe when properly sourced and cooked, but can cause gastrointestinal upset in some animals, may interact with immunosuppressive or blood‑glucose‑lowering medications, and owners should consult their veterinarian about use and product quality before regular feeding.
05
Milk Thistle
Milk thistle is an herbal supplement used in some pet foods and supplements for its liver-supporting and antioxidant properties, with the active component silymarin thought to help protect liver cells and support detoxification. It is a supportive, non-essential ingredient rather than a nutrient, so pet owners should consult a veterinarian before use because effectiveness can vary by product and dosage, and it may interact with medications or cause mild gastrointestinal upset or allergic reactions in some animals.
Product Details & Brand
Product Specs
Brand
NaturVet is a leading brand of pet supplements offering a wide range of products for dogs, cats, and horses, focusing on natural health support including joint, digestive, allergy, and behavioral care. The brand targets pet owners seeking holistic, natural, and vet-formulated wellness solutions.
Visit NaturVetManufacturer
NaturVet manufactures products in-house at its Temecula, California facility that is compliant with current Good Manufacturing Practices (cGMP). The company maintains NASC (National Animal Supplement Council) certification, ensuring standardized manufacturing, ingredient safety, and product quality.
Manufacturing details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing.
Recall History
NaturVet Mushroom Max Soft Chews Supplement for Dogs and Cats has no recalls since 2014.
Source: FDA Pet Food Recall Database · Monitored daily
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Frequently Asked Questions
Has NaturVet ever been recalled?
We have no recalls on record for NaturVet. 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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