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Mushroom for Dogs: 4 Key Benefits

Wondering about the potential benefits of mushroom for dogs? In this helpful article, reviewed by canine nutrition expert Dr Thurman Legend, we explore how mushrooms might help support your dog’s digestive function and overall wellness as part of a healthy diet and active lifestyle.

8 min read·Updated: Feb 09, 2026
Mushroom for Dogs: 4 Key Benefits

Certain canine-edible mushrooms can provide naturally occurring fiber, antioxidants, and nutrients that may help support a dog’s digestive function, normal bowel movements, immune wellness, and overall wellbeing when used consistently as part of a balanced diet. PetLabCo.’s expert-reviewed Pumpkin Fiber Blend includes pumpkin, psyllium husk, apple fiber, and a carefully selected tri-mushroom blend of King Oyster, Shiitake, and Maitake mushrooms. Together, these ingredients may help support gut health, colon health, and stool regularity in dogs. Pet parents can subscribe to PetLabCo. Pumpkin Fiber Blend for up to 40% off RRP.

Save up to 40% across the PetLabCo. product range - subscribe to our top selling dog supplements
Save up to 40% across the PetLabCo. product range – subscribe to our top selling dog supplements

Veterinary insight:

Canine-appropriate mushrooms can provide fiber, antioxidants, and immune-supporting compounds, but benefits develop gradually and should always be paired with a balanced diet and veterinary guidance.”
Dr. LEGEND
US DVM, MSL, CVBP, MRCVS

What Are The Key Potential Benefits of Mushroom for Dogs?

Certain edible mushrooms contain soluble fiber, antioxidants, vitamins, minerals, and bioactive compounds that may support normal digestive and immune function in dogs. When included as part of a high-quality, dog-specific supplement, mushrooms may help:

  • Support gut health and stool consistency.
  • Contribute antioxidants that support normal cellular defences.
  • Provide nutrients that complement a complete, balanced diet.

The type of mushroom matters. Different varieties contain different compounds, which is why PetLabCo. uses a blended approach:

  • King Oyster mushroom – provides fiber and polysaccharides that may support gut microbiome balance.
  • Shiitake mushroom – contributes antioxidants and nutrients commonly associated with immune support.
  • Maitake mushroom – contains beta-glucans linked to antioxidant activity.

Before introducing mushroom-containing supplements, pet parents should consult their veterinarian, especially if their dog is taking medications or has ongoing health concerns. Wild-picked mushrooms should never be given to dogs due to the risk of toxicity.

How Do Mushrooms Benefit Dogs?

When provided in controlled, canine-appropriate forms, mushrooms can be a useful addition to a dog’s wellness routine. They are a natural source of:

  • Soluble fiber, which supports digestive regularity.
  • Antioxidants, which can help support normal cellular health.
  • Vitamins and minerals, including B vitamins, potassium, copper, and selenium.

Veterinary insight:

Mushrooms can be a valuable addition to a dog’s wellness routine when provided in controlled, dog-specific forms, while wild or seasoned mushrooms should always be avoided due to potential toxicity.
Dr. LEGEND
US DVM, MSL, CVBP, MRCVS

Different mushrooms have a range of potential benefits – Shiitake mushroom can support digestive and immune function, while Maitake mushroom can help increase antioxidant activity. Selecting a high-quality, dog-specific supplement that contains canine-edible mushroom is an easy way to include mushroom in your dog’s regular wellness routine.

Benefits tend to develop gradually over weeks to months of consistent use and vary by individual dog.

4 Key Potential Benefits of Mushrooms for Dogs

Save up to 40% on PetLabCo. Pumpkin Fiber Blend for Dogs – contains a beneficial tri-mushroom blend.

Digestive support – mushrooms are a good source of soluble dietary fiber, which may help regulate bowel movements and support gut bacteria.

Gut microbiome balance – mushrooms naturally contain prebiotic compounds, such as polysaccharides and beta-glucans, which can help nourish beneficial microbes.

Immune health support – mushrooms contain beta-glucans and polysaccharides, which may help support immune health.

Nutritional support – mushrooms provide complementary vitamins and minerals that can contribute to a dog’s overall nutrition, such as B vitamins, vitamin D, potassium, copper, and selenium.

Important note: Mushrooms should be used as a compliment to a well-balanced diet. Consult your veterinarian before adding mushrooms, or any other supplemental food, to your dog’s regular routine. They are not treatments or cures for disease.

What Are the Potential Immune Support Benefits of Mushrooms for Dogs?

Certain canine-edible mushrooms contain beta-glucans and polysaccharides that are commonly studied for their role in supporting normal immune function. Mushrooms most often discussed for immune-supportive properties include:

  • Shiitake
  • Maitake
  • Reishi

These compounds are considered supportive, not therapeutic, and their effects may vary depending on consistency of use, formulation, and the individual dog.

How Might Mushrooms Support Digestive Health?

Mushrooms such as Shiitake, Maitake, and King Oyster contain prebiotic compounds that may help feed beneficial gut bacteria. When given consistently alongside a balanced diet, this may support:

  • Digestive regularity
  • Normal stool consistency
  • Gut barrier integrity

Gradual introduction and adequate hydration can help support product tolerance when adding fiber-rich ingredients.

Potential Antioxidant Benefits of Mushroom-Containing Supplements

Some mushrooms, including Shiitake and Chaga, contain antioxidants that may help support normal cellular health. These benefits depend on:

  • Consistent daily use
  • Appropriate quantities
  • Use within a dog-specific supplement

Mushroom Types and Their Potential Benefits for Dogs

Mushroom TypePotential Support
ShiitakeAntioxidant and immune health support
MaitakeAntioxidant activity and immune support
King OysterFiber and microbiome support
ReishiImmune support
CordycepsSupports vitality
ChagaAntioxidant and immune support

Which Mushrooms Are Not Suitable for Dogs?

Wild mushrooms can be toxic and should never be fed to dogs. Mushrooms prepared with salt, butter, oil, garlic, or onions are also unsafe.

If mushroom supplementation is desired, choose a dog-specific product that uses controlled, edible varieties.

Practical Tips for Pet Parents

  • Introduce mushroom-containing supplements gradually.
  • Use alongside a complete, balanced diet.
  • Ensure adequate hydration.
  • Monitor stool consistency and comfort.
  • Consult your veterinarian for dogs with chronic conditions or those taking medication.

Frequently Asked Questions About Mushroom for Dogs

1. Can I give my dog mushrooms from the grocery store?

Store-bought edible mushrooms such as white button, cremini, and portobello, are generally suitable for dogs in small amounts. When fed as whole foods, mushrooms should be cooked plain – not using any garlic, onions, butter, or seasonings. Give a small amount only, and never feed your dog wild mushrooms as these are not suitable for dogs.

2. How long do mushroom-containing supplements take to work?

Every dog is different, but general guidance is to allow a period of 90 days for full potential benefits from daily dog supplements containing mushrooms to be seen in healthy adult dogs. 

3. Are mushroom-containing supplements suitable for all dogs?

Most healthy adult dogs can have daily supplements that contain mushroom, when these are given according to instructions. If you are unsure, consult your veterinarian.

4. Can I combine mushroom-containing supplements with other supplements?

Yes, most dogs can have supplements that contain mushroom alongside other supplements. For instance, PetLabCo.’s Pumpkin Fiber Blend, which contains a unique tri-mushroom blend, can be given alongside other PetLabCo. products, including PetLabCo. Probiotic Chew

5. Which mushroom is best for dogs?

There is no single “best mushroom” for dogs – different mushrooms support different functions. For example, Turkey Tail offers immune support, while Reishi mushroom provides immune and liver support, and Shiitake mushroom provides immune and nutritional support. Because different mushrooms provide different benefits, many reputable supplement companies formulate blends that include a multi-mushroom blend, like the tri-mushroom blend in PetLabCo.’s Pumpkin Fiber Blend.

6. What Do I Do If My Dog Eats a Wild Mushroom?

If your dog eats a wild mushroom, contact your veterinarian immediately. If possible, collect a sample of the mushroom to help with identification. Monitor your dog closely for any changes in behaviour or signs of stomach upset, and seek professional help immediately if you’re worried.

Final Thoughts: Key Potential Benefits of Mushrooms for Dogs

When chosen carefully and used consistently, certain canine-appropriate mushrooms may provide digestive function, immune health, and wellbeing benefits for dogs. Benefits are supportive and proactive, not curative, and develop gradually over time.

Because not all mushrooms are suitable for dogs, it’s essential to avoid wild fungi, and instead rely on dog-specific supplements formulated with expert guidance. As with any wellness product, consistency, quality, and professional advice make all the difference.

Sources

National Veterinary Services (NVS). The Microbiome in Companion Animals: The Foundation of Systemic Health.
https://www.nvsweb.co.uk/blog/the-microbiome-in-companion-animals-the-foundation-of-systemic-health/

Suchodolski, J. S. Analysis of the Gut Microbiome in Dogs and Cats. Veterinary Clinical Pathology, 51(1), 6–17.
https://doi.org/10.1111/vcp.13013

Yan, F., & Polk, D. B. Probiotics and Probiotic-Derived Functional Factors: Mechanistic Insights Into Intestinal Homeostasis. Frontiers in Immunology, 11, 1428.
https://doi.org/10.3389/fimmu.2020.01428

Encyclopaedia Britannica. Beta-glucan.
https://www.britannica.com/science/beta-glucan

Encyclopaedia Britannica. Mushroom – Nutritional Properties.
https://www.britannica.com/science/mushroom-fungus/Nutritional-value

Friedman, M. Mushrooms: Nutritional Value and Health Benefits. Journal of Agricultural and Food Chemistry.
https://pubs.acs.org/doi/10.1021/jf703031s

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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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