At a Glance
Functional mushroom supplements are becoming increasingly popular among dog owners seeking natural support for canine immunity, digestion and overall wellness. Products containing mushrooms such as turkey tail, lion’s mane and reishi differ significantly in ingredient quality, extraction methods, probiotic support and transparency, making careful product selection important for long-term pet health.
Why Are Mushroom-Based Supplements So Popular?
The global pet supplement market is thriving, and one of the standout categories is mushroom-based supplements. More dog owners are choosing these supplements as a natural way to support their canines’ immune systems, digestion, cognitive function and overall well-being and vitality.
But what makes these mushrooms so special?
Functional mushrooms, such as turkey tail, lion’s mane, reishi, maitake, chaga and cordyceps, contain beta-glucans and antioxidants with the potential to support canine health.
However, not all mushroom supplements are created equal. The real difference lies in how the ingredients are sourced and extracted, what functional ingredients are added and how transparent the brand is.
If you’re a dog parent looking for mushroom-based canine supplements, our article compares the five leading brands.
1. Milo Naturals
Milo Naturals is a turkey tail mushroom supplement with added probiotics to support your dog’s immunity, digestive system and overall wellness. It was created by Matthew, a devoted pet owner, when his dog, Milo, began developing unsightly lumps and bumps. While battling a wave of helplessness in this challenging time, Matthew researched the healing potential and immune-boosting properties of turkey tail mushrooms. This supplement helped shrink Milo’s lumps and improve his health, resulting in the brainchild Milo Naturals, with the aim of helping dogs live healthier, longer lives, naturally.
Unlike many of its competitors, which focus on mushroom blends, Milo Naturals combines turkey tail mushrooms with added probiotics to create a more complete daily wellness blend.
Including probiotics in canine supplements is a valuable addition because it helps improve gut health, which is closely linked to immune health. Giving this supplement to dogs helps them gain both digestive and immunity-linked benefits.
Strengths
- 100% natural ingredients without any fillers or additives
- Turkey-tail focused immune support with verified 40% beta glucan
- Added probiotics (Bacillus Coagulans strain) for digestive health
- Clean ingredient profile
- UK 3rd party tested
- Easy to administer powder option
- Vet approved
- Visible improvements reported by many dog owners
Limitations
- Higher one-off purchase price
- Free shipping in the UK only for orders over £40
Pricing
Starts from £33.99 per pouch. Mid-premium-range pricing, but offers strong value given the added probiotic support and multiple benefits.
Customer Review
Here’s what a customer, David Littleton, has to say about using Milo Natural’s products:
“Very professional company, provided 3rd party testing when asked, and I am very happy to be using their turkey tail mushroom for my dog, not many companies show this level of transparency.”
2. Petsmont Buddy Guard
Petsmont Buddy Guard is a mushroom-based supplement featuring multiple functional mushroom sources built for supporting a dog’s immune system and overall well-being.
This mushroom powder includes a broad-spectrum formula featuring multiple medicinal mushrooms designed to support canine immunity. It markets itself as a blended natural wellness supplement for dogs across different life stages.
Strengths
- Broad mushroom variety blend
- Focused on strengthening canine immunity
- Available as powder, which can be mixed easily with food
- Pleasant flavour
Limitations
- Less digestive support
- Needs more ingredient transparency
- Priced as a premium but without additional functional ingredients
Pricing
One-time purchase starts at USD 32.54, which is approximately £24.29.
3. Four Leaf Rover
With a strong reputation in the holistic pet wellness spaces, Four Leaf Rover is a mushroom-based canine supplement formulated to support dogs’ overall well-being.
Their Seven Shrooms formula focuses on organic ingredients and premium sourcing of multiple medicinal mushrooms, including reishi, lion’s mane, maitake and turkey tail.
Strengths
- Focused on high-quality, organic ingredient sourcing
- Includes seven multiple mushroom species such as reishi, lion’s mane, maitake, turkey tail, cordyceps, shiitake, phellinus and chaga
- Uses whole mushrooms, including the important fruiting body
- Positioned as high in immune-enhancing polysaccharides and beta-glucans
Limitations
- Smaller serving size related to price
- High price points may not fit all budgets
Pricing
One-time purchase starts at USD 34.99, which is approximately £24.29.
4. Fifth and Fido
Fifth and Fido offers a turkey-tail mushroom-based natural supplement for dogs, designed to support your pet’s digestive and immune health.
Their Turkey Tail+ mushroom-based supplement’s formula is centred around turkey tail and reishi mushrooms. It also contains added probiotics to support digestion and absorption.
Strengths
- Simple formulation of turkey tail and reishi mushrooms
- Includes Lactobacillus Acidophilus as a probiotic
- Offers a 90-day money-back guarantee
Limitations
- Fewer advanced functional ingredients
- Less comprehensive wellness support
Pricing
One-time purchase starts at USD 49.98, which is approximately £37.31.
5. Fera Pets
Fera Pets is a pet wellness brand that offers a wide range of supplements for cats and dogs.
It markets its mushroom-blend-based supplement for canine immunity, longevity, and digestive health. It differentiates itself through its USDA organic blend positioning and clean-label appeal, which resonates with pet parents who prefer organic ingredient profiles.
Strengths
- A USDA organic mushroom blend supplement
- Formulation includes a blend of organic Lion’s Mane, Red Reishi, Shiitake, Cordyceps, Maitake, Turkey Tail, Chaga, Oyster, Poria and Tremella mushrooms
- Claims clean-label ingredients
- Suitable for dogs and cats
Limitations
- Smaller container sizes
- Higher price point
Pricing
One-time purchase starts at USD 34.95, which is approximately £26.09.
A Quick Checklist – What to Look for in a Mushroom-Based Supplement
Pet owners should prioritise:
- High-quality mushroom sourcing
- Fruiting body extracts
- Transparent ingredient lists
- Third-party tested
- Zero to minimal fillers
- Functional complementary ingredients
In Summary
Ongoing veterinary research and wellness resources continue to highlight the growing interest in and popularity of medicinal and functional mushrooms for a dog’s overall immune health, digestive support, cognitive function and healthy ageing. When chosen carefully, mushroom-based supplements can be a valuable addition to your dog’s wellness routine.
However, do ensure to consult your vet before starting your pet on any supplements.

