• The Functional Feline Powder for Cats by Real Mushrooms is in a purple container and contains a scoopable 75g blend of 7 Certified Organic mushrooms enriched with Beta-glucans, supporting your cat's whole-body health.
  • The Real Mushrooms Functional Feline Powder for Cats comes in a purple and white container that includes a product facts label detailing active ingredients like certified organic Beta-glucans with precise measurements, expertly crafted to support your cat's whole-body health.
  • The Functional Feline Powder for Cats by Real Mushrooms comes in a purple-labeled container with detailed information, including directions, warnings, and manufacturer details on the back. Enhance your cat's whole-body health with Certified Organic mushrooms formulated by Dr. Rob Silver DVM.
  • Two jars of "Functional Feline Powder for Cats" by Real Mushrooms, enriched for whole-body health, alongside a wooden spoon with the powder. Certified organic mushrooms come in white jars with purple labels.
  • A gray tabby curiously watches as a spoonful of powder, rich in certified organic mushrooms and beta-glucans, is added to a jar labeled "Functional Feline Powder for Cats" by Real Mushrooms on a marble surface, promising enhanced whole-body health.
  • A jar of Functional Feline Powder for Cats by Real Mushrooms, made with certified organic mushrooms and dosing instructions, endorsed by Dr. Rob Silver for optimal whole-body health.
  • A cat sits next to a container of Real Mushrooms' Functional Feline Powder for Cats, highlighting benefits like immune support and stress response. Rich in Beta-glucans and organic mushrooms, it boosts kidney function and overall vitality.
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Functional Feline Powder for Cats

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  • A veterinary-formulated, all-inclusive daily blend for your cat's whole-body health.
  • Made with Certified Organic mushrooms
  • 75g, 60 servings in every container
  • Gluten-Free, Non-GMO
  • Guaranteed Beta-glucans
  • Made in an NSF certified facility in the USA
  • NASC (National Animal Supplement Council) audited and certified
  • Formulated and Designed by Dr. Rob Silver DVM, MS

What Makes It Great

  • A veterinary-formulated, all-inclusive daily blend for your cat's whole-body health.
  • Made with Certified Organic mushrooms
  • 75g, 60 servings in every container
  • Gluten-Free, Non-GMO
  • Guaranteed Beta-glucans
  • Made in an NSF certified facility in the USA
  • NASC (National Animal Supplement Council) audited and certified
  • Formulated and Designed by Dr. Rob Silver DVM, MS
Product Image

All inclusive daily meal topper for cats

Power your cat’s day with Functional Feline:

  • Support kidney & liver health
  • Enhance immune function
  • Support gut health and microbiome balance.
  • Support stress relief
  • Support detoxification
  • Whole-body antioxidant
  • Promotes healthy skin and coat
  • Enhances vitality & longevity

Functional Feline's Multifunctional Advantage

This multifunctional powder blends seven pure functional mushroom extracts, two herbal adaptogens, and a host of other beneficial ingredients to extend your cat's lifespan and overall vitality. Protecting it from tissue-damaging free radicals, improving gut and immune function, plus a calming and settling effect on your cat’s overworked nervous system, Functional Feline is all you need. Administer 1/4 tsp. for your average sized cat once or twice daily, or as directed by your veterinarian.

Key Benefits

Immune System Enhancement

Strong Immunity: The inclusion of mushroom extracts, adaptogens, and seaweed-derived ingredients like fucoiden boost the immune system. A strong immune system is vital for longevity, as it helps pets fight off diseases and maintain overall health.

Overall Vitality and Wellness

Enhanced Quality of Life: By addressing various aspects of health, from immune function to digestive health and stress management, Functional Feline aims to enhance the overall quality of life for cats. This holistic approach to health supports longevity, ensuring cats not only live longer but also enjoy better health throughout their lives.

Digestive Health

Gut Wellbeing: Probiotics like Saccharomyces cerevisiae boulardii and dietary fibers from ingredients like flaxseed meal and chlorella promote a healthy gut microbiome. A well-functioning digestive system is key to longevity, as it ensures proper nutrient absorption and waste elimination.

Antioxidant Protection

Cellular Health: Antioxidants from ingredients like krill meal help to protect the body's cells from oxidative stress, a leading cause of aging. This protection is crucial for maintaining cellular health and function over a cat's lifetime.

Detoxification

Liver and Kidney Support: Ingredients like milk thistle seed and chlorella support the detoxification processes in the liver and kidneys. Effective detoxification is essential for longevity, as it helps to prevent the accumulation of harmful substances in the body.

Hormonal and Stress Management

Adaptogenic Benefits: Adaptogens like ashwagandha root help in managing stress and hormonal balance. By modulating the stress response and supporting adrenal health, these adaptogens contribute to a more balanced and healthy life, extending the cats's longevity.

Joint and Muscle Health

Mobility and Strength: Omega-3 fatty acids from sources like krill meal and flaxseed meal support joint health and muscle strength. Maintaining mobility and muscular health is crucial for the longevity of cats, especially as they age.

Cognitive Function

Brain Health: Ingredients like Lion’s Mane mushroom are known for their neuroprotective properties. Supporting cognitive function is essential for aging cats, helping them maintain a good quality of life.
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Featured Ingredients

Krill Meal (QrillPet™)

What it is: Krill Meal is derived from wild-caught Antarctic krill, a rich source of omega-3 fatty acids, marine proteins, and astaxanthin. How it benefits pet health: It enhances your pet's heart and brain health, supports joint mobility, and contributes to a healthy coat and skin.

Saccharomyces cerevisiae boulardii (Prodigi20™)

What it is: A yeast-based probiotic that is resilient to heat, enhancing gut health. How it benefits pet health: Aids in managing digestive issues like IBD, IBS, and improves stool quality while optimizing the canine microbiome. Research: Gresse, R., et al. (2021): Studied the effects on inflammatory response and bacterial communities. Terciolo, C., et al. (2017): Focused on intestinal barrier integrity regulation. Isidori, M., et al. (2022): Evaluated nonpharmacological treatments for canine chronic inflammatory enteropathy.

Flaxseed Meal (Linum usitatissimum) (Organic)

What it is: An organic source of omega fatty acids, fiber, and plant lignans. How it benefits pet health: Supports cardiovascular health, improves coat quality, and aids in digestive regularity.

Astragalus Root (Organic)

What it is: A traditional herb used in Chinese medicine, known for its immune-boosting properties. How it benefits pet health: Enhances digestive function and immune response, and supports overall vitality.

5 Defenders Mushroom Extract Blend (Organic)

What it is: A blend of five potent mushrooms known for their immune-modulating effects. How it benefits pet health: Boosts immune function, stabilizes mast cell membranes, and supports digestive health.

Lion’s Mane Mushroom (Hericium erinaceus) (Organic)

What it is: A mushroom known for its benefits to brain and digestive health. How it benefits pet health: Enhances cognitive function, memory, and supports the Brain-Gut axis.

Cordyceps Mushroom (Cordyceps militaris) (Organic)

What it is: A mushroom extract that is tasty for pets and offers numerous health benefits. How it benefits pet health: Protects kidneys and lungs, and normalizes hormone functions. Research: Liu, P., et al. (2017): Explored the immunomodulatory effect on patients with Graves’ disease. Dudgeon, W.D., et al. (2018): Studied the effects of supplementation in humans. Jin, Y., et al. (2018): Investigated anti-tumor and anti-metastatic properties.

Ashwagandha Root (KSM-66™) (Withania somnifera) (Organic)

What it is: A vital herb in Ayurvedic medicine known for its adaptogenic properties. How it benefits pet health: Reduces stress and anxiety, supports adrenal and thyroid health, and enhances immunity. Research: Priyanka, G., et al. (2020): Investigated adaptogenic and immunomodulatory activities in animals. Kumar, P., et al. (2022): Explored its anti-inflammatory and antioxidant benefits.

Fucoiden (Marivet™) (Wild-crafted)

What it is: A complex polysaccharide found in brown seaweeds, formulated for animal health. How it benefits pet health: Offers antioxidant support, aids in inflammation management, and supports immune function.

L-taurine (free from amino acid)

It is critical for normal vision, digestion and heart muscle function, for the maintenance of a healthy immune system, and the maintenance of normal pregnancy and fetal development. Taurine is an essential amino acid for cats.

Milk Thistle Seed (Silybum marianum) (Organic)

What it is: A plant seed containing a complex called Silymarin, known for liver health benefits. How it benefits pet health: Promotes liver detoxification and supports overall liver function. Research: Tao, L., et al. (2019): Reviewed Silymarin for drug-induced liver damage. Saller, R., et al. (2001): Explored its use in liver diseases. Vargas-Mendoza, N., et al. (2014): Investigated its hepatoprotective effect.

Chlorella pyrenoidosa (Organic)

What it is: A green algae known for its high nutrient content and health benefits. How it benefits pet health: Supports detoxification, boosts immune response, and offers a rich nutrient profile. Research: Silva, J., et al. (2019): Detailed Chlorella’s health benefits. Chou, M-Y., et al. (2022): Explored potential antidepressant effects in aged mice. Bito, T., et al. (2020): Discussed Chlorella’s potential as a dietary supplement.
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Our Expert Formulator

Dr. Robert Silver, DVM, MS

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.

Nothing To Hide Here.

100% Organic Mushroom Extracts

Always extracted from certified organic mushrooms to unlock the beneficial compounds like beta-glucans and improve bioavailability.

Beta-glucans Verified

Beta-glucans are the most important and abundant compound in these mushrooms so we always verify and guarantee them right on the label.

No Grain Fillers

Unlike myceliated grain alternatives, our products contain absolutely NO grains or starchy fillers.
Real Mushrooms vs. the Competition

Why Beta-Glucans Matter

Beta-glucans are the most abundant and primary active compound found in mushrooms and mycelium.

These complex polysaccharides are where much of the immunological benefits come from which is why it is so important to validate and guarantee beta-glucan content.

A lack of beta-glucans can be attributed to many things like low quality ingredients, improper processing and extraction or the addition of fillers like grains (see alpha-glucans).

All Real Mushrooms products have verified levels of beta-glucans right on the label so you can trust that your getting the benefits you deserve.

†Ratings based on results of the 2024 ConsumerLab.com Survey of Supplement Users. More information at consumerlab.com/survey.

Why we are rated #1 for quality.

Purity. Potency. History.

From a frustration with a lack of quality and transparency in functional mushroom supplements, Real Mushrooms was born.

Read Our Story Best Mushroom Supplement Company

Industry Leaders

Backed by over 40 years of experience, we continue to pioneer functional mushroom supplements supported by scientific research.

Beta-glucans Guaranteed

The beneficial mushroom compounds you want are right on the label.

Zero Grain Fillers

Unlike myceliated grain alternatives, our mushroom extracts contain absolutely NO grains or starch fillers.

Do You Really Know What’s in Your Mushrooms?

Many products that claim to contain mushrooms actually contain none. What they are is the mushroom's root system, known as mycelium, which is grown on grains like rice and oats and this grain cannot be separated from the final product. This residual grain contributes high levels of starch which in turn dilutes the potential for active compounds like beta-glucans.

A 2017 study from Nature on reishi supplements found that 74% of products were inauthentic with 68% containing starch-like polysaccharides (ie. fillers). ConsumerLab also found similar results in their reishi report and found Real Mushrooms to be their #1 choice.

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