Turkey Tail Mushroom Extract

Turkey Tail Mushroom Extract is a single-species organic mushroom supplement for dogs — a concentrated immune-support powder made from 100% whole, certified organic Turkey Tail (Trametes versicolor) fruiting bodies grown on natural wood substrate. Third-party tested to contain a minimum of 50% beta-glucans, it delivers the highest guaranteed beta-glucan concentration across the entire Four Leaf Rover mushroom range.

Turkey Tail has been used in traditional Chinese medicine for centuries and is one of the most extensively researched medicinal mushrooms. Its active compounds — polysaccharide-K (PSK) and polysaccharide peptide (PSP) — help modulate the immune system, support gut microbiome balance, and maintain healthy inflammatory responses. Available in 50g.

Most mushroom supplements on the market are not really mushrooms. They're mycelium — the root-like structure of the fungus — grown in plastic bags of oats, sorghum, or rice, then ground up together with the grain. The result is a powder that is mostly starch, with minimal actual mushroom content. Beta-glucan levels in these products are typically low because the active compounds live primarily in the mushroom's fruiting body, not the mycelium.

Four Leaf Rover Turkey Tail is made from the whole, mature mushroom — fruiting body and all — grown naturally on wood in filtered-air greenhouses. No grain substrate. No hidden starch. Just concentrated mushroom. This is why the beta-glucan content can be guaranteed at 50%+ per batch, where mycelium-on-grain products often struggle to reach double digits.

Turkey Tail's beneficial compounds divide into two categories: water-soluble beta-glucans (PSK, PSP) and alcohol-soluble triterpenes. A single extraction method only captures half the story. Four Leaf Rover uses a double-extraction process — water extraction to capture the beta-glucans, alcohol extraction to capture the triterpenes — then combines them into a single powder. The result is a supplement where the full spectrum of Turkey Tail's active compounds is bioavailable to your dog.

Beta-glucans are the active immune-modulating compounds in medicinal mushrooms. When evaluating any mushroom supplement, the question to ask isn't "how many milligrams of mushroom?" — it's "what's the beta-glucan content?" Polysaccharides alone are meaningless; starch itself is a polysaccharide. Four Leaf Rover's third-party testing guarantees a minimum of 50% beta-glucans in every batch of Turkey Tail — the highest guaranteed content in the Four Leaf Rover mushroom range and among the highest in the industry.

Supports immune modulation. PSK and PSP — the signature beta-glucans in Turkey Tail — help activate immune cells and regulate immune response. Unlike immune stimulants that push in one direction, Turkey Tail is a modulator: it supports balance in both underactive and overactive immune states.

Supports gut microbiome balance. Turkey Tail has prebiotic properties, feeding beneficial gut bacteria and supporting a healthy gut flora. This is part of why it pairs well with Four Leaf Rover's probiotics — it complements rather than competes with microbial support.

Supports normal inflammatory response. Triterpenes in Turkey Tail help maintain balanced inflammatory function throughout the body — particularly valuable for senior dogs, dogs with chronic immune stress, or dogs recovering from illness.

Supports cellular energy production. Turkey Tail contains compounds that support mitochondrial function and cellular energy metabolism, contributing to overall vitality.

Turkey Tail is the most research-backed, highest-beta-glucan single mushroom in the Four Leaf Rover range — the go-to choice when immune support is the primary goal. It's particularly well-suited to senior dogs, dogs with chronic health challenges, dogs recovering from illness, and dogs whose owners want a targeted, high-potency single-mushroom supplement. For dogs whose primary need is cognitive support, Lion's Mane is the specialist. For dogs needing broader, whole-body mushroom coverage across the gut, liver, kidneys, and immune system, Seven 'Shrooms combines Turkey Tail with six other mushrooms in one formula.

Every batch of Turkey Tail is third-party tested for beta-glucan content, pesticides, heavy metals, and microbial contaminants, with a Certificate of Analysis available on request. Four Leaf Rover holds the NASC Quality Seal — the benchmark for quality control in the pet supplement industry — and is certified Plastic Negative by rePurpose Global, removing twice the plastic from the environment that it creates. Manufacturing is GMP-compliant.

Active ingredients. Source: Four Leaf Rover.

Organic Turkey Tail (Trametes versicolor) Mushroom Extract — fruiting body, double-extracted, guaranteed minimum 50% beta-glucans.

Free from: grain, mycelium-on-grain fillers, preservatives, synthetics, artificial flavourings, artificial colourings, GMO ingredients, gluten, and dairy.

Add to food once daily. Measure according to your dog's body weight using the guide below.

For cats over 6 months, give half the small-dog dose daily. A 50g jar typically lasts anywhere from around one to several months depending on your dog's size.

Store in a cool, dry place away from direct sunlight. Refrigeration is not required but will help maintain freshness over time. Keep the lid tightly sealed.