Bestseller

Flourish

  • Immunity
  • Sleep
  • Metabolism

4.8 (179 customer reviews)

Calmer evenings, year-round resilience. Tested for what’s in it — and what isn’t.

60 capsules · 30 days supply

How would you like it?

Why most customers choose regular shipments:

Pause, swap or cancel any time
No contract or minimum order
  • Delivery on us every 30 days
  • Starter kit worth £62.99
  • Home-compostable refills thereafter

Included in your kit

  • Flourish, 30-day supply £47.00£32.90
  • Refillable borosilicate glass jar £14.00Free
  • Pocket Mushroom Guide Free
  • Royal Mail delivery £1.99Free

What’s included

  • Compostable capsule pack
  • One month supply

  • Ships same day
  • Delivery on us
  • 60-day guarantee

I tend to be skeptical about supplements, but Flourish has earned its spot. The benefits have been very noticeable - better sleep, better immune system, better mood.

Joy Reviewed Apr 2024

Here it’s all on the label and the batch test is on the website. Took two in the evening for six weeks… the difference is I’m not awake again at 4.

Tom H Reviewed May 2025

Usually by February I’m exhausted… This year has been noticeably different. I’m sleeping well, I’ve got energy at the weekends and I haven’t had that wiped out feeling once.

Janine B Reviewed Feb 2026

Not a supplements bloke. Missus makes sure I take two a night and it’s been about two months. Sleeping better, no question, and I’m less grumpy first thing, although she might dispute that.

Mick R Builder · Jul 2026

Independently certified

Soil Association Organic
B-Corp pending
Third-party lab tested

Ingredients Full product spec

  • ReishiOrganic · 16:1 extract
  • MaitakeOrganic · 8:1 extract
  • >1%Ganoderic acids
  • >30%Beta-D-glucans

About Flourish

Flourish is an evening formula of high-strength, certified organic 16:1 Reishi and 8:1 Maitake extract, selected for their complementary effects on immune function, sleep quality, and metabolic resilience—ideal for those building a strong foundation for long-term health.   

Reishi and Maitake Benefits

  • Immune Modulation

    Maitake's beta-glucans (>30%) mobilise NK cells, monocytes, and neutrophils—your body's first responders. Reishi's triterpenes and different beta-glucan structures coordinate the broader immune response. Research combining mushrooms with these complementary profiles shows enhanced immune markers at concentrations ten times lower than single extracts.

  • Restorative Sleep

    Reishi's ganoderic acids stimulate GABA receptors—the same pathway your nervous system uses to calm itself. This neurological settling promotes quality rest and natural sleep patterns.

  • Metabolic Support

    Maitake contains grifolan, a glycoprotein that influences glucose metabolism and insulin sensitivity. Combined with Reishi's cardiovascular support through ACE inhibition, you're supporting multiple pathways for metabolic flexibility.

Flourish is a deliberate pairing. Reishi and Maitake have complementary beta-glucan structures that work through distinct receptor systems. In laboratory studies, combinations of these mushrooms achieve immune activation ten times more efficiently than either mushroom alone.

Each two-capsule serving provides a clinically meaningful, lab-verified dose: 7,200mg Reishi equivalent (16:1) and 3,600mg Maitake equivalent (8:1)

The Functional Mushroom Company is committed to unparalleled standards—delivering scientifically substantiated, potent mushroom supplements. Each product is rigorously researched and ethically sourced, embodying our dedication to purity and efficacy for individuals who prioritise integral health and genuine quality.

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Ingredients and full panel

Independent testing

Third-party lab reports.

Our extracts are tested by an independent laboratory for heavy metals, pesticides, microbes and solvents. The full report and our organic certificate are below.

Batch dossier

Latest results

01 · Purity

Contaminant panels

Heavy metals
Clean
Pesticides
Clean
Microbials
Clean
Solvents
Trace remnants

Note: these contaminant results are from a combined sample.

Full test results PDF · 4.5 MB · Batch 26060025 Opens in a new window Latest organic certificatePDF · 230 KB · Licence DA31648 Opens in a new window

02 · Commitment

We're confident these are the highest quality mushroom extracts available anywhere in Europe. If you find a more potent product, we'll refund every order you've ever placed with us.

Every order · no time limitHow it works

Carbon-neutral shipping Method

Us versus them

Why we’re different.

This is a hard product to make properly — months of cultivation, then extraction that takes real expertise — and a very easy one to fake: gummies, tinctures, ten-species blends at doses too small to matter. In one study, 74% of mushroom supplements didn't contain what the label claimed.

We publish the things that can be checked: what's in the capsule, who measured it, and what they found. Four of them are listed here. Run the same four on anyone else.

Authenticity
Fingerprinted Mislabelled
NMR-verified every batch — what's on the label is in the bottle

74% didn't match the label in one published test¹

Format
Capsules in glass Format varies
A fixed dose in capsules, in amber glass

Gummies, tinctures, loose powder

Dose
Meaningful dose Undisclosed
Therapeutic doses, disclosed in full

Weak doses in kitchen-sink blends

Contaminants
Four panels None published
Heavy metals, pesticides, microbials, solvents

Supplier paperwork (i.e. take their word for it), or nothing published

¹ Wu D. et al., Scientific Reports, 2017.

How to read a label

7 signs of a high quality mushroom extract

Mushroom supplements vary in quality more than almost any other category. Unlike creatine or magnesium — simple compounds, easy to standardise — mushrooms contain hundreds of bioactive compounds that demand the right growing conditions, careful extraction, and independent verification for each species.

Here's what to look for

Bioactive compounds

Know what you're buying

Look for species-specific markers: hericenones in Lion's Mane, ganoderic acids in Reishi, cordycepin in Cordyceps. These are what you're paying for. If a label doesn't specify, the product probably doesn't contain meaningful amounts.

Species verification

DNA and NMR testing

A 2017 study of 19 commercial reishi products found 74% did not contain what the label claimed.¹ DNA or NMR testing confirms you're getting the actual species — not a cheaper substitute. Our Lion's Mane extract carries Purity-IQ's Certified Authentic mark, which covers identity, purity and batch-to-batch consistency.

Purity-IQ: our authenticated extracts(opens in a new tab)

Clear extraction method

Bioavailability starts here

Mushroom cell walls are made of chitin — the same substance that gives crab shells their hardness. Without proper extraction, your body can't absorb them. Many brands sell dried powder with no extraction at all. This ends up being very expensive fibre.

See cultivation & processing

Honest concentration ratio

High numbers aren't always better

Extraction concentrates mushroom — 8:1 means 8kg of raw mushroom reduced to 1kg of powder. How far a species can be concentrated and still hold as powder varies: Lion's Mane tops out around 8:1; Reishi is stable well beyond it. A ratio with no measured bioactive beside it is a number, not evidence.

See the batch dossier

Format matters

How it's delivered affects what you absorb

Gummies require heat and additives that degrade sensitive compounds. Tinctures are mostly water and alcohol, so deliver small doses. Capsules protect compounds from degradation and deliver measurable, consistent amounts.

See the materials catalogue

Third-party tested

Potency, purity, heavy metals, microbial

Independent lab verification of potency, purity, heavy metals, and microbial contamination. If a company won't share their batch reports, ask why.

Download the test results

Certified organic

The substrate is audited, the result is tested

Mushrooms hyperaccumulate compounds from their environment — good and bad. Organic certification audits the growing medium; independent testing checks the result. Look for an established certifying body like the Soil Association.

See the organic certificate

Cultivation & processing

Two species, two protocols.

Reishi from buried oak logs, extracted 16:1 in hot water and ethanol; Maitake grown indoors, extracted 8:1 in hot water. Both cut before spore drop.

Protocol sheet · rev. 08 · two species

GL-01 01 / 02
Reishi fruiting bodies
Reishi
Ganoderma lingzhi

Fruiting body only. First-season fruit from short oak logs buried under forest shade, cut as the white rim closes with no spore-collection hold. Dual extract in hot water and ethanol.

Logs
Organic oak · felled in winter · steam-sterilised
Spawn run
22–28°C · dark · 60–90 days
Burial
Sandy soil · 1–3 cm cover · ~70% shade
Fruiting
24–28°C · 85–95% RH
CO₂
≤1,000 ppm · kidney-shaped caps
Harvest
White rim gone · before spore drop
Drying
40–50°C · ≤12% moisture
Learn more about Reishi
GF-01 02 / 02
Maitake fruiting body
Maitake
Grifola frondosa

Fruiting body only. One flush per bag, grown indoors on oak or beech sawdust with CO₂ held under 800 ppm, cut before the spores drop and dried the same day. Hot-water extract.

Substrate
Organic oak or beech sawdust + 22% wheat bran
Spawn run
22–23°C · dark · 30–35 days
Ripening
22°C · ~50 lux · 2–6 weeks
Induction
16–18°C · 90–95% RH · 7–10 days
Fruit room
16–18°C · 90% RH · 500 lux, 12 h
CO₂
≤800 ppm in fruit
Harvest
Pores just formed · fronds firm · before spore drop

FAQ

Common questions.

These are the questions we get asked most.

Where are your mushrooms sourced?

Our mushrooms are sourced from the pristine, remote mountain regions of Southeast China, an area celebrated for its rich heritage and long-standing expertise in cultivating medicinal mushrooms.

This location, far removed from industrial areas, allows us to harvest organic certified mushrooms of the highest quality. Emphasising purity and potency, we select only the finest mushroom fruiting bodies, grown and wild-harvested in carefully protected environments.

Are your mushroom extracts made from mycelium or fruiting body?

We’ve chosen to focus exclusively on utilising the fruiting bodies of mushrooms for our extracts. While mycelium, the vegetative part of fungi, does possess beneficial properties, the industry-wide practice of growing mycelium on grain substrates (known as myceliated grain) often results in products with high starch content and significantly diluted levels of active mushroom compounds. This dilution potentially compromises the health benefits that these compounds can offer.

To avoid any ambiguity in the potency and purity of our products, we therefore opt for mushroom fruiting bodies. These parts of the mushroom are not only the most recognised and studied but are also rich in crucial bioactive compounds such as beta-glucans and triterpenes.

What is the recommended dose?

Our standard recommended dose is 1000 mg(about 1/2 teaspoon or 2 capsules) per day for general health and immune support. This dosage can be adjusted according to individual health needs and goals. It is important to consult with a healthcare professional for personalized advice, especially if you have specific health conditions or are taking other medications.

Should I take functional mushroom supplements with food or on an empty stomach?

It is generally recommended to take mushroom supplements on an empty stomach for optimal absorption of the active compounds. However, individual responses can vary, and some people may prefer or require taking them with a small amount of food. Listening to your body and making adjustments as needed is key, and consulting with a healthcare professional can provide additional guidance tailored to your specific needs.

How long should I take mushroom supplements?

Mushroom supplements are best taken consistently over an extended period — as part of a daily routine, rather than as a quick fix.

I'm not feeling anything, are they working?

Medicinal mushrooms, as adaptogens, generally show their effects over time with consistent use. The body’s response to these compounds varies from person to person; some may experience benefits within weeks, while for others it might take longer. Consistent, long-term use is key to experiencing the full range of benefits these mushrooms offer.

I'm nervous to start using mushrooms. Are there any side effects or safety considerations?

Medicinal mushrooms have been used safely for thousands of years. While allergic reactions or sensitivities are rare, they can occur. We recommend individuals who are taking medication or have preexisting health conditions consult with a healthcare practitioner before starting mushroom supplements.

What are the capsules made from?

Our capsules are made from hydroxypropyl methylcellulose(HPMC), a plant-derived material. This choice is in line with our commitment to natural, environmentally friendly, and health-conscious practices. HPMC is suitable for a variety of dietary preferences, including vegan, kosher, and halal diets, and is free from animal products, making it an excellent choice for those who prefer or require plant-based supplements.

Where can I download your lab reports?
Why don't you sell liquid extracts/tinctures?

The decision not to sell liquid extracts or tinctures is grounded in our commitment to offering the most potent and effective mushroom products. Most liquid tinctures on the market are predominantly composed of alcohol and water, with active mushroom compounds comprising only a small fraction of the total product. This means that customers are often paying for a product where the majority is water and alcohol, not the beneficial mushroom compounds. 

Additionally, the vast majority of scientific research on the benefits of medicinal mushrooms is based on studies using hot water or dual extracts in powdered form. This body of research supports the efficacy of powdered extracts over liquid forms in delivering health benefits. By focusing on powdered extracts, we ensure that our products are aligned with scientific evidence and provide a higher concentration of active compounds, offering greater efficacy and value to our customers.

What is the shelf-life of your products?

Our products have a shelf life of 36 months after opening. To ensure optimal preservation, they should be stored away from intense heat and light. 

Do you accept returns?

We accept returns within 30 days of delivery, provided the items are unused and in their original condition. Please note that we cannot accept returns of opened packages. While customers are responsible for the return shipping costs, we are committed to ensuring a smooth and fair return process. In cases of damaged or defective items, we request customers to contact us immediately for resolution, including replacement or refund as appropriate.

I have so many more questions, where do I find the answers?

You can find a comprehensive FAQ section on our website that addresses a wide range of common inquiries.

More questions Show fewer

TFMC

The power of mushrooms, advanced by mycologists.

The company manifesto, in seventy-four seconds. Filmed at Tremenheere Sculpture Gardens, near Penzance in west Cornwall.

1:14
Tremenheere Sculpture Gardens, Cornwall16:9 · Sound on

The company manifesto, in seventy-four seconds. Filmed at Tremenheere Sculpture Gardens, near Penzance in west Cornwall.

Component by component

Materials catalogue

The four things in the box, what each one is made of, and what to do with it when it is empty.

Reviews

Customer reviews

Taking Flourish? Share how it's going.

Photo of Flourish sent by Tom Hadley
Photo 1 of 5

Highlight

I read ingredient labels for fun, which tells you what sort of person I am. Most 'sleep' blends I looked at hide behind a proprietary mix so you've no idea how much reishi you're getting. Here it's all on the label and the batch test is on the website. Took two in the evening for six weeks before writing this. I fall asleep about as quickly as before, the difference is I'm not awake again at 4. Delivery was two days and the bottle is far nicer in person than the photos.

Tom Hadley8 May 2025

Photo 1 of 5

179 customer reviews

11 Apr 2024

5.0

Immune system and fertility boost

Since the covid pandemic I’ve felt like my immunity has been low, so I bought a subscription of the Flourish supplements as I wanted to improve and maintain my foundational health and immunity and I’ve read how reishi and turkey tail are very beneficial for this. I have also bought a subscription to the Ignition Blend coffee as I am trying to conceive and wanted to switch to decaf and thought I would benefit from the added cordyceps as it is a mushroom which is meant to be good for fertility as it can help regulate hormones. It is also the only mushroom coffee I have found which is hand roasted and can brewed as fresh coffee. As opposed to mushroom coffee from other brands which come as instant coffee and don’t taste very good. This coffee is delicious and it keeps me sharp. I have been taking both these products for 3 months now and I have been feeling less run down, but what I have noticed the most is how much more balanced in terms of mood and energy I have been feeling since taking them. I am really pleased with the quality of these products and have also enjoyed the quality of the design. I enjoy refilling my beautiful amber apothecary-like bottle of animate capsules every month. They look very good on my shelf.

Carolina Caicedo

15 May 2024

5.0

I'm a cancer patient and read multiple studies that support the use of Wild Turkey Tail mushrooms to supplement chemotherapy. The key compounds are PSP and PSK.

The results collectively suggested that PSK serves as an immune modulator to enhance the effectiveness of adjuvant chemotherapy. The PSK groups demonstrate significantly longer survival compared to control groups.

While I've only been taking them for two weeks, I have noticed improved stability regarding my digestive system.

Time will tell if they're effective in prolonging my long-term survival.

All that said, I'm pleased with the way the product is presented and this particular capsule from The Functional Mushroom Company offers their 'Flourish' Capsule of which I take two daily in the morning.

According to the product details, these two capsules contain equivalent to 3600mg of Turkey Tail, and 7200mg of Red Reishi. Both are used in cancer treatment.

So far, I recommend this product on subscription as it will save you money, and medical sources suggest a common dose of 3 grams per day for 36 months.

Matthew Ward

26 May 2024

5.0

Proper quality

I've been interested in the health benefits of medicinal mushrooms for a while, but I've been hesitant to try them because I wasn't sure about the quality of the products on the market. That changed when I discovered The Functional Mushroom Company and their Flourish supplement. The attention to detail and commitment to quality is evident in everything from the sourcing of the mushrooms to the beautiful packaging. I had a few questions before placing my order, and their customer service team was incredibly knowledgeable and helpful. I've been taking Flourish for a few months now, and I've noticed a significant improvement in my immune function and overall energy levels. I feel like I'm better able to handle stress, too. I'm so glad I found this company and this product. Top notch

CC

Showing 4 of 179

Product details

The full panel.

Dose, allergens, certifications and sourcing, spelled out in full.

Full ingredient panel

Each Capsule Contains:

  • Organic Reishi 16:1 Mushroom Extract (Ganoderma lingzhi) 225mg (3600mg equivalent)
    Beta-D-glucans >25%
    Triterpenes >4%
    Ganoderic Acids >1%

  • Organic Maitake 8:1 Mushroom Extract (Grifola Frondosa) 225mg (1800mg equivalent)
    Beta-D-glucans >30%
Dosing guidance

Take 2 capsules each evening before bed on an empty stomach.

Store in a cool, dry place out of direct sunlight. Keep out of reach of children. Not to be taken as an alternative to a balanced diet. Do not exceed the recommended daily dose. Seek advice from a health professional if pregnant or nursing.

Shelf life: 36 months after opening at room temperature

Cultivation & extraction

Our Lion's Mane, Reishi, Maitake and Shiitake extracts are made from fruiting bodies, grown on wood with natural light, fresh air and spring water. Our Chaga is wild-harvested as conks from living birch trees. Our Cordyceps is liquid-fermented mycelium — the form used in the published research.

We use temperature-controlled extraction and vacuum-drying to condense the mushrooms into a high-concentration powder extract. Maitake and Shiitake are extracted in hot water; our other extracts use hot water and ethanol.

Allergens

Contains none of the 14 allergens regulated under UK food law.

The capsule shell is hydroxypropyl methylcellulose (HPMC), a plant-derived material. It is free from animal products and suitable for vegan, kosher and halal diets.

Certifications

Certified organic by the Soil Association, licence DA31648.

Lion's Mane extract carries Purity-IQ's Certified Authentic mark, which verifies identity, purity and batch-to-batch consistency.

Extraction is carried out in a facility certified to cGMP and ISO 22000.

Potency and contaminant testing by Altitude Consulting. B Corp certification pending.

Recycling

Our supplements are packaged in eco friendly mycelium packaging, a material made from mushrooms and straw.

To properly dispose of the packaging, simply break apart and place it in your organics bin or compost heap.

Also true of every batch

Standards we hold ourselves to.

Beyond the assay: how the company is run, what the pack is made of, and what the formula leaves out.

Certified organic
Species authenticated
B Corp pending
Registered vegan
Compostable packaging
Plastic-free packaging
Living wage employer

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