Best Reishi Supplement UK (2026): Liquid Extracts Compared on Ratio, Organic and Real Cost

Reishi mushroom is one of the most popular functional mushrooms in the UK - renowned for its benefits for relaxation, stress and sleep. Liquid extracts (tinctures) have become one of the main ways people take it.

They are also hard to compare: bottle sizes differ, doses are measured in pipettes or millilitres, and many brands never say how much mushroom went into the bottle. This guide compares three UK Reishi liquid extracts on extraction ratio, how the mushroom is grown and extracted, testing and real cost per month, and is straightforward about what the human research does and doesn't show.

This guide compares liquid extracts only. Capsule and powder products - which are often imported and hence present far more unknowns regarding their contents - are not covered here.

Quick answer

Look for a Reishi extract that tells you its extraction ratio, uses the fruiting body rather than mycelium grown on grain, and can guarantee the source of its raw mushroom. The ratio matters because it tells you how much mushroom went into each millilitre of liquid: 1:3 means 1g of mushroom for every 3ml of liquid, and 1:4 means 1g for every 4ml, so 1:3 is the more concentrated of the two.

Manapura's Organic Reishi states a 1:3 ratio, dual (water and ethanol) extraction and fruiting body only. It is certified organic by the Soil Association, and the mushrooms are grown and extracted in the UK. Of the three brands compared, it is the most concentrated ratio. Bristol Fungarium is the closest competitor on credentials and states 1:4. Lifecykel does not state a ratio. Per gram of mushroom, Manapura is also the best value of the brands that state one (about £2.28 against £2.80).

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What to look for in a Reishi supplement

Reishi extracts vary widely in what they contain. Before comparing brands, here is what actually matters:

• Extraction ratio: A stated ratio (such as 1:3 or 1:4) is the only way to compare how much mushroom is in two different liquids. If a brand doesn't state one, you can't tell how concentrated the product is. A lower second number means more mushroom per millilitre.
  
  
• Extraction method: Dual extraction uses both hot water and alcohol. The generally stated rationale is that water captures water-soluble compounds such as beta-glucans, while alcohol captures alcohol-soluble compounds such as triterpenes. Reishi is a tough, woody mushroom, so how well it is extracted really matters.
  
  
• Fruiting body or mycelium: The fruiting body is the part of the mushroom that grows above the substrate. Some products use mycelium grown on grain, which can carry leftover grain starch. Some tests that measure total polysaccharides also count that starch, which can make a product look stronger than it is, so you may not be getting what the label implies. Look for a brand that says it contains only fruiting body.
  
  
• Organic and origin: Organic certification, from a body such as the Soil Association, covers how the mushrooms are grown. Check the certificate is current and that it covers the producer of the mushrooms. Many supplements don't say where their mushrooms were grown at all, so a brand that names a UK farm and a UK extraction site is giving you something you can check.
  
  
• Real cost per month: Bottle sizes and doses vary, so the headline price tells you little. The fair comparison is cost per gram of mushroom, or cost per month at the dose the brand itself recommends.
  

Where the evidence on Reishi actually stands

Reishi (Ganoderma lucidum) has one of the longest histories of any functional mushroom. It has been used in China for hundreds of years as a calming tonic, and modern research has looked at sleep, stress, fatigue and immune function.

In studies, an extract of Reishi fruiting bodies increased total sleep time and non-REM sleep time. Animals given a sleep-inducing drug, an alcohol extract of Reishi mycelia shortened the time taken to fall asleep and lengthened sleep. In people, a double-blind, placebo-controlled trial in China gave 132 people with neurasthenia (a condition marked by fatigue and low well-being) 1,800mg of a Reishi polysaccharide extract three times a day for 8 weeks. Their sense of fatigue fell by 28.3% from the start of the study, against 20.1% on placebo, and 51.6% of the Reishi group (32 of 62) were rated more than minimally improved, against 24.6% on placebo (15 of 61).

A 2025 systematic review and meta-analysis pooled 17 randomised trials of Reishi (971 participants, 200 to 11,200mg a day for 1 to 24 weeks).

How the leading UK Reishi liquid extracts compare

We compared Manapura against two other UK Reishi liquid extracts. Every figure below was checked directly against each brand's own UK product page and store data on 11th October 2026.

Cost per month is calculated at the dose each brand itself recommends, using how many days each bottle lasts at that dose. Manapura and Bristol Fungarium are 1-2ml per days. Lifecykel recommends a single 2ml serving, so one figure is shown per bottle size. Prices checked on 11th October 2026 and may be subject to change. GMP = Good Manufacturing Practice. cGMP = current Good Manufacturing Practice.

Three things stand out. First, the extraction ratio is the most useful number on any of these pages, and it's missing from one of the three brands. Manapura states the strongest (1:3) and Bristol Fungarium states 1:4, which means Manapura's liquid is more concentrated per millilitre (roughly 333mg of mushroom per ml against 250mg per ml). Lifecykel doesn't state one, so how concentrated its extract is is entirely unknown.

Second, Bristol Fungarium and Manapura are closely matched on credentials: both say they are Soil Association organic and UK-grown, and both use the fruiting body.

Third, on price, it helps to compare like for like. Per gram of mushroom, using each stated ratio, Manapura works out cheapest - at about £2.28 per gram against about £2.80 per gram for Bristol Fungarium.

Lifecykel recommends a 2ml serving and works out at £26.48 a month on its 120ml bottle (£34.95 on the 60ml), but with no stated ratio you can't tell how much mushroom you are getting for it. And it contains mycelium, not just fruiting body.

The brands reviewed, in detail

Manapura Organic Reishi

Manapura's Organic Reishi is a 50ml dual liquid extract made from the fruiting body of Reishi mushrooms, in water and organic ethanol, with a stated 1:3 extraction ratio. It is certified organic by the Soil Association through its UK supplier, is grown and extracted in the UK, and is free of fillers, binders and synthetic additives. The product is finished in cGMP and ISO 9001 certified facilities, is vegan and gluten-free, and is taken as 1-2 pipettes (1ml each) a day, under the tongue or in a drink - with an evening dose recommended to support relaxation and sleep. The product currently has 21 customer reviews, rated 5.0.

It is priced at £38.00 for 50ml, which makes it the cheapest per gram of mushroom of the brands that state their strength.

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Lifecykel Reishi Mushroom Extract

Lifecykel's extract is made in its own labs in Australia and the USA using what it calls a double extraction process (water and ethanol). It also contains flavouring. Its page does not state an extraction ratio. The ingredients list the fruit body, while the brand's FAQ says its extracts use both fruiting bodies and mycelium. The recommended serving is 2ml a day, so the 60ml bottle (£34.95) is 30 servings. There is no organic claim on its product page.

Bristol Fungarium Organic Reishi Tincture

Bristol Fungarium farms and formulates its own Reishi in Somerset, from a strain it cloned. It states a 1:4 ratio (1g of mushrooms to 4ml), triple extraction with alcohol and hot water, and Soil Association organic certification. A 50ml bottle is £35.00, the recommended dose is 1-2ml a day, and a bottle is up to a 50-day supply. The product has a 4.9 rating.

It is slightly more expensive than Manapura per gram of mushroom.

What is Reishi mushroom, and what are its benefits?

Reishi (Ganoderma lucidum), known in China as Lingzhi and often called the "mushroom of immortality", is a glossy, woody mushroom used in East Asian medicine for centuries and now one of the most widely studied functional mushrooms. It contains compounds that have attracted research interest, including polysaccharides such as beta-glucans and triterpenoids, which have been studied for their effects on sleep, stress, fatigue and immune function.

In people, research has looked at fatigue, well-being and sleep, as set out above. Our guide to Reishi and sleep goes through that research in more depth.

Reishi mushroom benefits: what the research covers

Here is where the research on Reishi mushroom benefits stands, area by area:

• Sleep: Reishi has been used for centuries to support rest and relaxation. Studies in mammals found longer sleep, and human sleep research has backed this up.
  
  
• Stress and mood: In a 2024 double-blind, placebo-controlled trial in 78 female college students, 1,000mg of Reishi a day for 30 days improved scores for anxiety, depression, vitality and positive well-being.
  
  
• Fatigue and energy: In a 2005 double-blind, placebo-controlled trial, a Reishi polysaccharide extract reduced fatigue over 8 weeks in people with neurasthenia.
  
  
• Immune function: Reishi is traditionally used for immune support, and its polysaccharides, including beta-glucans, are widely studied.
  

Reishi and seasonal affective disorder (SAD): what the research says

Seasonal affective disorder (SAD) is a type of depression that follows a seasonal pattern, with symptoms that usually appear in winter and ease in summer. The NHS says it is thought to be linked to reduced daylight and to changes in brain chemicals and sleeping patterns, and lists antidepressants, talking therapies and light therapy as treatments. Going outside every day, exercising and keeping a good sleep routine are also recommended.

It is important to clearly state that Reishi has not been clinically proven to treat SAD or any other condition. What the research does cover is closely related to what many people struggle with in the winter months: sleep, stress, low energy and mood. In a 2024 double-blind, placebo-controlled trial in India, 78 female college students took 500mg or 1,000mg of Reishi a day for 30 days, and the 1,000mg group improved their scores for anxiety, depression, vitality and positive well-being. In the 2005 trial described above, a Reishi polysaccharide extract reduced fatigue in people with neurasthenia over 8 weeks, and animal research has linked Reishi extracts to longer sleep.

That is why many people add Reishi to an autumn and winter evening routine, alongside the basics the NHS recommends: daylight, movement and a regular sleep pattern. If your low mood is persistent, or you think you may have SAD, see a GP.

What does extraction ratio mean on a Reishi tincture?

The extraction ratio compares the amount of mushroom used to the amount of liquid it ends up in. A 1:3 ratio means 1g of mushroom for every 3ml of liquid. A 1:4 ratio means 1g in 4ml, and 1:10 means 1g in 10ml, so the smaller the second number, the more mushroom per millilitre. A 50ml bottle at 1:3 corresponds to around 16.7g of mushroom, and at 1:4 to 12.5g, if the ratio is by dry weight.

Ratio is not the whole story. It doesn't say which part of the mushroom was used, or how it was extracted, for example. But it is the one number that lets you compare strength, and a brand that doesn't state it is asking you to take the concentration on trust.

Reishi tincture or powder: why extraction matters

Most Reishi on the market comes as a powder or capsule. Two things are worth knowing before you choose between that and a liquid extract.

Starch and mycelium on grain. The first is what the powder is made from. Some powders are made from the fruiting body. Others are made from mycelium grown on grain, and when the mycelium is not separated from the grain it grew on, leftover grain starch can make up a large share of the powder instead of mushroom. That is why a brand that says "fruiting body only" is telling you something useful. Manapura's Organic Reishi is made from fruiting body only.

Cell walls and absorption. The second is how much of the mushroom your body can absorb. Mushroom cell walls are made largely of chitin, which people digest poorly, and Reishi is especially tough and woody. The usual explanation for extracting with water and alcohol is that it breaks into those cell walls so compounds such as beta-glucans and triterpenes can be released and concentrated. That is the rationale for a dual extract, and is a reasonable mechanism.

Origin is the third difference you can check. Manapura's mushrooms are grown on a UK farm and the extract is made in the UK, so where the mushroom came from and how it was processed is known. Many mushroom supplements, powders included, don't state where their mushrooms were grown.

How much Reishi should you take?

The three brands recommend 1-2ml a day (Bristol Fungarium), 2ml a day (Lifecykel) or 1-2 pipettes of 1ml each (Manapura). Manapura recommends taking Reishi in the evening to support relaxation and sleep, though it can be taken at any time of day.

Reishi tinctures can contain alcohol, are intended for healthy adults and are not recommended in pregnancy or breastfeeding. Speak to a healthcare professional first if you are taking medication or managing a health condition.

The bottom line

Reishi is one of the most widely studied functional mushrooms. Transparency is very important in an industry that is new and under-regulated: does the brand say how much mushroom is in the bottle, which part of the mushroom it uses, and how it is grown?

On those measures, Manapura states the most concentrated ratio of the three brands (1:3), which also makes it the better value per gram of mushroom of the two brands that state a ratio, and states dual extraction, fruiting body only and UK-grown organic ingredients. Bristol Fungarium states 1:4, organic and UK-farmed credentials. Lifecykel is the best known, but does not state a ratio, so its concentration cannot be compared with the other two, and we found no organic claim on its page.

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FAQs

What is the best Reishi supplement in the UK?

On stated concentration and price per gram, Manapura's 1:3 is the most concentrated of the three liquid extracts compared here, against 1:4 for Bristol Fungarium and no stated ratio for Lifecykel.

What are the benefits of Reishi mushroom?

Reishi (Ganoderma lucidum) is traditionally used to support relaxation, sleep and general well-being. Research includes a placebo-controlled trial in which a Reishi polysaccharide extract reduced fatigue in people with neurasthenia over 8 weeks, a 2024 trial in which 1,000mg a day for 30 days improved anxiety, depression, vitality and well-being scores in students, and animal studies showing longer sleep.

 Can Reishi help with seasonal affective disorder (SAD)?

There is no clinical trial of Reishi for SAD, so it cannot responsibly be described as a treatment. SAD is a type of depression that follows a seasonal pattern, and the NHS lists light therapy, talking therapies and antidepressants as treatments. Reishi has been studied for sleep, stress, fatigue and well-being, and many people include it in an autumn and winter evening routine. If you think you may have SAD, see a GP.

What does a 1:3 extraction ratio mean?

It means 1g of mushroom was used for every 3ml of liquid. It is more concentrated than 1:4 or 1:10, which use more liquid for the same amount of mushroom.

What is dual extraction?

Dual extraction uses both water and alcohol. The generally stated rationale is that water captures water-soluble compounds such as beta-glucans and alcohol captures alcohol-soluble compounds such as triterpenes.

How much does a Reishi tincture cost in the UK?

The standard bottles compared here cost £34.95 (Lifecykel 60ml), £35.00 (Bristol Fungarium 50ml) and £38.00 (Manapura 50ml). It is important to consider how much mushroom / active components are present in a tincture, and this can be indicated by the extraction ratio.

Is a Reishi tincture better than capsules?

Tinctures are easy to dose and take, and the extraction ratio lets you compare strength between brands. Capsules often contain whole mushroom powder, are often imported, and some powders are made from mycelium grown on grain and can contain a lot of starch.

When should I take Reishi, and how long does it take to work?

Manapura recommends taking Reishi in the evening to support relaxation and sleep, though it can be taken at any time of day. Research has looked at changes after several weeks of daily use, such as the 8-week trial described above, so consistency matters.

Is Reishi safe?

Reishi mushroom is widely available as a food supplement in the UK. Tinctures can contain alcohol and are intended for healthy adults. Speak to a healthcare professional before starting if you take medication, have a health condition, or are pregnant or breastfeeding.

Where can I buy an organic Reishi tincture in the UK?

Manapura’s Organic Reishi is available at manapura.co as a 50ml dual liquid extract with a stated 1:3 ratio, made from the fruiting body.

References

Jafari A, Mardani H, Mirzaei Fashtali Z, Arghavan B.
The Nutritional Significance of Ganoderma lucidum on Human Health: A GRADE-Assessed Systematic Review and Meta-Analysis of Clinical Trials.
Food Science & Nutrition. 2025;13(6):e70423.
https://pubmed.ncbi.nlm.nih.gov/40510787/

Tang W, Gao Y, Chen G, et al.
A randomized, double-blind and placebo-controlled study of a Ganoderma lucidum polysaccharide extract in neurasthenia.
Journal of Medicinal Food. 2005;8(1):53-58.
https://pubmed.ncbi.nlm.nih.gov/15857210/

Cui XY, Cui SY, Zhang J, et al.
Extract of Ganoderma lucidum prolongs sleep time in rats.
Journal of Ethnopharmacology. 2012;139(3):796-800.
https://pubmed.ncbi.nlm.nih.gov/22207209/

Yao C, Wang Z, Jiang H, et al.
Ganoderma lucidum promotes sleep through a gut microbiota-dependent and serotonin-involved pathway in mice.
Scientific Reports. 2021;11(1):13660.
https://pubmed.ncbi.nlm.nih.gov/34211003/

Ren S, Liu H, Sang Q, Lu M, Gao Q, Chen W.
A Review of Bioactive Components and Pharmacological Effects of Ganoderma lucidum.
Food Science & Nutrition. 2025;13(7):e70623.
https://pubmed.ncbi.nlm.nih.gov/40661810/

Mitra S, Mitra M, Nandi DK, Saha M, Bandyopadhyay A.
Efficacy of Lingzhi or Reishi Medicinal Mushroom Ganoderma lucidum (Agaricomycetes) Supplementation on Psychological Stress and Selective Fitness Profile Parameters in Female College Students in West Bengal, India.
International Journal of Medicinal Mushrooms. 2024;26(11):51-64.
https://pubmed.ncbi.nlm.nih.gov/39241163/

NHS. 
Seasonal affective disorder (SAD).
https://www.nhs.uk/mental-health/conditions/seasonal-affective-disorder-sad/

Medicines and Healthcare products Regulatory Agency.
Good manufacturing practice and good distribution practice. GOV.UK.
https://www.gov.uk/guidance/good-manufacturing-practice-and-good-distribution-practice

International Organization for Standardization.
ISO 9001 - Quality management systems.
https://www.iso.org/iso-9001-quality-management.html

Disclaimer

This article is for general information and educational purposes only and is not medical advice. Manapura products are food supplements, not medicines, and should not be used to diagnose, treat, cure, or prevent any disease. Consult a healthcare professional before starting any new supplement.