THE SCIENCE
The science behind functional mushrooms
Most functional mushroom supplements in the UK are underdosed, made from the wrong part of the mushroom, or extracted in a way that throws away half the active compounds. This page explains what the research actually shows, what it does not, and why dual extraction and dosing matter. We will be honest about the difference between strong evidence, preliminary evidence, and laboratory work that has not been tested in people.
What are functional mushrooms
Functional mushrooms are edible fungi studied for bioactive compounds that go beyond basic nutrition. They are foods, not medicines. The term covers a handful of well researched species, and Ffyngau works with two of them: lion’s mane (Hericium erinaceus) and reishi (Ganoderma lucidum). We blend and prepare them in Wrexham, North Wales.
When people search for functional mushroom supplements UK, they are usually met with vague promises and very little detail about what is in the jar. We take the opposite approach. Each species has a different bioactive profile, a different research base, and a different reason for being in our range. You can read the specifics on the lion’s mane and reishi product pages.
- Lion’s mane (Hericium erinaceus): most human research looks at cognition and mood.
- Reishi (Ganoderma lucidum): most human research looks at immune markers and general wellbeing.
None of this is a claim that any product does anything for you.
Extraction: matching the method to the mushroom
There is no single best way to extract a mushroom. There is only the right way for the compound you are after. Anyone who tells you every mushroom must be dual extracted is selling you a rule, not a reason.
Here is the reason.
Mushrooms carry two broad groups of useful compounds. The beta-glucans, which are water-soluble, and a range of others, including some triterpenes, that are alcohol-soluble. A hot water extract pulls the first group. An alcohol extract pulls the second. Dual extraction runs both processes and combines them, which is why it is the right choice when a mushroom’s value is split across both groups.
Lion’s mane is the clear case for dual. Its hericenones, the compounds many people are reaching for, are alcohol-soluble. Water alone leaves them behind. So our Lion’s Mane drops are a dual extract, hot water and alcohol. It is the honest way to make that product, even though it means the bottle carries alcohol.
Reishi is different. The beta-glucans that reishi is known for come out in hot water. That opens up a choice alcohol-soluble mushrooms do not give you: you can make a genuinely useful reishi extract without any alcohol at all. So we do. Our Grym Drops Reishi is a glycerin extract, alcohol-free, which means it suits people avoiding alcohol, and it goes into a child’s household without a second thought. We lose some of the alcohol-soluble triterpene fraction by doing it this way. We think that is the right trade for this particular product, and we would rather tell you the trade than pretend it does not exist.
That is the whole philosophy. Reishi without alcohol because it can be. Lion’s mane with alcohol because it has to be. Method chosen per mushroom, per compound, and explained either way.
Bioactive compounds: beta-glucans and triterpenes
These are the two compound groups that most of the research focuses on. Here is what current studies associate them with, described in neutral terms.
Beta-glucans
Beta-glucans are branched polysaccharides found in the cell walls of fungi. In laboratory and animal research they are the compounds most often associated with effects on immune cell activity. Some human trials have measured changes in immune markers after supplementation, though the broader picture in people is still developing. Beta-glucan content is also the single most useful number for judging extract quality, which is why a credible product states it and a vague one does not.
Triterpenes
Triterpenes are a large family of compounds particularly abundant in reishi, where the ganoderic acids have been studied in vitro for antioxidant and other activities. Most of this work is laboratory based. Triterpene findings in humans remain limited, and we will not overstate them. Their relevance to a supplement is mainly that they are a distinct, alcohol-soluble fraction that a water-only extract fails to capture, which loops back to why we dual extract.
Dosing: why most products are underdosed
This is the part the industry would rather you did not look at closely. Two common problems make a large share of functional mushroom supplements UK shoppers buy effectively too weak to reflect the doses used in research.
Fruiting body versus mycelium on grain
The fruiting body is the actual mushroom and the part used in most of the human research. A cheaper alternative is mycelium grown on a grain substrate, which is then milled, grain and all, into a powder. The result is heavily diluted with leftover grain starch, and independent testing has repeatedly found such products to be low in beta-glucans and high in starch. If a label does not clearly say fruiting body, assume the worst. Ffyngau uses fruiting body extract only.
That is the standard we build to: concentrated fruiting body extract, not a token sprinkle. Grym Drops Reishi is our first product. Welsh brand.
The evidence base, ingredient by ingredient
Below is a fair summary of the human research on each species. We have cited real, peer-reviewed studies and have been deliberate about flagging small sample sizes, preliminary findings, and work that has only been done in cells or animals. None of this is a claim that any product does anything for you.
Lion’s mane (Hericium erinaceus)
The most cited human study is Mori et al. (2009, Phytotherapy Research), a double-blind, placebo-controlled trial in 30 older Japanese adults with mild cognitive impairment. Over 16 weeks the group taking lion’s mane powder showed significantly higher cognitive scores than placebo, but the scores declined after supplementation stopped, and the sample was small. Separately, Nagano et al. (2010, Biomedical Research) reported reductions in self-rated depression and anxiety measures in 30 women over 4 weeks. Both are small, short trials. Much of the supporting work on nerve growth factor is from cell and animal studies, not humans, so the human evidence should be read as promising but preliminary. Details are on the lion’s mane page.
Reishi (Ganoderma lucidum)
Reishi has one of the larger human literatures, and it is a useful lesson in honesty. Klupp et al. (2016, Scientific Reports) ran a double-blind, placebo-controlled trial of 3 grams per day of reishi extract in 84 people and found no significant effect on the cardiovascular and metabolic markers measured. We include null results like this on purpose. The honest reading is that reishi is well studied and well tolerated, but human outcomes are mixed and far from settled. More on the reishi page.
The honest bottom line: lion’s mane has the most encouraging small human cognition trials, and reishi has the broadest but most mixed human literature. We would rather tell you that than imply certainty that does not exist.
How Ffyngau puts this into practice
Everything above sets the standard we hold ourselves to. We source our mushrooms from The Fungi Folks in Chepstow, Wales, use fruiting bodies rather than grain-grown mycelium, and extract them properly so the compounds that matter make it into the bottle. You can see how this comes together in Grym Drops Reishi, our first product. Welsh brand.
Ffyngau products are food supplements. They are not intended to diagnose, treat, cure or prevent any disease. If you are pregnant, breastfeeding or taking medication, consult a healthcare professional before use.