Tiger Milk Mushroom: A Botanical Guide
The part people buy is not the mushroom. It is the sclerotium — a hard lump of fungal tissue that sits underground, with a small cap poking up above it. Wild ones grow singly and are hard to find, which is why almost everything on sale now is cultivated. This guide covers the botany, what is in our capsules, how to take them, and at length what is and is not known about safety. No health claims: none are permitted, and the published human data is thin.
- Latin name
- Lignosus rhinocerotis
- Part used
- Sclerotium — underground, not the cap
- Origin
- Tropical Southeast Asia, principally Malaysia
- Per daily serving
- 900 mg of 10:1 extract, 2 capsules
- Format
- Capsules only, 60 per bottle
- Allergen
- Fungal material — see the safety section
01 What Tiger Milk Mushroom is
A polypore fungus of the tropical Southeast Asian forest floor. Malaysia is the heartland; it is also recorded in Indonesia, Thailand, the Philippines and parts of southern China. In Malaysia it goes by cendawan susu rimau.
The sclerotium is the compact underground mass of tissue from which the small stalked cap emerges. That underground portion is what has been collected, and what extracts are made from. The cap and stalk are not used.
The name is folk etymology rather than botany — the story goes that the mushroom springs up where a tigress's milk has fallen. There is no tiger involved.
- Common name
- Tiger Milk Mushroom
- Latin binomial
- Lignosus rhinocerotis (Cooke) Ryvarden — also written Lignosus rhinocerus in supplement labelling and in much of the published literature
- Family
- Polyporaceae
- Part used
- Sclerotium (the underground tuber-like mass), not the cap or stalk
- Native range
- Tropical Southeast Asia, principally Malaysia
- Form on our shelf
- Capsules only
Wild-collected versus cultivated. Wild sclerotia are genuinely scarce. They grow singly, they are hard to spot, and historically they were picked up opportunistically from the forest floor — most of the reason the species acquired its reputation for rarity. That scarcity is precisely why cultivation was developed. Commercially available Tiger Milk Mushroom material today is grown rather than foraged, which makes supply, identity and consistency far easier to control than wild collection ever allowed. Our extract is certified organic.
02 What's in our product
The formula is deliberately short. Certified organic Tiger Milk Mushroom extract, and a vegan capsule shell. Nothing else — no bulking agents, no flow agents, no fillers, no sweeteners, no flavourings.
- Botanical
- Certified organic Lignosus rhinocerus extract
- Amount per serving
- 900 mg per daily serving of 2 capsules (450 mg per capsule)
- Extract ratio
- 10:1
- Raw equivalent
- 900 mg of 10:1 extract is equivalent to 9,000 mg (9 g) of mushroom
- Standardisation
- ≥10% polysaccharide
- Capsule shell
- Vegan, plant-based
- Other ingredients
- None
- Free from
- Artificial additives, sweeteners, gluten, soy, dairy; non-GMO
- Allergen note
- Contains mushroom (fungal) material — see the safety section
- Suitable for
- Vegans and vegetarians
- Bottle size
- 60 capsules
- Bottle duration
- 30 days at 2 capsules a day — a one-month supply
- Manufacture
- Made in a facility adhering to Good Manufacturing Practices (GMP)
Ten kilograms of dried mushroom in, one kilogram of extract powder out. Two capsules therefore carry the raw-material equivalent of 9 grams.
The arithmetic behind "10:1". An extract ratio describes how much starting material went into a given weight of finished extract. A 10:1 extract means 10 kilograms of dried mushroom material were processed down to 1 kilogram of extract powder — a ten-fold concentration by weight. So: 900 mg of extract × 10 = 9,000 mg, or 9 grams, of mushroom in raw-material terms. That is the figure on the label.
A ratio is a description of the manufacturing process, not a measure of potency. It tells you the concentration step, not what ended up in the powder. Nor are ratios comparable across brands unless the starting material and extraction method match, which they rarely do. This is why the standardisation figure carries more weight: ≥10% polysaccharide is a stated floor for a measurable constituent, and a floor is a firmer number than a ratio.
03 How to take it
The label directions are simple.
- Daily amount
- 2 capsules
- With food?
- Preferably with a meal, and with water
- Timing
- No particular time of day is specified. Pick a meal you eat reliably and keep to it
- Maximum
- Do not exceed the recommended daily amount
- Format note
- Swallow the capsules whole with water
- Storage
- Keep the lid closed. Store in a cool, dry place, out of direct sunlight. Keep out of reach of young children
- Also
- Not a substitute for a varied and balanced diet or a healthy lifestyle
Take both capsules together, or split them across two meals. The daily total is what the label specifies. There is no liquid drop format for this botanical in our range, so no dropper technique to learn.
Miss a day and you simply take the next day's serving as normal. Doubling up achieves nothing and would exceed the recommended amount.
04 Taste and format
Capsules only. So the practical answer to "what does it taste like" is that largely you don't taste it — the shell is swallowed whole and the extract stays inside it.
Open one and you will smell it. The extract is a fine, pale-to-mid brown powder with a faint earthy, woody smell typical of dried fungal material. Not strong, not unpleasant. We would still not recommend opening capsules and stirring the contents into food or drink: the powder is not formulated for that, and it makes the daily amount harder to measure accurately.
The practical advantage of capsules over loose powder is that the serving is fixed, there is nothing to weigh, and there is no taste to work around. The trade-off is that you cannot go below one capsule.
05 Safety, cautions and interactions
Start with the honest position: the safety data for Tiger Milk Mushroom is limited. This is not a hedge, it is the state of the evidence. We checked the regulator and formulary sources you would expect to check:
- There is no EMA herbal monograph for Lignosus rhinocerotis. The European Medicines Agency's Committee on Herbal Medicinal Products (HMPC) publishes EU herbal monographs setting out assessed safe use for herbal substances; Tiger Milk Mushroom is not among them, so there is no regulator-assessed dosage, duration or contraindication list to point you to.
- It does not appear in the BNF or in NICE guidance, because it is not a licensed medicine in the UK.
- The MHRA has not granted it a Traditional Herbal Registration (THR). It is sold as a food supplement, not as a medicine.
- EFSA has not authorised any health claim for it. Under retained Regulation (EC) No 1924/2006 we cannot tell you it does anything, and we won't.
What evidence exists. Most published safety work on Tiger Milk Mushroom is animal toxicology — sub-acute, sub-chronic and reproductive toxicity studies in rats, which did not report adverse effects at the doses tested. Animal toxicology tells you about acute and short-term tolerance in rodents. It does not tell you about long-term human use, about use alongside prescribed medicines, or about use in pregnancy. Published human studies are few and small. Treat any confident safety statement about this mushroom — including ours — with appropriate scepticism.
Who should not take it
- Anyone with a known mushroom or fungal allergy or sensitivity. This is an extract of fungal material. If you react to mushrooms, edible fungi, mould or fungal-derived ingredients, do not take it. Allergic reactions to fungal proteins are well recognised and this is the clearest reason to avoid the product outright.
- Anyone who is pregnant or breastfeeding. There is no adequate human safety data for use in pregnancy or lactation. In the absence of that data, the standard and correct precaution is to avoid it. Do not start it while trying to conceive without speaking to your midwife or doctor.
- Children and under-18s. This product is intended for adults. There is no established use or safety data in children.
- Anyone who has previously reacted to it. Stop and do not restart.
Medicines and interactions
We found no published human interaction studies for Tiger Milk Mushroom. That is not the same as "no interactions" — it means interactions have not been looked for, so they cannot be ruled out. Given that, the sensible position is:
- If you take any prescribed medicine, speak to your pharmacist or doctor before starting. Take the bottle or a photograph of the label with you so they can see the botanical, the amount and the extract ratio.
- Be particularly deliberate about checking if you take anticoagulant or antiplatelet medicines, immunosuppressant medicines, medicines for diabetes, or medicines with a narrow therapeutic range where small changes matter (for example lithium, or anti-epileptic medicines). Not because effects are documented — they are not — but because these are the categories where an unknown interaction would matter most.
- If you have an autoimmune condition, have had an organ transplant, or are under the care of a specialist for any ongoing condition, ask that specialist before adding it.
- If you have liver or kidney impairment, ask your doctor first. Clearance of botanical constituents in impaired organ function has not been studied here.
Before surgery
Stop taking it at least two weeks before any planned surgery or dental procedure under anaesthetic, and tell your surgeon and anaesthetist that you have been taking it. This is the standard precaution for botanical supplements whose effects on bleeding, blood sugar and anaesthetic metabolism have not been characterised. It costs you nothing to stop; it may cost something not to.
Duration of use
There is no regulator-set duration limit, because no regulator has assessed it. There is also no long-term human safety data. A pragmatic approach: take it for a defined period, then stop and review rather than continuing indefinitely by default. If you intend to take it continuously for more than a few months, make that a conversation with your doctor or pharmacist rather than a decision you drift into.
General cautions
- Do not exceed the recommended daily amount. More is not better and the safety data does not extend above the label serving.
- Stop taking it and seek medical advice if you develop any unexpected symptom after starting — rash, swelling, breathing difficulty, digestive upset, or anything else that is new.
- Suspected adverse reactions to herbal products can be reported to the MHRA through the Yellow Card scheme. Reporting is useful precisely because the evidence base is thin.
- Keep out of the sight and reach of children.
- Do not use if the tamper seal is broken or the capsules look or smell wrong.
- Do not use beyond the best-before date.
When to speak to a pharmacist
A community pharmacist is free to talk to, does not need an appointment, and can check a supplement against your full medicines list. Speak to one before starting if you take any regular medication, are managing a long-term condition, are over 65 and on several medicines, or are simply unsure. "Is there any reason I shouldn't take this?" is a perfectly good opening question.
06 In short
A Southeast Asian polypore whose sclerotium has a long-standing place in regional herbal tradition. Ours is a certified organic 10:1 extract: 900 mg per two-capsule daily serving, standardised to ≥10% polysaccharide, in a vegan capsule with nothing else added. Sixty capsules, one month per bottle. The safety evidence is limited and we have said so plainly rather than padding it out.
Shop the product: Tiger Milk Mushroom Capsules
UK delivery: standard delivery is free on orders of £28 or more, otherwise £2.99. Express delivery is £5.99, and free on orders of £48 or more. Orders are dispatched within 1–2 business days and typically arrive within 1–4 business days, via Royal Mail or Amazon Logistics. Returns: you have 30 days from receipt to request a return. The item must be unopened, untampered and in its original packaging, with proof of purchase. Email hello@probotanics.co.uk to start a return — accepted returns are sent a return shipping label and instructions, and items sent back without requesting a return first cannot be accepted. If an item arrives damaged, defective or incorrect, contact us immediately on receipt.
This is a food supplement, not a medicine. It is not intended to diagnose, treat, cure or prevent any medical condition. Food supplements are not a substitute for a varied and balanced diet or a healthy lifestyle. If you are pregnant, breastfeeding, taking any medication or under medical care, speak to your doctor or pharmacist before use. ProBotanics Ltd, company number 13685177, 86-90 Paul Street, London, EC2A 4NE.