5groups of compounds in one extract: melanin, polyphenols, betulin, triterpenes, beta-glucans.
0fillers, and no additives. Just the extract, in a plant-based shell.
Inonotus obliquus · DER 10:1 extract · grown on birch
How to use it
Two capsules. Done.
A morning habit that simply makes sense.
01
Take 2 capsules
One gram of extract is the daily serving.
02
Drink some water
Nothing to prepare and nothing to measure.
03
Repeat daily
Regularity matters more than the perfect hour.
When
In the morning or during the day, ideally after a meal.
Taste
None. The capsules have no taste.
Do not exceed the recommended daily serving.
With water
Swallow, with water. Nothing to mix.
Nothing to measure
A precise serving: 500 mg of extract in each capsule.
Out the door
The jar goes wherever you go.
MelaninPolyphenolsBetulin, betulinic acid
What is inside
Black outside. Gold inside.
They call chaga (Inonotus obliquus) the mushroom multivitamin for how much one mushroom holds. Its black crust is rich in melanin; inside are polyphenols, the antioxidant compounds it is known for, with triterpenes and polysaccharides, beta-glucans among them. And because it grows on birch, it carries betulin and betulinic acid from the tree.
The compounds inside
Structure, simplifiedPigment · the black crust
Melanin
The dark pigment that gives chaga its black, cracked outer layer.
In this extractNaturally present in chaga.
On recordIn fungi, melanin is known as a shield against sunlight and cold.
Structure, simplifiedAntioxidant compounds · the inside
Polyphenols
A group of compounds found in the rust-brown interior of chaga. They are the antioxidant compounds it is known for.
In this extractNaturally present in chaga.
Structure, simplifiedTriterpene · from the birch
Betulin
A compound of birch bark, and the reason the bark is white. Chaga takes it up from the tree it grows on.
In this extractIt does not dissolve in water. That is why the extract is made twice: hot water, then ethanol.
On recordFirst isolated from birch bark in 1788, by Johann Tobias Lowitz.
Structure, simplifiedTriterpene · from the birch
Betulinic acid
A close relative of betulin, and like it a compound that comes from the birch.
In this extractCarried into the extract by the same ethanol step.
Structure, simplifiedTriterpenes · dissolve in alcohol
Triterpenes
A group of natural compounds that make up the chemical profile of chaga.
In this extractNaturally present in chaga.
On recordInotodiol, chaga’s own triterpene, was described in 1958 by Ludwiczak and Wrzeciono, in Poland.
Structure, simplifiedPolysaccharides · dissolve in water
Beta-glucans
Sugars naturally present in mushrooms, in their cell walls among other places.
In this extractMeasured in the 10:1 extract: 9.9% (ALS, accredited laboratory).
On recordThe standard yardstick for a mushroom extract: the higher the confirmed level, the more concentrated the extract.
Beta-glucans are the compound measured in the 10:1 extract. The others are naturally present in chaga. Inonotus obliquus appears in 451 papers indexed on PubMed (October 2026). The drawings are simplified.
Use it regularly
The 12‑week cycle.
We recommend a cycle of three to four months of regular use, followed by a month’s break.
Daily serving
Two capsules, 500 mg of extract in each. Swallow, with water.
2 capsules1,000 mg of extract
When
In the morning or during the day, ideally after a meal. Regularity matters more than the perfect hour.
Morningor during the day
One jar
Sixty capsules: a month in every jar.
30 days60 capsules
Do not exceed the recommended daily serving. Food supplement: not a substitute for a varied diet.
The maths
£0.80 a day.
One jar of 60 capsules is a 30-day supply at two a day. That is the subscription price, with 20% off every jar and free UK delivery. Pause, skip or cancel anytime.
Written by customers of our EU store, solvelabs.eu, about the same company and the same products, and translated here from Polish. They are the opinions of individual buyers. Figures as shown on Trustpilot, October 2026.
“It is the only Polish brand on the mushroom supplement market that deserves trust. I have been buying month after month, I know all their products and have tried them all. Everything is as described…”
“Of course the product is great. But here I value the service. From the quick handling of the order, through the very nice packaging, to the after-sales service, which matters most. You can ask, you can talk. Thank you, and I recommend it!”
“I received top-shelf goods, and Solve Labs always rises to the occasion in every respect: price, quality, delivery and expert advice. On top of that, great contact and quick answers to questions about the products. I warmly recommend them!”
“Fast shipping. The products are packed perfectly, so they do not arrive battered, which often happens with supplements. With Solve Labs there are no such problems. Fairly priced. A wide choice of payment and delivery options. I will certainly be back.”
“Very precise and clear product descriptions, a very quick and smooth transaction and lightning delivery. I will describe the products after a month of taking them. I recommend the company.”
“A very efficient shipping system. The supplements are top quality, as always.”
“I warmly recommend them: the products really are reliable when it comes to quality.”
“Good communication and service. Very quick and efficient in solving a problem.”
“Great customer service, quick delivery, and the best quality supplements like always.”
Ratings & reviews
What buyers actually say.
Every review below is from a real order on solvelabs.world, shown in the customer’s own words.
5.0
★★★★★★★★★★
Average of 4 verified reviews for Solve Labs Chaga on solvelabs.world.
Breakdown · 4 reviews
5★100%
4★0%
3★0%
2★0%
1★0%
★★★★★The one from home
“I am happy to see my favourite mushroom brand in the UK. Since I moved from Europe, where the brand is one of the top, my sister used to send it over. These are really effective extracts guys :)”
VerifiedKornel· solvelabs.world · 2024
★★★★★The best extract I’ve tried
“I have tried many brands and these are definitely the best extract powder there is. I can definitely feel the difference. Highly recommend if you are looking for good quality extracts. And if you have any questions the seller is very helpful.”
VerifiedAleksandra· solvelabs.world · 2024
★★★★★Lasts longer than it looks
“Even though it seems expensive, the scoop you use is small so it actually lasts quite well.”
VerifiedJohn· solvelabs.world · 2024
★★★★★Easy
“Easy to use product and seems effective!!!”
VerifiedFabienne· solvelabs.world · 2024
★★★★★Two words
“Great product!”
VerifiedAnetta· solvelabs.world · 2024
Reviews are verified purchases collected on solvelabs.world through our review platform, shown in the customer’s own words and lightly edited for length. They reflect individual experiences and are not claims made by Solve Labs. Food supplement — not a substitute for a varied diet or medical advice.
The set · save 15%
The Long Game
Nothing here works in a week. That is rather the point. The collagen is the only one of the three allowed to claim anything.
£30.00
15% comes off in the basket on three items or more, as a one-time purchase.
4.8 on Trustpilot · 253 reviews
Every batch lab-tested
Heavy metals: tested
Microbiology: tested
Every amount on the label
No proprietary blends
Made in the EU · HACCP
Batch certificate on request
60 days to decide
4.8 on Trustpilot · 253 reviews
Every batch lab-tested
Heavy metals: tested
Microbiology: tested
Every amount on the label
No proprietary blends
Made in the EU · HACCP
Batch certificate on request
60 days to decide
FAQ
Questions, answered.
The daily cup for the cold half of the year, and the afternoon coffee swap. People take it for the ritual — dark, smooth, caffeine-free — and for what is in it: the densest natural package of melanin, betulin, polyphenols and beta-glucans in the range, from a mushroom Siberia has drunk through its winters for centuries.
Coffee-lovers who run on it after two and want a way off. Winter people who want one daily to lean on from October to March. Anyone who’d rather stay ahead than catch up, and wants the strongest natural daily rather than the sweetest.
Inonotus obliquus is a sclerotium, not a cap-and-stem mushroom: a dense black mass that grows for years on living birch, golden inside. Ours is wild-harvested from birch, dual extracted in water and ethanol, concentrated 10:1 to 1,000 mg per serving, assayed at 9.9% beta-D-glucans and DNA-verified to the species.
Two capsules with lunch, or two 500 mg scoops of the powder (1 g) in hot water as the afternoon cup. Drops: 2 ml under the tongue. Follow the dosage on your jar and don’t exceed the stated daily dose.
Dark, smooth and faintly vanilla — closer to a mild coffee than to a mushroom. Most people drink it straight in hot water; some add a splash of milk. The capsules are tasteless.
None. That is the point of the afternoon cup: you get the ritual and the dark, roasted taste without anything that keeps you up.
Because chaga is not a mushroom you can farm in a tray. It forms slowly on living birch, so the only real chaga is cut from the tree. “Chaga” grown on grain is mycelium harvested with its substrate — and it is milled with the grain.
Because ours was measured. Chaga naturally carries far fewer beta-glucans than reishi or lion’s mane; a chaga figure of 30% or more is almost always a “polysaccharide” number, which counts starch. Our 9.9% is an accredited assay by ALS, published in full — open it here.
Three things, by three independent laboratories: beta-D-glucan content (ALS, accredited), species identity by DNA barcoding (InventUR, University of Rzeszów — 99.3% Inonotus obliquus) and a full safety panel on the lot — heavy metals, microbiology, PAHs, ethylene oxide and irradiation (GBA Polska, PCA-accredited). All three signed reports are published in full.
Same extract, three ways. Powder if you want the cup — it is the format most chaga customers choose. Capsules if you want no taste and no measuring. Drops if you want it under the tongue in seconds. The daily serving is the same.
A fresh jar every 30 days at 20% off, with free UK delivery. Pause, skip a delivery or cancel any time from your account — no minimum term, no questions.
Try it at home for up to 60 days. If it isn’t for you, send it back — even opened — and we’ll refund the jar.
If you’re pregnant or breastfeeding, taking prescription medication, have a history of kidney stones, or have a mushroom allergy, talk to your doctor before starting any supplement. Food supplement — keep out of reach of young children.
Orders dispatch within 1–2 working days. UK delivery is free on orders over £50 — and always free on subscription.
Rather stir it in? The same mushroom comes as a powder and as drops.
Independently tested by ALS, InventUR & GBA Polska · results relate to the tested sample.
Lot GS241201
Beta-D-glucans are the category’s yardstick for how much real mushroom an extract carries. Chaga naturally carries far fewer than reishi or lion’s mane, which is why a measured chaga figure looks modest next to an unmeasured “polysaccharide” claim. These figures relate to the tested sample.
Beta-D-glucans, tested sample9.9%
Dry-matter basis10.5%
Tested sampleChaga powder · 100 g
MethodMegazyme mushroom & yeast
Extract per serving1,000 mg, 10:1
ALS Food & Pharmaceutical Polska · accredited No. 1163
Signed: Magdalena Woda · ALS Food & Pharmaceutical (accredited, No. 1163) · Dec 2022
A chemical assay tells you how much; it cannot tell you what. Species identity is confirmed by sequencing the ITS region — the universal barcode marker for fungi — against the public NCBI database.
Named speciesInonotus obliquus
Identity match99.3%
Marker sequencedITS barcode
Reference databaseNCBI
MethodPCR + Sanger sequencing
InventUR Sp. z o.o. · spin-off of the University of Rzeszów
Signed: Bartosz Jadam, CEO · InventUR (University of Rzeszów) · 22 Jul 2024
Heavy metals are screened against the EU maximum levels for food (Reg. 2023/915). In the tested lot, each element sat well within its permitted limit. Values in mg/kg.
Lead (limit ≤3.0)0.036
Mercury (limit ≤0.1)<0.0010
Cadmium0.0037
Arsenic0.031
GBA Polska · PCA-accredited No. AB 1095 (ILAC-MRA)
Qualified electronic signature · GBA Polska (PCA-accredited, No. AB 1095) · Mar 2025
273 Chaga listings — 196 US, 75 UK, 1 ES — across
178 distinct brands, retrieved and read 15–16 August 2026.
What we found
273products audited
178 distinct brands
26%verified pure — nothing but mushroom and a capsule shell
70 of 273
73%list a non-mushroom ingredient
194 of 264 readable labels
2.2%publish an openable lab proving 30%+ beta-glucans
4 of 178 brands
1product publishes an openable DNA species report
Solve Labs
One product holds all three.
Of 273, Solve Labs is the only one publishing an openable DNA species report
alongside a beta-glucan assay and a batch safety certificate.
How we did it
Where a marketplace listing hid the ingredient statement, we recovered
it from the brand’s own website — bringing 264 of 273
listings to a readable standard.
Every lab document was opened and read. Photos, badges,
spec sheets and marketing graphics did not count; broken links were graded down.
A figure was recorded only where the number sat directly against the
term it describes.
A clean ingredient statement is the seller’s own claim, recorded
as published — not independently verified here. Listings and lab documents change;
these findings describe them as of 15–16 August 2026. Prepared from a master
database of 273 listings, one row per product. Not medical advice; no statement evaluated
by the FDA or MHRA.
The 60-day guarantee
Give it time — 60 days, on us.
Chaga is a routine people judge over months, not mornings. So your first order carries a 60-day guarantee — long enough to actually find out.
Run the routine. One serving a day, any format — for up to 60 days from delivery.
Not for you? Email support with your order number. No forms, no interrogation.
Full refund — even opened. We’ll ask what didn’t work, because it helps us. The refund doesn’t depend on your answer.
Applies to your first order. Your statutory rights are unaffected.
Orders leave one of two warehouses — the United Kingdom or Poland —
whichever is closer to you.
DestinationShips fromTime
United KingdomUK1–2 working days
EuropePoland3–5 working days
Rest of worldUK or Poland5–10 working days
UK delivery is free on subscription, and on one-time orders
over £50.
Times run from dispatch and exclude weekends and public holidays.
They are estimates, not guarantees. Duties or import charges outside the UK and EU
are the recipient’s responsibility.