Please note: This review reflects information we gathered on the date it was researched and may now be out of date. Providers frequently change their pricing, plans, medications, and policies. Any ratings, reviews, and customer feedback are gathered from publicly available online sources and may have since changed or no longer be accurate. Always do your own research and confirm the latest details directly with the provider before making any decision.
Yumz Lab Review
They tell you to work up to a "Giga Dose". Their laboratory certificate measures two compounds, and neither of them is the one doing the work.
Yumz Lab
Dosing Ladder, No Dose DisclosedWe pulled the certificates. Sour Rainbow, PharmLabs San Diego SD260310-023, analysed 10 March 2026, reports exactly two analytes: Psilocybin ND and Psilocin ND. Neither is the psychoactive compound in an Amanita muscaria product — that is muscimol, and nothing on the certificate measures it. The January 2025 marshmallow certificate is identical in scope. Meanwhile the page says: "1 piece: Light Dose … 5 pieces: Giga Dose."
They have run the right test before. A 2023 California Ag Labs certificate for Yumz Amanita Gummies quantified muscimol at 10.14 mg/serving and 101.38 mg/container, with ibotenic acid not detected. The tub photographed on that same certificate is labelled "7000 MG". The batch field is blank, and the current certificates no longer run the assay.
And there is a free one in every box. The site banner reads "FREE MUSHROOM CHOCOLATE BAR ON ALL ORDERS", and the catalogue's free-gift item is the Amanita Muscaria Mushroom Chocolate Bar. Order flower, receive a psychoactive chocolate bar you did not ask for — in the format at the centre of this category's worst outbreak.
Also checked 8 August 2026: the words "muscimol" and "ibotenic" appear zero times across all 250 products in the catalogue feed; the "Download Sour Rainbow Lab COA Report" link in the product description returns a 404, though a current certificate does exist on the Lab Results page; and most of the THCA catalogue — flower, hash, live rosin, carts, and gummies up to 6000mg — is reached by H.R. 5371's 0.4mg-per-container limit in 96 days, on 12 November 2026.
Affiliate disclosure: GLP1Drugs.org earns 15% of order value — including on every product this review tells you not to buy. We are publishing it anyway. Verified 8 August 2026.
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2
Analytes On The Current Mushroom COA
0
Mentions Of Muscimol In 250 Products
5x
Dose Ladder, Ending In "Giga Dose"
96
Days Until H.R. 5371 Bites
What We Verified
Read from Yumz Lab's own catalogue feed, product pages and certificate PDFs on 8 August 2026. Every quotation below is the company's own wording or a figure from a certificate we downloaded and read.
The Current COAs Test Only For What Is Absent
The Sour Rainbow certificate (PharmLabs San Diego, SD260310-023, analysed 10 March 2026) reports exactly two analytes: Psilocybin ND and Psilocin ND. "Analyses executed: PSY". Nothing quantifies the active compound. The marshmallow COA from January 2025 is identical in scope
An Older COA Proves They Can Measure It
A 2023 California Ag Labs certificate for Yumz Amanita Gummies quantified Muscimol at 0.19%, 1.91 mg/g, 10.14 mg/serving and 101.38 mg/container, with Ibotenic Acid not detected. So the test exists. The current certificates simply do not run it
And The Product Page Tells You To Escalate
"1/2 piece: Microdose, 1 piece: Light Dose, 2 pieces: Moderate Dose, 3 pieces: Strong Dose, 4 pieces: Mega Dose, 5 pieces: Giga Dose" — a five-fold ladder on a product whose active content the accompanying certificate does not measure
The Company Admits There Is No Evidence Behind It
In its own words: "We utilize a proprietary extract that's different than psilocybin and has no clinical evidence supporting for its use as a therapy." Credit for the candour. But there is no established safe dose to climb a six-rung ladder along
A Free Psychoactive Chocolate Bar On Every Order
The site banner reads "FREE MUSHROOM CHOCOLATE BAR ON ALL ORDERS", and the free-gift item in the catalogue is the Amanita Muscaria Mushroom Chocolate Bar. Buy flower, receive an unrequested psychoactive chocolate bar
Most Of The Catalogue Is Non-Compliant In 96 Days
H.R. 5371, enacted 12 November 2025 with a one-year transition, caps consumable hemp at 0.4mg total THC per innermost container calculated after decarboxylation and inclusive of THCA. The THCA flower, hash, rosin and 6000mg gummies do not survive 12 November 2026
The Certificates, Compared
The 2023 certificate is the informative one. Testing has narrowed since.
| Certificate | Date | Analytes Run | Active Compound Quantified? |
|---|---|---|---|
| Amanita Gummies — California Ag Labs | Sept 2023 | Full tryptamine panel including muscimol, ibotenic acid and muscarine | Yes — muscimol 10.14 mg/serving, 101.38 mg/container |
| Magic Nootropics Marshmallow — PharmLabs | Jan 2025 | Psilocybin, psilocin | No |
| Sour Rainbow Mushroom Gummies — PharmLabs | Mar 2026 | Psilocybin, psilocin | No |
All three certificates come from accredited laboratories, and both PharmLabs certificates carry QR verification. The problem is not the laboratories. It is the scope of what was ordered.
Why Edibles Are Riskier On A GLP-1
This is mechanism, not moralising. Delayed gastric emptying is how these medicines work.
| The Interaction | Why It Happens | What It Means For You |
|---|---|---|
| Unpredictable onset | GLP-1 medicines slow gastric emptying, so an edible that normally acts in 45–90 minutes may be delayed | You redose because nothing happened, then get the stacked dose at once |
| No titration possible | You cannot titrate carefully against a quantity the certificate does not measure | “Start low” is meaningless when low is unknown |
| Four causes of one symptom | Nausea and vomiting are common on GLP-1s, and also typical of Amanita exposure, grayanotoxin, and cannabinoid hyperemesis | You may stop a working medicine, or miss a poisoning |
| Appetite works the wrong way | THC reliably increases appetite; your medicine is there to reduce it | You are paying to push in both directions |
| Low volume, low pressure | Eating and drinking less leaves you volume-depleted; mad honey's grayanotoxins lower heart rate and blood pressure | The worst possible baseline for a hypotensive agent |
Our side-effects guide covers the nausea question, and our provider reviews cover the legitimate treatment routes.
Pros & Cons
Pros
- ✓Per-product state shipping restrictions are published, for example "Does not ship to the following states: CA, AL, DC, MN, NC, ND, VT" on the mushroom gummies
- ✓A Lab Results page carrying 49 certificate PDFs, which is more testing infrastructure than most shops in this category publish
- ✓The THC certificates we spot-checked resolved correctly and came from accredited labs with QR verification and ISO/IEC 17025 accreditation
- ✓An unusually candid admission that the mushroom extract "has no clinical evidence supporting for its use as a therapy"
- ✓Explicit 21+ age statements, and warnings against driving, operating machinery and combining with alcohol
- ✓The 2023 Amanita certificate found ibotenic acid not detected, which is the more toxic precursor and a genuine point in the product's favour
- ✓"CONSULT WITH DOCTOR BEFORE USE" appears in the legal disclaimers
- ✓Hallucination risk is stated on the page rather than buried, in capitals
- ✓Prices are plainly listed and free shipping over $100 is stated
Cons
- ✕The current mushroom COAs test only psilocybin and psilocin — neither of which is the psychoactive compound in these products
- ✕No product page we read states how much active compound a gummy contains, describing it only as a "proprietary extract"
- ✕The words "muscimol" and "ibotenic" appear zero times across all 250 products in the catalogue feed
- ✕A six-rung dose ladder ending in "Giga Dose" on a product with no disclosed active content is the core problem here
- ✕The "Download Sour Rainbow Lab COA Report" link embedded in the product description returns HTTP 404
- ✕The 2023 Amanita certificate has a blank batch field, so it cannot be tied to anything you receive
- ✕The tub photographed on that certificate is labelled "7000 MG" while the certificate found 101.38mg of muscimol per container
- ✕A free Amanita muscaria chocolate bar is added to every order, so people receive a psychoactive product they did not choose
- ✕The Blaze Mad Honey Tablets page never mentions grayanotoxin, blood pressure, heart rate or any interaction, and gives no milligram content
- ✕The Malos marshmallow claims to contain no Amanita, psilocybin, psilocin, cannabinoids or scheduled substances, yet to "hit harder than any other single-serving mushroom treat on the market"
- ✕Sitewide "EXPIRING SOON" urgency banners repeated ten times on a single page
- ✕THC products up to 6000mg per package, and a catalogue of THCA flower, hash, rosin and vapes that federal law reaches on 12 November 2026
- ✕Nothing here is indicated for any condition, and none of it should be combined with a GLP-1 without a prescriber's input
Our Verdict
1.7 / 5 — a dose ladder ending in "Giga Dose", on a product whose certificate does not measure the dose.
The whole review rests on two documents we downloaded and read. The current certificate for Yumz Sour Rainbow Mushroom Gummies comes from PharmLabs San Diego, sample SD260310-023, analysed 10 March 2026 and reported the following day, on an edible matrix of five servings at 4.29 grams each. Under "Analyses executed" it says "PSY", and it reports two analytes: psilocybin, not detected; psilocin, not detected. The certificate for the Magic Nootropics Marshmallow, SD241227-045 from January 2025, has exactly the same two-line scope. Neither psilocybin nor psilocin is the psychoactive compound in an Amanita muscaria product — that is muscimol, and its precursor ibotenic acid — so these certificates rule out two substances nobody claimed were present and say nothing at all about strength. Then the second document. A September 2023 certificate from California Ag Labs for "Amanita Gummies", sample 2309CRG1620.3836, ran a full panel and found muscimol at 0.19 percent, 1.91 mg/g, 10.14 mg per serving and 101.38 mg per container, with ibotenic acid not detected. So the assay exists, Yumz has commissioned it before, and the useful certificate is the three-year-old one. Its batch field is blank, and the tub photographed on it is labelled "7000 MG" — around seventy times the muscimol the same document measured.
What turns that from a documentation gripe into a safety objection is the instruction printed alongside it. The product page reads: "5 gummies per bag … 1/2 piece: Microdose, 1 piece: Light Dose, 2 pieces: Moderate Dose, 3 pieces: Strong Dose, 4 pieces: Mega Dose, 5 pieces: Giga Dose." On the same page the company writes, to its credit, "We utilize a proprietary extract that's different than psilocybin and has no clinical evidence supporting for its use as a therapy", and warns in capitals of "RISK OF HALLUCINATIONS, TRIGGERING OF SUPPRESSED TRAUMAS AND LOSS OF MOTOR SKILLS". Hold those together. A buyer is being invited to climb a fivefold ladder on a substance the seller declines to name — the words "muscimol" and "ibotenic" appear zero times across all 250 products in the catalogue feed — whose quantity the accompanying certificate does not measure, and for which the seller says no clinical evidence exists. There is no dose-response literature behind a ladder like that, and no way for the buyer to convert "Giga Dose" into milligrams. That is the finding, and it is sufficient on its own.
The category has already shown what those two gaps cost. In late June 2024 Prophet Premium Blends of Santa Ana recalled all Diamond Shruumz cones, chocolate bars and gummies for toxic levels of muscimol from Amanita mushrooms; by the final tally on 31 October 2024 the CDC had recorded 180 illnesses across 34 states, 73 hospitalisations and three possible deaths, with confusion, seizures, loss of consciousness, abnormal heart rates and vomiting reported, several patients in intensive care on ventilators, and children among them. FDA testing also found undisclosed ingredients including psilacetin and kava derivatives. That was a different company and no Yumz product is implicated. We raise it because the two failure modes were muscimol quantity and undisclosed content — exactly the two things a certificate reporting only "psilocybin: not detected" cannot address. Against that background, Yumz adds a free Amanita muscaria chocolate bar to every order, per its own site banner. Someone buying flower receives an unrequested psychoactive product in the precise format that put children in hospital in 2024.
The mad honey tablets worry us for a different reason: the risk is cardiovascular and the page is silent about it. Blaze Mad Honey Tablets, three for $19.99, are sold as promoting "clarity, calm, and controlled effects", with dosing given as one tablet, two, or "All 3 for stronger sensory and body effects". Mad honey contains grayanotoxins, which characteristically cause bradycardia and hypotension along with dizziness, nausea and vomiting; the page mentions none of that, names no interaction with blood-pressure or heart-rate medication, and states no milligram content of anything. Readers of this site disproportionately have hypertension, disproportionately take drugs that lower blood pressure or heart rate, and are frequently mildly volume-depleted because they are eating and drinking less. And the Malos marshmallow makes the disclosure problem plain in two sentences: it is "crafted without Amanita Muscaria, Psilocybin, Psilocin, Cannabinoids, synthetic compounds, or scheduled substances" and yet "designed to hit harder than any other single-serving mushroom treat on the market". Both cannot be true of an inert mushroom blend.
Two closing points. There is a real interaction argument for this audience, and it is mechanical rather than moral: GLP-1 medicines slow gastric emptying, which is part of how they suppress appetite, so an edible's onset becomes slower and less predictable — the classic setup for redosing and then receiving everything at once. That is bad enough with a labelled 10mg gummy; with an unlabelled one it is indefensible. And commercially, most of this catalogue has an expiry date: H.R. 5371, enacted 12 November 2025 with a one-year transition, limits consumable hemp to 0.4mg of total THC per innermost container, calculated after decarboxylation and inclusive of THCA, from 12 November 2026 — 96 days from this review. The THCA flower, hash, live rosin, carts and 6000mg gummies are the products that closure was written to end, so do not buy an $800 wholesale bundle now. We should be fair where fairness is due: 49 certificates on the Lab Results page, per-product state restrictions, real 21+ and driving warnings, ibotenic acid not detected in 2023, and a frank admission that there is no clinical evidence. That is why this is 1.7 and not 1.0. But we earn 15 percent on everything here, and we are still telling you not to buy the mushrooms or the honey.
Visit Yumz LabFrequently Asked Questions
What is the single most important thing to know?
That the laboratory certificates for the mushroom products do not measure the active ingredient. We pulled them and read them. The current certificate for Yumz Sour Rainbow Mushroom Gummies is from PharmLabs San Diego, sample ID SD260310-023, analysed 10 March 2026 and reported 11 March 2026, on an edible matrix with 5 servings at 4.29g each. Under "Analyses executed" it says "PSY". It reports two analytes: Psilocybin, not detected; Psilocin, not detected. That is the entire certificate. The marshmallow certificate, SD241227-045, analysed 14 January 2025, is identical in scope — psilocybin and psilocin, both not detected. Neither psilocybin nor psilocin is the psychoactive compound in an Amanita muscaria product; the relevant compounds are muscimol and its precursor ibotenic acid. So these certificates confirm the absence of two substances nobody claimed were present, and tell you nothing whatsoever about how strong the product is. What makes this pointed rather than merely disappointing is that an older certificate proves the test exists and that Yumz has commissioned it before: a September 2023 California Ag Labs certificate for "Amanita Gummies", sample 2309CRG1620.3836, quantified Muscimol at 0.19 percent, 1.91 mg/g, 10.14 mg per serving and 101.38 mg per container, with Ibotenic Acid not detected. That is a real, useful, informative certificate. The current ones test less.
Why does that matter so much on this particular product?
Because the same product page instructs you to escalate the dose fivefold. Verbatim, under "Dosing Instructions": "5 gummies per bag", then "1/2 piece: Microdose, 1 piece: Light Dose, 2 pieces: Moderate Dose, 3 pieces: Strong Dose, 4 pieces: Mega Dose, 5 pieces: Giga Dose". Set that beside the company's own statement in the same description: "We utilize a proprietary extract that's different than psilocybin and has no clinical evidence supporting for its use as a therapy." And beside its own warning, in capitals: "WARNING: RISK OF HALLUCINATIONS, TRIGGERING OF SUPPRESSED TRAUMAS AND LOSS OF MOTOR SKILLS." Put those three together and the position is this: a psychoactive product whose active compound is not named on the page, is not quantified on the accompanying certificate, and by the seller's own account has no clinical evidence behind it — sold with a ladder inviting you to take five times the smallest suggested amount. There is no way for a buyer to know what a "Giga Dose" is in milligrams, and there is no published dose-response for the seller to have based the ladder on. If you take the 2023 certificate's figure of roughly 10mg of muscimol per gummy as a rough guide, five gummies is on the order of 50mg — but we cannot tell you that this applies to the bag you would receive, because the current certificate does not measure it and the 2023 one has a blank batch field.
What is muscimol, and how does it compare to psilocybin?
It is a different drug with a different mechanism, and the marketing language obscures that. Psilocybin, the compound in what most people mean by magic mushrooms, is a serotonin receptor agonist and a Schedule I controlled substance. Amanita muscaria — the red-and-white toadstool — instead contains ibotenic acid, which decarboxylates to muscimol, and muscimol acts on GABA-A receptors, the same broad system as alcohol and benzodiazepines. That is why accounts of it read more like heavy sedation, dissociation and delirium than like a classical psychedelic, and why nausea, vomiting, ataxia, confusion and, at higher exposures, seizures are described. Amanita muscaria is not currently federally scheduled in the United States, which is the basis for calling these products legal, and several states restrict them. Ibotenic acid is generally considered the more troublesome of the two, so the 2023 certificate finding it not detected is a genuine point in the product's favour and we credit it. But the marketing does not draw any of these distinctions clearly. The line is "designed to give you a sensation similar to traditional Magic Mushrooms" with "UNDETECTABLE levels of psilocybin and psilocin", and the products have been titled "Magic Mushroom Gummies", "Legal Mushroom Gummies", "Magic Nootropic Gummies" and "Legal Psychedelic" at various points. A buyer who thinks they are taking a low dose of something psilocybin-like is misinformed about which receptor system they are affecting.
Has this category caused real harm?
Yes, and the specifics are exactly the gaps we found here — though we want to be precise that this involved a different company. In late June 2024 Prophet Premium Blends of Santa Ana, California recalled all Diamond Shruumz infused cones, chocolate bars and gummies because of toxic levels of muscimol from Amanita mushrooms. By 31 October 2024, the final reported tally, the CDC recorded 180 illnesses across 34 states with 73 hospitalisations and three possible deaths. Reported symptoms included confusion, seizures, loss of consciousness, abnormal heart rates, nausea and vomiting; several patients were admitted to intensive care and required intubation, and multiple children were among those hospitalised. FDA testing also turned up ingredients that were not disclosed on the label, including psilacetin and kava derivatives. To be completely clear: that was Diamond Shruumz, not Yumz Lab, and no Yumz product is implicated in it. We raise it because of what the failure modes were. The recall was for muscimol quantity, and the FDA found undisclosed ingredients. Those are precisely the two things a certificate testing only for psilocybin and psilocin cannot rule out. A certificate that reports "psilocybin: not detected" is not evidence that a product contains a safe amount of muscimol, or that it contains nothing else. When the worst outbreak in a category is caused by dose and by undisclosed content, testing for neither is not a formality.
Why is any of this on a GLP-1 site?
Because of one pharmacological fact that makes edibles genuinely riskier on these medicines. GLP-1 receptor agonists slow gastric emptying — that is not a side effect, it is part of how they reduce appetite. An oral edible whose onset would normally be forty-five to ninety minutes can therefore be substantially delayed and less predictable while you are on semaglutide or tirzepatide. That is the classic setup for the most common edible accident there is: nothing happens, so you take another, and then the whole stacked dose arrives at once when your stomach finally empties. Now combine that with a product whose active content is not disclosed and whose certificate does not measure it, and with a page inviting you to climb from "Light Dose" to "Giga Dose". You cannot titrate carefully against an unknown quantity with unpredictable absorption. Second, the symptom overlap is a real clinical problem. Nausea and vomiting are among the commonest effects of GLP-1 treatment. Nausea and vomiting are also characteristic of Amanita muscaria exposure, of grayanotoxin poisoning from mad honey, and of cannabinoid hyperemesis syndrome. If you are vomiting, you and your clinician now have four candidate explanations, and the wrong conclusion goes either way: you stop a medicine that was working, or you fail to recognise a poisoning. Third, and more prosaically, THC reliably increases appetite, which works directly against the purpose of the treatment you are paying for. And if you are eating little and vomiting, you are volume-depleted, which is the worst possible baseline for anything that lowers blood pressure.
What is the mad honey product, and why does it worry you most?
It worries us most because the risk is cardiovascular and the page says nothing about it. Yumz lists Blaze Mad Honey Tablets, three tablets for $19.99, described as "three mushroom inspired tablets infused with wild mad honey, designed to deliver a portable, easy-to-dose experience that promotes clarity, calm, and controlled effects", with dosing guidance of "1 tablet for mild clarity and calm focus, 2 for moderate, uplifting mood shifts, All 3 for stronger sensory and body effects". What the page does not say is what mad honey is. It is honey produced from the nectar of certain rhododendron species, and it contains grayanotoxins, which act on sodium channels and characteristically produce bradycardia and hypotension along with dizziness, sweating, nausea and vomiting; poisonings are well described in the medical literature and severe cases have required atropine and cardiac monitoring. The page carries no mention of grayanotoxin, no mention of heart rate or blood pressure, no warning for people taking antihypertensives or rate-controlling drugs such as beta blockers, and no milligram content of anything — just "1 tablet", "2", "all 3". For this site's readers that combination is bad on its own terms: people on GLP-1 medicines frequently have hypertension and cardiovascular comorbidity, frequently take medications that lower blood pressure or heart rate, and are frequently mildly dehydrated because they are eating and drinking less. Adding an undisclosed-dose bradycardic, hypotensive agent to that is not a wellness decision. If you are on any cardiac or blood-pressure medication, this product is not for you, and "clarity and calm focus" is not a description of its pharmacology.
What about the marshmallow that contains nothing?
It is the clearest illustration of the disclosure problem on the whole site. The Malos Mushroom Marshmallow, $9.99, five grams, is described as "Infused with our proprietary mushroom blend" and "crafted without Amanita Muscaria, Psilocybin, Psilocin, Cannabinoids, synthetic compounds, or scheduled substances, making it a compliant and innovative option for wellness seekers". Two sentences later it is "designed to hit harder than any other single-serving mushroom treat on the market". Read those together. A product that explicitly contains none of the known psychoactive mushroom compounds, no cannabinoids, nothing synthetic and nothing scheduled, is being sold on the promise that it hits harder than everything that does contain them. Both statements cannot be true of an inert culinary mushroom blend. Either the claim is empty marketing, in which case you are paying $9.99 for a marshmallow, or something psychoactive is present that the description does not name. We cannot tell you which, because the description names no active ingredient and we found no certificate quantifying one. One detail is suggestive without being conclusive: the product does not ship to CA, CO, LA, ND, SD or UT, and Louisiana is a state that specifically restricts Amanita muscaria. A shipping restriction to Louisiana on a product declared free of Amanita muscaria is at minimum an odd combination. Our advice is simply that "proprietary blend" is not an ingredient list, and a psychoactive claim without an ingredient is a reason to decline.
What happens to the THC side of the catalogue?
Most of it stops being federally lawful in about three months. H.R. 5371 was enacted on 12 November 2025 with a one-year transition, meaning that from 12 November 2026 — 96 days after the date of this review — consumable hemp products are limited to 0.4 milligrams of total THC per innermost retail container, with total THC calculated after decarboxylation and inclusive of THCA. That last clause is the one that matters here, because closing the THCA loophole was the explicit point of it. Yumz Lab's catalogue is built almost entirely on the products that closure eliminates: THCA flower by the ounce, THCA hash, THCA live rosin, THCA sauce with diamonds, THCA cartridges, disposable vapes marketed as D9 plus THCA plus THCP, and edibles at 1000mg, 3000mg, 6000mg and higher. A 6000mg gummy pack is four orders of magnitude above a 0.4mg container limit. We are not lawyers and this is not legal advice, and the practical enforcement picture in the months after the deadline is genuinely uncertain. But if you are considering a subscription, a wholesale bundle at $800, or stocking up, understand that you are buying into a product category with a legislated end date that is now inside a single quarter. Buying perishable inventory ahead of a compliance cliff is a poor plan, and any shop still selling this catalogue in December 2026 will be worth looking at very carefully.
Is there anything genuinely good here?
Yes, and it deserves saying, because our objection is specific rather than general. Yumz publishes a Lab Results page carrying 49 certificate PDFs, which is more testing infrastructure than most shops in this category bother with, and the THC certificates we spot-checked resolved correctly and came from accredited laboratories with QR verification and ISO/IEC 17025 accreditation. Per-product state shipping restrictions are published plainly rather than left for the customer to discover at checkout. Age statements are explicit at 21 and over. The warnings about hallucinations, loss of motor skills, driving, machinery and alcohol are on the page in capitals rather than buried in a footer, and "CONSULT WITH DOCTOR BEFORE USE" appears in the disclaimers. Most strikingly, the company states in its own product copy that the extract "has no clinical evidence supporting for its use as a therapy" — a sentence a great many supplement sellers would never print, and one that we would rather see than a fabricated study. The 2023 certificate finding ibotenic acid not detected is a real quality signal. So this is not a shop that hides everything. It is a shop that discloses a good deal and then omits, on the mushroom line specifically, the one number that would let a buyer dose safely — while telling that buyer to climb to a "Giga Dose".
So what is your recommendation?
Do not buy the mushroom products, do not buy the mad honey, and if you are on a GLP-1 medicine, talk to your prescriber before adding any of this. Our score is 1.7 out of 5, which is among the lowest we have given, and it comes down to a single sentence: a psychoactive product sold with a dose ladder up to "Giga Dose" should have its active compound quantified on the accompanying certificate, and here it does not. Everything else follows. If you nonetheless proceed, the harm-reduction version is: take the smallest fraction of one unit, wait several hours rather than the usual one, do not redose the same day, never combine with alcohol or any sedative, do not drive, have a sober person present, and be aware that a GLP-1 will slow how quickly anything you swallow takes effect. Refuse the free chocolate bar if you can, and if it arrives anyway, treat it as a psychoactive product and store it away from anyone else in the house, particularly children — the format at the centre of this category's worst outbreak was a chocolate bar. If you develop confusion, a slow or irregular heartbeat, seizures, persistent vomiting or loss of consciousness, that is an emergency and worth telling the clinician exactly what was taken. And our disclosure: we earn 15 percent of anything you buy through our link, including everything in this answer we have just advised you against.
Ask For The Muscimol Number.
If a shop sells you a psychoactive product with a dose ladder, the certificate should say how much active compound is in one unit. Here it does not. That is a reason to decline, not to start low.
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Read Review →Medical Disclaimer: This page is informational and is not medical advice, and nothing here is an endorsement or instruction to use any product described. These are unapproved intoxicating products. None is FDA-approved to diagnose, treat, cure or prevent any disease, none is a treatment for obesity, diabetes or any other condition, and none should be used as a substitute for prescribed medication. Amanita muscaria products contain muscimol and may contain ibotenic acid, which act on the central nervous system; reported effects include sedation, dissociation, confusion, delirium, ataxia, nausea, vomiting and, at higher exposures, seizures and loss of consciousness. Mad honey contains grayanotoxins, which can cause bradycardia, hypotension, dizziness, sweating, nausea and vomiting, and severe poisoning has required emergency treatment; anyone taking antihypertensive, antiarrhythmic or rate-controlling medication such as a beta blocker, or with any cardiac condition, should not use such products. Do not combine any of these products with alcohol, benzodiazepines, opioids, sedatives or any other central nervous system depressant. Do not drive or operate machinery. These products are for adults aged 21 and over where lawful and are restricted or prohibited in several US states and many countries. Do not use if pregnant, breastfeeding, or with a personal or family history of psychosis, bipolar disorder or seizure disorder. GLP-1 receptor agonists slow gastric emptying, which can delay and make unpredictable the absorption of anything taken by mouth, including edibles; do not add any intoxicating or appetite-affecting product to GLP-1 treatment without discussing it with your prescriber, and be aware that persistent vomiting on these medicines can cause dehydration and warrants medical attention rather than self-management. Confusion, seizures, a slow or irregular heartbeat, chest pain, persistent vomiting or loss of consciousness after ingesting any of these products is a medical emergency: call emergency services or a poison control centre and tell them exactly what was taken. Consult a licensed clinician before starting or changing any treatment.
Date reviewed: 8 August 2026. Product titles, prices, descriptions and quoted copy were read from yumzlab.com on that date, including its public product catalogue feed covering 250 products, and may change. Certificates of analysis were downloaded and read directly. The current Sour Rainbow certificate is from PharmLabs San Diego, 6996 Mesa Ridge Rd #A, San Diego, CA 92121, sample ID SD260310-023 (134661), sample name 'Yumz - Mushroom Gummies - Sour Rainbow', matrix Edible, received 10 March 2026, analysed 10 March 2026, reported 11 March 2026, unit mass 21.469 g, 5 servings, serving size 4.29 g, 'Analyses executed PSY', reporting Psilocybin (PSCY) ND and Psilocin (PSCI) ND and no other analyte, signed by Brandon Starr, Quality Assurance Manager, ISO/IEC 17025:2017 Acc. 85368. The marshmallow certificate is PharmLabs San Diego sample SD241227-045 (104304), 'Yumz Magic Nootropics - Marshmallow', received 26 December 2024, analysed 14 January 2025, reported 15 January 2025, unit mass 9.561 g, 2 servings, serving size 4.78 g, 'Analyses executed PSY', reporting Psilocybin ND and Psilocin ND, with a laboratory note reading 'COA Update 01/15/25: Updated Potency results'. The earlier certificate is from California Ag Labs, 430 C St, Marysville, CA 95901, Lic# C8-0000001-LIC, sample ID 2309CRG1620.3836, 'Amanita Gummies', strain Amanita, matrix Ingestible, type Soft Chew, client Yumz Lab, 24551 Del Prado Ave Suite 543, Dana Point, CA 92629, received 22 September 2023, tested 27 September 2023, completed 28 September 2023, reporting Muscimol at 0.19%, 1.91 mg/g, 10.14 mg/unit, 10.14 mg/serving and 101.38 mg/container, Total Tryptamines 10.14 mg/serving, and Ibotenic Acid, Psilocybin, Psilocin, (+)-Muscarine Chloride and all other listed tryptamines not detected, with notes '1 Unit = Gummy, 5.3106g. 1 unit(s) per serving. 10 serving(s) per container', signed by Ronald Montez, Lab Director and Seth Dixon, PhD, Chief Chemist; the batch and batch number fields on that certificate are blank, and the product tub shown in its sample photograph is labelled '7000 MG'. The link labelled 'Download Sour Rainbow Lab COA Report' inside the Sour Rainbow product description resolves to a Shopify file URL that returned HTTP 404 on two attempts, although a current Sour Rainbow certificate is reachable from the site's Lab Results page, which carried 49 certificate PDFs of which 8 related to mushroom or honey products. Quoted product copy: the Sour Rainbow page states '5 Gummies per/bag', '0.00% Psilocybin', 'Our team of expert scientists has spent years perfecting this one-of-a-kind nootropic formula, designed to give you a sensation similar to traditional Magic Mushrooms', 'With UNDETECTABLE levels of psilocybin and psilocin, we utilize a proprietary remediation process to ensure a solvent-free, 100% legal experience', 'We utilize a proprietary extract that's different than psilocybin and has no clinical evidence supporting for its use as a therapy', the dosing ladder '1/2 piece: Microdose 1 piece: Light Dose 2 pieces: Moderate Dose 3 pieces: Strong Dose 4 pieces: Mega Dose 5 pieces: Giga Dose', the restriction 'Does not ship to the following states: CA, AL, DC, MN, NC, ND, VT', and the warning 'WARNING: RISK OF HALLUCINATIONS, TRIGGERING OF SUPPRESSED TRAUMAS AND LOSS OF MOTOR SKILLS. UNDER AGE SALE PROHIBITED. MUST BE 21+ TO PURCHASE. DO NOT DRIVE OR OPERATE HEAVY MACHINERY WHILE UNDER THE INFLUENCE… CONSULT WITH DOCTOR BEFORE USE.' The Malos Mushroom Marshmallow page, $9.99, net weight 5 g, states it is 'Infused with our proprietary mushroom blend' and 'crafted without Amanita Muscaria, Psilocybin, Psilocin, Cannabinoids, synthetic compounds, or scheduled substances, making it a compliant and innovative option for wellness seekers', that it is 'designed to hit harder than any other single-serving mushroom treat on the market', and that it 'Does not ship to the following states: CA, CO, LA, ND, SD, UT'. The Blaze Mad Honey Tablets page, $19.99 for 3 count, describes 'three mushroom inspired tablets infused with wild mad honey, designed to deliver a portable, easy-to-dose experience that promotes clarity, calm, and controlled effects', with dosing '1 tablet for mild clarity and calm focus, 2 for moderate, uplifting mood shifts, All 3 for stronger sensory and body effects' and states the tablets are 'third-party lab-tested'; we found no grayanotoxin content, cardiovascular warning or milligram disclosure on that page. Site banners observed read 'FREE SHIPPING ON ORDERS $100.00+', 'FREE MUSHROOM CHOCOLATE BAR ON ALL ORDERS' and a 'SUMMER SPLASH | 33% OFF | ZAZA33' urgency message repeated ten times on one page; the catalogue's free-gift line item is titled 'Yumz Amanita Muscaria Mushroom Chocolate Bar | White Shroom Chocolate (100% off)' at $0.00. A case-insensitive search of the full 250-product catalogue feed found 0 occurrences of 'muscimol' and 0 of 'ibotenic', against 8 occurrences of 'amanita' and 14 of 'psilocybin'. Regarding the Diamond Shruumz matter, which involved a different company and in which no Yumz Lab product is implicated: Prophet Premium Blends of Santa Ana, California recalled all Diamond Shruumz infused cones, chocolate bars and gummies in late June 2024 over toxic levels of muscimol from Amanita mushrooms; as of 31 October 2024, the final reported figures, the CDC recorded 180 illnesses in 34 states including 73 hospitalisations and 3 possible deaths, with reported symptoms including confusion, seizures, loss of consciousness, abnormal heart rates, nausea and vomiting, several patients requiring intensive care and intubation, and children among those hospitalised; FDA testing identified undisclosed ingredients including psilacetin and kava derivatives. Regarding federal law: H.R. 5371 was enacted 12 November 2025 with a one-year transition, and from 12 November 2026 — 96 days after the date of this review — limits consumable hemp products to 0.4 mg of total THC per innermost retail container, with total THC calculated after decarboxylation and inclusive of THCA. We are not lawyers and this is not legal advice. Descriptions of muscimol and grayanotoxin pharmacology reflect established toxicology rather than any claim by the seller. We did not purchase or test any product. Katalys offer #641 lists 15.00% default commission.
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