4-HO-MET vs Magic Truffles: Key Differences Explained

4-HO-MET, also known as metocin or methylcybin, is a synthetic tryptamine that is structurally related to psilocin, the active compound in magic truffles, but is chemically distinct and produced in a laboratory rather than occurring naturally. People researching microdosing regularly encounter 4-HO-MET, most often through so-called "mushroom drops" or as a standalone research chemical. This article explains how it relates to magic truffles, why the two are not interchangeable, and why 4-HO-MET is sold under a strict research-only disclaimer. Microdosing.shop Editorial Team, 8 augustus 2026

What is 4-HO-MET?

4-HO-MET (4-hydroxy-N-methyl-N-ethyltryptamine) was first synthesized by chemist Alexander Shulgin in the 1970s and later documented in the scientific literature by Repke and colleagues in 1981. It belongs to the tryptamine class and acts primarily as a non-selective serotonin receptor agonist, including at the 5-HT2A receptor, the same receptor family implicated in the effects of classic psychedelics.

Structurally, 4-HO-MET is the 4-hydroxyl analogue of methylethyltryptamine (MET) and a close relative of psilocin. That structural relationship is why it is commonly described as a "psilocin analogue" rather than a mushroom or truffle derivative.

Why 4-HO-MET is often confused with "mushroom drops"

One of the most common search terms that leads people to 4-HO-MET is "mushroom drops" or "paddo druppels", not 4-HO-MET itself. This is a naming issue rather than a chemical one. Online, the term "mushroom drops" is used loosely for any liquid product associated with mushrooms or truffles, and in practice it covers several different product categories, including natural extracts and synthetic research chemicals.

4-HO-MET is one of the substances that has been found in products marketed under that umbrella term, but it is not a mushroom or truffle product and contains no natural fungal material. Any overlap in how people search for these products is linguistic and contextual, not a reflection of what the product actually is. Anyone specifically looking for a natural psilocybin or psilocin product should look for magic truffles by name, not for drops or liquid formats sold under a mushroom-related label.

What are magic truffles?

Magic truffles are the sclerotia of psilocybin-containing fungi, sold legally in the Netherlands. Unlike 4-HO-MET, truffles are a natural product that contains a mixture of compounds rather than a single isolated molecule.

Laboratory potency testing on truffles and mushrooms typically identifies psilocybin, its active metabolite psilocin, and several minor tryptamines such as baeocystin, norbaeocystin, and aeruginascine. Psilocybin itself is a prodrug, meaning the body converts it into psilocin before any effect is felt, which is part of why truffles tend to have a slower onset than 4-HO-MET.

The core difference: single compound vs multi-compound profile

The most meaningful distinction between the two is not potency but composition. Magic truffles deliver a mixture of related tryptamines at once, an effect some researchers and members of the psychedelic community refer to informally as the entourage effect, borrowing a term originally used in cannabis research. 4-HO-MET, by contrast, is a single isolated compound with a more uniform, one-dimensional pharmacological profile.

This difference in composition is also reflected in how each substance is typically described anecdotally: truffles are associated with a broader, more introspective experience, while 4-HO-MET is associated with a faster onset and a comparatively narrower effect profile.

Legal status: why it varies by country

Magic truffles are explicitly legal in the Netherlands and fall outside the Opium Act, which only covers psilocybin-containing mushrooms directly. 4-HO-MET occupies a different legal category entirely: in the Netherlands it falls under general product safety law (the Warenwet) rather than narcotics legislation, because it is not listed on any Opium Act schedule.

Internationally, the picture is far less consistent. 4-HO-MET is restricted in the United Kingdom under the Psychoactive Substances Act, illegal in Austria under the Neue-Psychoaktive-Substanzen-Gesetz, and prohibited in Brazil. In the United States it is not named on the federal controlled substances list, but because of its structural similarity to psilocin, a Schedule I substance, it can potentially fall under the Federal Analogue Act if marketed or sold for human consumption. Legal status can also change without notice as countries update novel psychoactive substance legislation.

Why the "not intended for human consumption" disclaimer exists

Every 4-HO-MET product sold as a research chemical carries a disclaimer stating it is not intended for human or animal consumption and is supplied exclusively for analytical, educational, and scientific research. This is not a marketing formality, it reflects an actual legal requirement.

Substances sold in the EU as consumable products must be approved as a food, food supplement, or medicine under EU and Dutch food safety law. 4-HO-MET has not undergone this approval process, so it cannot legally be marketed, labelled, or sold as something intended for consumption, regardless of how it is actually used by individuals. Selling it strictly as a research chemical is the legal framework that allows it to be offered at all in jurisdictions where it is not explicitly scheduled. This is also why responsible research chemical suppliers restrict shipping to countries where import or possession is explicitly regulated or prohibited, rather than shipping everywhere by default.

4-HO-MET and magic truffles side by side

Origin: 4-HO-MET is synthetic and lab-produced. Truffles are a natural fungal product.
Composition: 4-HO-MET is a single isolated compound. Truffles contain a mixture of psilocybin, psilocin, and minor tryptamines.
Onset: 4-HO-MET is generally reported to have a faster onset, as it does not require metabolic conversion. Truffles rely on the conversion of psilocybin to psilocin first.
Legal category (Netherlands): Truffles fall under an Opium Act exception. 4-HO-MET falls under the Warenwet as a research chemical.
International legal status: Truffles are a Dutch legal peculiarity. 4-HO-MET's status varies sharply by country and can change.
Research basis: Truffles and their compounds have a longer research history. Human safety data on 4-HO-MET specifically remains very limited.

Frequently asked questions

Is 4-HO-MET legal?

In the Netherlands, 4-HO-MET is not scheduled under the Opium Act and falls under general product safety law instead. Its legal status varies significantly by country, and it is restricted or prohibited in several jurisdictions, including the United Kingdom and Austria. Always verify local law before purchase or use.

Why does 4-HO-MET carry a research-only disclaimer if magic truffles don't?

Truffles benefit from a specific Dutch legal exception that predates current novel psychoactive substance rules. 4-HO-MET has no such exception and has not been approved as a food or supplement under EU law, so it can only be offered legally when sold and labelled strictly as a research chemical.

Are "mushroom drops" the same as 4-HO-MET?

Not necessarily. "Mushroom drops" is a loose, informal term covering several different liquid products, and 4-HO-MET is only one of the substances sometimes found under that label. It is not derived from mushrooms or truffles and contains no natural fungal material.

What is the main difference in effects between 4-HO-MET and magic truffles?

Truffles contain multiple related compounds and are generally described as producing a broader, more introspective experience with a slower onset. 4-HO-MET is a single compound generally associated with a faster onset and a narrower effect profile, though individual reports vary and formal human research is limited.

For a deeper look at the compounds found in magic truffles, see our research library on psilocybin and psilocin, developed with the Microdosing Institute. To explore 4-HO-MET and related research chemicals directly, visit our research chemicals category.

Published August 8, 2026, by the Microdosing.shop Editorial Team. Reference: Repke, D.B. et al. (1981), documented in Shulgin's TiHKAL.

This content is intended for educational and research purposes only. Products and substances discussed are not intended for medical use or human consumption. Always verify the legal status of any substance in your jurisdiction before purchase or use.