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What is 4-HO-MET?

4-Hydroxy-N-methyl-N-ethyltryptamine, or 4-HO-MET, is a novel psychedelic substance of the Tryptamine class. 

4-HO-MET is chemically related to psilocin, the active ingredient in psilocybin mushrooms (“magic mushrooms”). It was first synthesized by Alexander Shulgin, who documented it in his 1997 book “TiHKAL” (“Tryptamines I Have Known and Loved”).

For more information on 4-HO-MET, check out our Ultimate Guide.

What are the Effects of 4-HO-MET?

4-HO-MET is often reported to share some similarities with psilocybin (magic mushrooms) and LSD. Though the differences are much more pronounced and easily distinguishable than those between say 1P-LSD and LSD. 4-HO-MET is generally shorter acting and is seen as a “recreational” psychedelic.

Some of the most commonly reported effects of 4-HO-MET are: 

  •     Stimulation
  •     Spontaneous bodily sensations
  •     Colour enhancement
  •     Visual hallucinations – particularly of a geometric nature
  •     Analysis enhancement
  •     Fits of laughter and an increased sense of humor

Potential Side Effects of 4-HO-MET

  •     Nausea
  •     Muscle contractions
  •     Increased heart rate
  •     Excessive yawning
  •     Increased salivation
  •     Temperature regulation suppression
  •     Seizure


4-HO-MET is classified as illegal in:

  •     Germany
  •     Austria
  •     United Kingdom
  •     Sweden
  •     Switzerland

This list is not exhaustive, so do your own research into the legal status in your country before ordering!

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All products are strictly for research purposes only and not for human consumption.

Store in a cool, dry place away from sunlight. Lysergamides and Tryptamines should be kept below 20'c where possible

Product Name: 4-HO-MET fumarate

Other Name(s): 4-hydroxy-N-methyl-N-ethyltryptamine fumarate

IUPAC Name: 3-(2-(ethyl(methyl)amino)ethyl)-1H-indol-4-ol fumarate

CAS: 77872-41-4

Molar Mass: 218.29 g/mol

4-HO-MET Fumarate

4.90 / 5 (20)
- +
NMR Measurment Report
NMR Measurement
Report Available

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Sample name: ST-109 10-3-2021
Spectrometer: Bruker 500 MHz Solvent: D2O
Expected compound:
Identified compound:
4-HO-MET hemifumarate
Estimated purity:

Click here for the full report.

SKU: 4HOMET Category: Tags: , ,
Read Reviews

20 reviews for 4-HO-MET Fumarate

  1. imbru955 (verified owner)

    Absolutely amazing, visuals were stunning.

  2. Jfraktal

    Good quality, i recommend to use volumetric solution for make sure of the dose you make take to your plants. 3 or 4 mg can really change the experience.

  3. TheW (verified owner)

    Very smooth, made my rats very creative

  4. pionaze (verified owner)

    best visuals I’ve seen with a product perfect
    little or big dose can change completely your trip that’s why powder is the best solution

  5. Oeleiop (verified owner)

    People make it seem like it is an easy going chem, but in my case I found it to be “emotionally complex” which can be beautiful but also challenging.

  6. TheW (verified owner)

    An experiment which cure my depression

  7. J0rdan12

    The best tryptamine, afetr lsd.
    Visuals are more sharp then lsd, but it’s less introspective.

  8. Z1 (verified owner)

    Very effective for visuals with less psychological consequences, meaning lower risk of bad trip.

  9. Shulg (verified owner)

    Excellent tryptamine!

    Always have good times with Metocin
    Kinda euphoric, bodyhigh quite stimy, lot of laugh, and visual geometry, colors and distortions are very nice!
    Headspace very handable in addition, not so tricky to research even in high doses.

  10. Forestakias

    Kicks ass. Great visuals, pretty light headspace (no paranoia, confusion or thought loops), decent music appreciation but not the longest legs. Will keep researching 🥳🥳🥳

  11. fred98

    No joke, this is amazing

  12. PureResearch (verified owner)

    Most colorful and gentle psychedelic out there, definitely one of my favorite

  13. Nilhuse721

    The Most beautifully experience i had in years ! Must and stock up ! Mix between LSD, MDMA, shrooms ! And not long last for most 😉 5hours top ! Have fun researching :))

  14. Valentin Bacquet (verified owner)

    4-HO-MET is a perfect substance to start with psychedelics, easy going
    Be careful with serotoninergics potential interactions

  15. Noir

    Fascinating substance. Comes very quickly to the peak and holds it for a pleasant time. It is not exhausting and so easy on the headspace that it always kept in control. The visuals I would compare similar to the Lysergs. Would say 70/30 visuals / headspace. Creativity can be pushed a lot. Bodyload is in the absolutely acceptable range. Overall, highly recommended.

  16. Lyon4054

    4-HO-MET is absolutely amazing it feels incredibly smooth and has the most amazing visuals of all tryptamines for me.
    4-HO-MET has less confusion than other psychedelics for me which makes it more recreational while it still can go deep.
    4-HO-MET is overall a mostly visual experience which is the appeal for it to me I absolutely recommend everyone who hasn’t done this one yet to give it a try and I recommend you insufflate this substance 😉

  17. Met O’Cin

    Perfect in every way

  18. Psyke33 (verified owner)

    Seems great ! Need more research 🙂

  19. dis play name (verified owner)

    Excellent product, shipping faster than anticipated A+

  20. Ethan

    Extremely potent stuff! At low doses you’ll have an extremely light and very fun and beautiful time, at higher doses this chemical is incredibly and amazingly weird

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