Introduction After many many years of scrolling through the vast library of experience reports here on Erowid, I thought that it was this experience with 4-ho-MIPT Fumarate that I had recently which was the most deserving of my experiences with psychedelics to type up a report for.
4-HO-MiPT
Well-documented
Well-documented
Multiple authoritative sources agree on dosing and effects.
- 5 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 28 combo interactions documented
- toxicity data (PsychonautWiki)
- classified Research-chemical
Well-documented
Multiple authoritative sources agree on dosing and effects.
- 5 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 28 combo interactions documented
- toxicity data (PsychonautWiki)
- classified Research-chemical
Aliases: 4-ho, Ho-mipt, Miprocin, 4homipt, homipt
Summary
4-Hydroxy-N-methyl-N-isopropyltryptamine (also known as 4-HO-MiPT, and Miprocin) is a novel psychedelic substance of the tryptamine class that produces psilocybin-like psychedelic effects when administered. It is part of a series of psychedelic substituted tryptamines such as 4-AcO-DMT, 4-HO-MET, 4-HO-DiPT that are considered to produce variations of the core psychedelic effects typified by psilocin.
Perspectives
“4-HO-MiPT is a chemical I have oft revisited. It carries a gripping bodyload on the comeup, a turbulent ascent, but it quickly levels off in a delightful cognitive thunderstorm.”
“I am stuck just part way on. There is some retinal activity with my eyes closed. Maybe I am a little light-headed, a little starry. Nothing much.”
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 9-14mg | 13-20mg | 18-30mg | 40mg+ |
Light
Common
Strong
Heavy
Sources
Oral
Dose ladder — dose.wikiOnset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Oral | 12-48 min | 18-60 min | 1.5-2.5 hrs | 1-2 hrs | 6-8 hrs |
Effect Profile
118 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Validated against 81 Erowid trip reports
- Weighted by importance: core (×3), major (×2), minor (×1)
Psychedelic
8.8
Intense+
9/10
Strong visuals, headspace, auditory effects, and body load
Visual Intensity
×3
10
internal hallucinations
autonomous entities
colour enhancement
drifting
synaesthesia
tracers
+9 more
Headspace Depth
×3
10
conceptual thinking
thought connectivity
feelings of interdependent opposites
subconscious communication
emotion enhancement
perspective alterations
+5 more
Auditory Effects
×1
10
auditory distortion
auditory enhancement
auditory hallucinations
auditory hallucination
synaesthesia
Body Load / Somatic Effects
×1
10
nausea
temperature regulation suppression
teeth grinding
Tolerance
Build-up
develops rapidly after a single use
Reset
7โ14 days for baseline
Tolerance Decay
Full tolerance
1h
Half tolerance
10d
Baseline
~14d
Acute tolerance: develops within a single session โ the reset numbers above apply after sustained heavy use, not after one binge. Within-session tachyphylaxis usually resets largely overnight.
Effects
Aggregated from 81 Erowid and 37 Bluelight experience reports
Each bar shows the share of analyzed reports whose text mentions that effect — a mention is not always a first-hand experience (fear of an effect, something witnessed, or "did not happen" count too). Tap or hover any number for details. The second value is the Bluelight extractor's per-effect confidence; a dash means the row is Erowid-derived, which has no confidence measurement.
Effect glossary — · full glossary
Positive Effects 77
67.8%
78%
56.7%
88%
50.0%
88%
41.5%
90%
37.8%
89%
36.4%
93%
33.1%
84%
27.1%
80%
27.1%
83%
27.0%
84%
27.0%
88%
26.2%
80%
22.9%
86%
22.9%
83%
21.6%
85%
21.6%
79%
21.6%
86%
21.6%
84%
18.9%
86%
16.2%
85%
Adverse Effects 54
43.2%
81%
40.5%
77%
Auditory Effects
37.3%
82%
33.0%
79%
32.2%
78%
25.4%
82%
22.0%
78%
18.6%
82%
16.2%
81%
16.2%
85%
16.2%
82%
14.4%
80%
12.7%
77%
11.9%
85%
11.9%
85%
11.0%
80%
10.8%
84%
10.8%
80%
10.8%
85%
9.9%
–
Combinations
Cross-Check 4-HO-MiPT with another substanceCommunity Trip Reports
Anecdotal first-person accounts from Reddit, Erowid, Bluelight, and Dose.wiki. Click a source to expand. Reports are harm-reduction context, not medical guidance. Tags summarise each author's own verdict — how reports are classified.
Erowid 8 reports 5 positive 2 neutral 1 cautionary visit
INTRODUCTION: SET & SETTING This was my first psychedelic experience in a long while, I believe it has been almost a year since I've actually tripped, full-blown, alone. I have several experiences with 4-HO-MiPT already under my belt.
The time is 9:09pm. I'm sitting in my half-way house in nyc, at the computer. I have some 4-ho-mipt in a capsule. I'm gonna swallow it now (I hope this is a good idea, Father, please bless this activity) 10pm- swallowed the pill (finally after some heavy contemplation) I just burped.
I had ordered 100mg 4-HO-MiPT from an online vendor with a view to tripping on Friday 13th; itยs just another date right? Of course! Anyway, on the Tuesday a package arrived and I opened it with eager anticipation: a fairly dense ยepoxy-like gooย (quote from MGS) which really could be used to attach the wings to a jet...
7:00pm (T-1:10) Iยm just waking up from a nap on a relaxing weekend evening at home. Must have dozed off there while listening to a Graham Hancock interview on a podcast, interesting research about ancient human culture, psychedelics and consciousness.
Who: J, male, aged 42, 73 inches (185 cm), 185 pounds (84 kg) What: 25 mg 4-HO-MIPT (Miprocin) as fumerate salt, a white crystalline powder When: 3:18 p.m. EDT 5 August 2012 (after a small, late lunch) Where: A hotel room somewhere near Cherry Hills, NJ How: (Route of administration) Fumerate powder wrapped in 1 ea 2-p...
[Erowid Note: Handling weapons while intoxicated or tripping is dangerous and irresponsible because it endangers other people. Don't do it!] This took place 3 days ago. College had let out and I had planned a camping trip at a remote pond. My two close friends V and P were to go.
This was my first time ever using a psychedelic drug. Iยve smoked weed and had spacecake before, even a bit of quality Dutch ecstasy, but never something that would dissolve me into a cosmic soup of atoms. The reason why I chose to do this was rather strange - let me explain.
Bluelight 3 threads 3 neutral visit
4-HO-MALT fumarate - 40mg over time - orally - first time Prior experience: I've sampled around forty classical and RC psychedelics, as well as sundry other drugs. Background: I probably have some tolerance from an oral 25mg 5-MeO-MET experience 6 days prior.
July 16, 2004 12mg of miprocin (4-Ho-MiPT, 4-hydroxy-N-methyl-N-isopropyltrypytamine hcl) Introduction: Winding Vines and I had planed a stay-at-home-and-make-love-all-night trip for some time. As the afternoon wound down, and daylight faded, we ruled out our original choice (2C-B) in favor of trying miprocin.
Did this first time while girlfriend watched me. did it in a hotel. watched Tv, listened to music... previous experience with this was 11 mgs mixed with 5-mapb. other experience: have done 5 mapb four times previous, abused ecstacy fifteen years ago bout thirty nights I didnt even know if was going to do it or not.
Dose.wiki 2 reports 1 positive 1 neutral visit
This was a really fun trip and unexpectedly clear-headed, with the fun kind of body disconnection that I enjoy during the visuals. In hindsight I wished the visuals lasted a bit longer but the empathogenic effects made up for it.
This trip had a very dark and sinister essence the entire time, and just very much reminded me of insects at various points. Something about the trip seemed to creep and crawl. Body load was relentless but was tolerable at points. There was just a lot ofโฆ
Bluelight Reference Guide
Tryptamines The Big & Dandy 4-HO-MiPT Thread - 2nd MiPteration
Welcome to the Big & Dandy 4-HO-MiPT (Miprocin) Thread (Part 2) >> to the previous thread << miprocin, 4-hydroxy-N-methyl-N-isopropyltryptamine wikipedia said: 4-HO-MiPT (miprocin, 4-hydroxy-N-methyl-N-isopropyltryptamine, hats) is a synthetic substituted aromatic compound and a lesser-known psychedelic tryptamine.
Read full thread on Bluelight โPiHKAL / TiHKAL
TiHKAL #22: 4-HO-MIPT
“I am stuck just part way on. There is some retinal activity with my eyes closed. Maybe I am a little light-headed, a little starry. Nothing much.”
4-HO-MiPT's nerd page
Pharmacology, chemical data, effect profiles, and more
→
Helpful Links
Import into PsychonautWiki Journal
The PsychonautWiki Journal app includes 4-HO-MiPT, but its built-in data can be thinner than ours. Importing this file adds a separate "4-HO-MiPT (Substance Search)" custom substance with our dose ranges, durations and tolerance, so you can log against whichever you prefer.
⬇ Download import file
Import this file as custom substances
and you get "4-HO-MiPT (Substance Search)" with every
route's full dose ladder and timeline, no typing. Works on iOS and
Android (v15+); the format is confirmed by the app's
developer.
Ranges are harm-reduction guidance, not a prescription.
Report an issue or suggest an edit
Spotted incorrect or dangerous information, have a correction, a new study, or a useful addition for 4-HO-MiPT? Let us know. Reports are reviewed by moderators — this is not posted publicly.