Dosage: 30 mg oral in gel cap Setting: My apartment T0:00- Dose measured out and taken. Powder has an odor reminiscent of acetic acid. T0:15- Onset. Simultaneously a mental and physical sense of uneasiness. T0:40- The uneasiness builds.
4-AcO-MiPT
Encyclopedic
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 6 corroborating sources
- 2 ROAs with full dose ladders
- duration data present
- 19 combo interactions documented
- PubChem toxicity data
- classified Tentative
- classified Research-chemical
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 6 corroborating sources
- 2 ROAs with full dose ladders
- duration data present
- 19 combo interactions documented
- PubChem toxicity data
- classified Tentative
- classified Research-chemical
Aliases: Mipracetin, O-acetylmiprocin, 4acomipt
Summary
4-AcO-MiPT is a synthetic psychedelic tryptamine that remains relatively uncommon with limited history of human use. The substance is hygroscopic and degrades quickly when exposed to moisture or improper storage; it should be kept in an inert atmosphere in a freezer. The material can develop a sticky, goop-like consistency when exposed to air.
Perspectives
“This may now take the throne as my new favorite psychedelic. The headspace is nothing short of delightfulβit's whimsical, empathogenic, and feels overall like a pleasant dream.”
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 10-15mg | 15-20mg | 20-35mg | 35mg+ |
| Vapourized | 2-5mg | 5-10mg | 10-15mg | 15mg+ |
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset |
|---|---|---|---|---|
| Oral | 19-60 min | 1-2 hrs | 1.5-3 hrs | 1-2 hrs |
| Vapourized | 1 min | - | 1-2 hrs | - |
Effect Profile
3 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Psychedelic
9.8
Extreme
10/10
Strong visuals, headspace, and auditory effects with low body load
Visual Intensity
×3
10
colour enhancement
drifting
tracers
synaesthesia
pattern recognition enhancement
colour shifting
+4 more
Headspace Depth
×3
10
conceptual thinking
thought connectivity
emotion enhancement
perspective distortions
thought loops
personal bias suppression
+1 more
Auditory Effects
×1
10
auditory distortion
auditory hallucination
synaesthesia
Body Load / Somatic Effects
×1
2
nausea
Empathogen
2.7
Light+
3/10
Strong sensory enhancement with mild stimulation, low euphoria
Empathy / Social Openness
×3
0
Euphoria / Mood Elevation
×2
2
emotion enhancement
Stimulation
×1
5
stimulation
wakefulness
Sensory Enhancement
×1
10
spontaneous tactile sensations
colour enhancement
visual acuity enhancement
Based on reports from:
Tolerance
Build-up
develops rapidly after a single use
Reset
7β14 days for baseline
Tolerance Decay
Full tolerance
1h
Half tolerance
10d
Baseline
~14d
Acute tolerance: develops within a single session β the reset numbers above apply after sustained heavy use, not after one binge. Within-session tachyphylaxis usually resets largely overnight.
Effects
Aggregated from 3 Erowid experience reports
Positive Effects 2
Euphoria
100.0%
70%
Music Enhancement
100.0%
70%
Adverse Effects 0
Combinations
Cross-Check 4-AcO-MiPT with another substanceTrip Reports
Community Trip Reports
Anecdotal first-person accounts from Reddit, Erowid, and Bluelight. Click a source to expand. Reports are harm-reduction context, not medical guidance.
Erowid 3 reports 3 neutral visit
An Ecstatic Microdose Experience Date Β 1/24/19 Compound: 4-AcO-MiPT, sourced from a reputable vendor and consumed with one 12oz beer. Set/setting: dosed 2mg to get a taste for a microdose of the drug, as well as to allergy test the compound. In my apartment by myself.
I had obtained a 100mg sample of 4-Aco-MiPT. The setting was a friends house near a forest and a park. My mind was clear and i had no worries. I took 25mg. T+30min: Im starting to feel something. It feels very friendly and happy. The vibrations/energy felt good.
Bluelight 1 thread 1 neutral visit
This is the first and possibly last time i've ever done this trip report thing. To be honest i haven't done it before because non of these rcs' have really "moved me to", if you catch my drift. Well last night this changed. So it goes like this i think 22.15 me and the missus takes a cap of miprocetyl(sp?) 16mg each.
Bluelight Reference Guide
β Official β The Big & Dandy 4-AcO-MiPT Thread
I can't find ANY reports on this compound outside of Tihkal. The only information I am able to find about it is in the Tihkal entry for 4-HO-MiPT. ....they both seem promising, but I'd like to hear some first hand accounts, as Shulgin focuses on 4-HO-MiPT, and doesn't go into much detail on the 4-AcO.
Read full thread on Bluelight β
4-AcO-MiPT's nerd page
Pharmacology, chemical data, effect profiles, and more
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