Before this trip I had only used 2C-B and LSD. Last experience was with LSD 5 months before. I wanted to remind me psychedelic thoughts, have fun and explore something new for me.
4-HO-EPT
Encyclopedic
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 5 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 19 combo interactions documented
- PubChem toxicity data
- classified Tentative
- classified Research-chemical
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 5 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 19 combo interactions documented
- PubChem toxicity data
- classified Tentative
- classified Research-chemical
Aliases: Eprocin
Summary
4-HO-EPT is a novel research chemical with very little history of human use before 2016 and almost no scientific research on its pharmacology, metabolism, or toxicity. Unlike more visual tryptamines, it primarily enhances colors with a neon quality rather than producing strong visual distortions. Users report a strong euphoric body high sometimes compared to opiates, with a generally light and positive mindset.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 15-20mg | 30-40mg | 40-60mg | 60mg+ |
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Oral | 30-60 min | 30-40 min | 1-2 hrs | 1-2 hrs | 4-8 hrs |
| Smoked | 1-4 min | 4-10 min | 15-30 min | 30-60 min | 4-8 hrs |
Effect Profile
8 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Psychedelic
8.1
Intense
8/10
Strong visuals and auditory effects with moderate headspace, mild body load
Visual Intensity
×3
10
color enhancement
tracers
drifting
pattern recognition enhancement
color shifting
depth perception distortions
+2 more
Headspace Depth
×3
7
conceptual thinking
emotion enhancement
thought loops
personal bias suppression
time distortion
Auditory Effects
×1
8
auditory distortion
auditory hallucination
Body Load / Somatic Effects
×1
4
nausea
increased heart rate
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 8 Erowid experience reports
Positive Effects 7
Euphoria
100.0%
70%
Color Enhancement
87.5%
70%
Music Enhancement
87.5%
70%
Body High
75.0%
70%
Stimulation
62.5%
70%
Introspection
50.0%
70%
Focus Enhancement
37.5%
70%
Adverse Effects 6
Confusion
50.0%
70%
Headache
50.0%
70%
Sweating
37.5%
70%
Muscle Tension
37.5%
70%
Anxiety
37.5%
70%
Nausea
37.5%
70%
Combinations
Cross-Check 4-HO-EPT 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 5 reports 1 positive 4 neutral visit
4-HO-EPT: Intense Energy, Calm Contemplation 11-27-2020 by Xorkoth 2:25pm (T+0:00) - I ingested 42mg orally at this point. It was a fine, chalky powder, like basically all of the 4-sub tryptamines are. Unlike the others, its taste is really surprising.
This was my fourth experience with 4-HO-EPT. I have to say, as much as I was looking forward to this trip, it was kind of a mixed bag, and probably more on the negative side.
This was my sixth experience with 4-HO-EPT. The experience as whole actually wasn't really that remarkable, and normally I probably wouldn't write a report about such a trip on half the maximum dose I have already written about before, but I did want to get this one out there due to the different perspective I took on...
The following is an experience report which details my first (as well as my partnerΒs first) experience taking 4-HO-EPT. Having tried other 4-substituted tryptamines including 4-HO-MPT, 4-HO-MiPT, and 4-AcO-MiPT, I was looking forward to adding this substance to my 4-sub repertoire.
Bluelight Reference Guide
β Official β The Big & Dandy 4-HO-EPT Thread
Welcome to the Big & Dandy 4-HO-EPT Thread! 4-hydroxy-N-ethyl-N-propyltryptamine There is almost no information available about the chemical as of this post so there's not much else to put here, but it has recently become widely available and thus deserves its own thread.
Read full thread on Bluelight β
4-HO-EPT's nerd page
Pharmacology, chemical data, effect profiles, and more
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Helpful Links
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