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    πŸ§ͺ This is a research chemical with limited data on its long-term health effects, toxicity profile, and safe dosage ranges.

    4-AcO-DET Encyclopedic
    Encyclopedic
    Typical encyclopedia coverage. Cross-reference for important decisions.
    • 6 corroborating sources
    • 1 ROA with full dose ladder
    • duration data present
    • 30 combo interactions documented
    • toxicity data (PsychonautWiki)
    • classified Tentative
    • classified Research-chemical

    Aliases: Ethacetin, Ethylacybin, 4-acetoxy-det

    Summary dose.wiki Erowid TripSit PsychonautWiki

    4-AcO-DET is a rare psychedelic tryptamine first synthesized by Albert Hofmann in 1958. It is believed to act as a prodrug for 4-HO-DET (ethocin). Effects are similar to psilocin, though some users report it being more stimulating and anxiety-inducing than other 4-substituted tryptamines.

    Perspectives

    “4-AcO-DET is a short trip. It’s less introspective and more … outrospective ? Is that a word? You find yourself hyperanalyzing everything, free of the mooring lines of emotions or your own ego / personality.”

    Dose Information source varies by route

    ROA Light Common Strong Heavy
    Oral 5-15mg 15-20mg 20-35mg 35mg+
    Smoked 5-10mg - - -
    Light Common Strong Heavy
    Sources

    Oral

    Dose ladder — dose.wiki

    Smoked

    Dose ladder — DrugsPRO

    Onset, Duration & After-effects dose.wiki TripSit PsychonautWiki

    ROA Onset Comeup Peak Offset After Effects Total
    Oral 19-60 min 60-90 min 1.5-3 hrs 1-2 hrs 2-4 hrs 3.82-7.5 hrs
    Smoked <1-2 min 4-10 min 10-19 min 19-40 min 30-60 min 34-71 min

    Effect Profile

    30 reports

    Scores (0–10) curated from multiple sources:

    • Effect keyword matching from PsychonautWiki catalog
    • Validated against 30 Erowid trip reports
    • Weighted by importance: core (×3), major (×2), minor (×1)

    Full methodology

    Psychedelic 8.8
    Intense+ 9/10

    Strong visuals, headspace, and auditory effects with strong body load

    Visual Intensity ×3
    10
    color enhancement tracers drifting visual enhancement pattern recognition enhancement color shifting +3 more
    Headspace Depth ×3
    10
    conceptual thinking thought connectivity emotion enhancement personal bias suppression time distortion
    Auditory Effects ×1
    10
    auditory distortion auditory hallucination
    ⚠ Body Load / Somatic Effects ×1
    10
    nausea bodily pressures teeth grinding

    Tolerance

    Build-up develops rapidly after a single use
    Reset 7–14 days for baseline

    Tolerance Decay

    Full tolerance 6h Half tolerance 7d Baseline ~14d

    Estimates inferred from classical psychedelic patterns (psilocybin/LSD) and user reports; quality anecdotal. Avoid redosing to chase effects during the same session due to tolerance spikes and unpredictability.

    Cross-Tolerances

    Psilocybin/Psilocin (4-HO-DMT)
    LSD
    Other 4-substituted tryptamines (e.g., 4-HO/4-AcO-MET/MiPT)

    Effects Erowid

    Aggregated from 30 single-substance Erowid experience reports; 20 Erowid reports where another drug was taken too are left out

    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 or something witnessed can count). Mentions saying the effect did not happen are left out; that check reads keywords, so it can miss some. The shaded band on a bar, and the small range after its number, is the 95% interval: where the share could plausibly be with other reports of the same kind. Fewer reports, wider band. 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.

    Positive Effects 12

    76.7% (95% interval 59 to 88 percent) –
    56.7% (95% interval 39 to 73 percent) –
    53.3% (95% interval 36 to 70 percent) –
    40.0% (95% interval 25 to 58 percent) –
    36.7% (95% interval 22 to 54 percent) –
    36.7% (95% interval 22 to 54 percent) –
    33.3% (95% interval 19 to 51 percent) –
    30.0% (95% interval 17 to 48 percent) –
    30.0% (95% interval 17 to 48 percent) –
    23.3% (95% interval 12 to 41 percent) –
    23.3% (95% interval 12 to 41 percent) –
    10.0% (95% interval 4 to 26 percent) –

    Adverse Effects 5

    36.7% (95% interval 22 to 54 percent) –
    30.0% (95% interval 17 to 48 percent) –
    26.7% (95% interval 14 to 44 percent) –
    20.0% (95% interval 10 to 37 percent) –
    10.0% (95% interval 4 to 26 percent) –

    Also reported in combinations. In the 20 4-AcO-DET reports where another drug was taken too, 0 (0.0%) mention hospital, emergency services or an overdose, 0 (0.0%) a seizure and 1 (5.0%) psychosis. In the 30 single-substance reports: 0.0%, 0.0% and 0.0%. These are not in the figures above: they cannot be put down to 4-AcO-DET alone, and a mention is not always something that happened to the writer.

    Combinations

    Cross-Check 4-AcO-DET with another substance

    Community 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 6 positive 1 neutral 1 cautionary visit
    Always Label Your Stuff!! cautionary exp #113134

    At the time of this experience I was dabbling with LSD quite a bit during the prior 3 months. Although I kinda got tired of LSD as the lengthy duration and I feel that I can never go as deep as I can with psychedelic tryptamines. Therefore I decided that I would order a 1 gram of 4ACO DET from a trusted vendor.

    Crombuella · 4-ACO-DET · oral / smoked
    Beautiful and Clear positive exp #11723

    This was my second time on 4-AcO-DET and only a few days since my last trip. Last time I noticed a strong spiritual component to the drug which I wasn't really prepared to make use of. This time, I decided that I would get the most of that. A couple hours before I took it, I spent some time doing some magic.

    Maison · 4-Acetoxy-DET · 35 mg insufflated / 12 mg insufflated
    A Wonderful Ally positive exp #11661

    I have taken 4-AcO-DET twice now. Both times were quite a contrasting experience. The first time I decided to ingest a 7.5 mg dose to get a feeling for the substance, the second time I decided to jump up to 15 mg. The feeling experience is one a exuberance and grandeur. I find to be almost sexual in nature.

    Leprechaun · 4-Acetoxy-DET · 7.5 mg oral
    Pain of The World neutral exp #21144

    February 7th, 2003 This week my roommate left the country for a family emergency, so my partner and I figured we should take advantage of the empty house to evaluate a very rare and obscure psychedelic I recently managed to acquire.

    Morninggloryseed · 4-Acetoxy-DET
    The Impartial Messenger positive exp #110709

    When I first began to investigate psychedelic research chemicals, I rather quickly filed away 4-HO-DET and its acetate ester into a lesser category of drugs, perhaps something of interest only to the most dedicated psychonauts or molecule collectors.

    TheAppleCore · 8 mg oral / 4 mg oral / 16 mg oral
    Movie Experience positive exp #34266

    I was in a good mood, and I haven't tried to connect with psychedelics for about eight months, nor have I done anything at all in five months. I feel very convinced that I got a strong psyche, and that I was well prepared of entering the psychedelic world again.

    Shamanix · 4-Acetoxy-DET · 20 mg oral / 10 mg oral
    Pleasant But Unexciting positive exp #14968

    Background: I've done a number of other psychedelics -- LSD, shrooms, 5-MEO-DIPT (foxy), 5-MEO-DMT, 2-CT-7, ketamine as well as most other recreational drugs. I am female, weigh about 115 lbs, and have a fast metabolism. This was my first time trying 4-AcO-DET.

    fairnymph · 4-AcO-DET (IV) · 12 mg IV
    Mathematical Bliss positive exp #32428

    My bottle of 4-aco-DET is almost gone. All the stuff is on the walls of the bottle and stuck to the bottom. It looks yellow. So I said fuck it. I used water to wash it out and I dumped it in orange juice. And as I am about to do what I just typed above I will be back when I am tripping. Lets see what happens.

    Joe · 4-Acetoxy-DET
    Dose.wiki 5 reports 5 neutral visit
    First experiment with 4-AcO-DET 28mg oral neutral

    I really like this substance! I'll have to try it more to develop a nuanced opinion of it. However, I have 250mg of it so going forward I intend to try increasingly high dosages while documenting its effects.

    by Anonymous
    First impressions of 4-AcO-DET 25mg oral neutral

    I'm feeling incredibly euphoric afterwards and am left with great impressions. I'm really looking forward to higher dose trips on this drug in the future.

    by BluuRae
    My second experience with 4-AcO-DET 40 mg oral neutral

    Nothing particularly remarkable happened during this trip, but I have found 4-AcO-DET to be one of my favourite tryptamines so far. I intend to take 60mg next time I trip and I suspect that will result in sub ego-death level effects.

    by Anonymous
    My skin didn't look like this before 42 mg oral neutral

    I really enjoy this drug. The only thing I find strange is the shaking sensation that keeps getting reported. The high feels incredibly similar to shrooms in the way that some of my visual distortions both OEV and CEV appear fluid and colourful, almost like…

    by BluuRae
    Shaking a Lot 20 mg oral in solution neutral

    4-AcO-DET is a short trip. It’s less introspective and more … outrospective ? Is that a word? You find yourself hyperanalyzing everything, free of the mooring lines of emotions or your own ego / personality. It is a very neutral drug. The bodyload was heavy,…

    by nervewing

    Bluelight Reference Guide Bluelight

    Tryptamines The Big & Dandy 4-AcO-DET Thread

    i've been researching 4 ACO DET and was just wondering if anybody else has any experience? is it that much like shrooms as alot of reports portray?

    Read full thread on Bluelight β†’
    →

    Helpful Links

    Add missing routes to PsychonautWiki Journal

    The PsychonautWiki Journal app already has 4-AcO-DET, but its built-in entry only covers Oral. Here are the other routes we have data for. You can't edit a built-in substance, but you can add a Custom Unit for any of these routes to log it.

    ⬇ Download import file Import this file as custom substances and you get "4-AcO-DET (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. The manual values below work for older versions.
    Dose & duration (reference)
    4-AcO-DET: routes the PsychonautWiki Journal app is missing
    Source: SubstanceSearch (substancesearch.com)
    
    Smoked dose (mg): light 5-10
    
    Smoked duration: onset <1-2m Β· come-up 4-10m Β· peak 10-19m Β· offset 19-40m Β· total 0.56-1.19h Β· after-effects 0.5-1h
    
    Note: ranges are harm-reduction guidance, not a prescription. Start low, go slow, and test your substances.

    Ranges are harm-reduction guidance, not a prescription.