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    Disclaimer
    ⚠ PCP and its analogues are potent dissociatives with significant risk of psychosis, violent behavior, and overdose. Effects are highly unpredictable and dose-sensitive.
    🧪 This is a research chemical with limited data on its long-term health effects, toxicity profile, and safe dosage ranges.

    4-MeO-PCP

    Aliases: Methoxydine, 4-methoxy-pcp, 4meopcp

    Dissociative Psychedelic Research-chemical

    Summary TheDrug.Wiki Erowid TripSit PsychonautWiki

    4-MeO-PCP is a long-acting dissociative with approximately 70% the potency of PCP. Users have reported substantial differences in active dose; these discrepancies may be partially explained by the presence of unreacted PCC and other impurities in samples sold on the grey market. Use a precise milligram scale for dosing.

    Dose Information TheDrug.Wiki TripSit PsychonautWiki

    ROA Light Common Strong Heavy
    Oral 75-100mg 100-170mg 170-250mg 250mg+
    Insufflated 30-75mg 75-150mg 100mg 150mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects TheDrug.Wiki TripSit PsychonautWiki

    ROA Onset Comeup Peak Offset After Effects Total
    Oral 0.75-2 hrs 30-90 min 3-7 hrs 6-10 hrs 6-6 hrs 12-20 hrs
    Insufflated 4-15 min 15-30 min 3-6 hrs 3-3 hrs 3-3 hrs 12-18 hrs

    Effect Profile

    7 reports

    Scores (1–10) curated from multiple sources:

    • Effect keyword matching from PsychonautWiki catalog
    • Weighted by importance: core (×3), major (×2), minor (×1)

    Full methodology

    Psychedelic 6.5
    Strong 6/10

    Strong auditory effects with moderate visuals, mild headspace, low body load

    Visual Intensity ×3
    7
    internal hallucinations scenery slicing environmental cubism environmental orbism
    Headspace Depth ×3
    5
    conceptual thinking introspection time distortion
    Auditory Effects ×1
    8
    auditory distortion auditory hallucination
    ⚠ Body Load / Somatic Effects ×1
    2
    nausea
    Dissociative 6.6
    Strong+ 7/10

    Strong dissociative depth, mania, motor impairment, and insight

    Dissociative Depth ×3
    10
    consciousness disconnection depersonalization derealization physical disconnection cognitive disconnection visual disconnection +5 more
    ⚠ Mania / Compulsion ×1
    10
    mania compulsive redosing disinhibition stimulation
    Insight / Novel Thought ×2
    8
    conceptual thinking introspection creativity enhancement immersion enhancement
    ⚠ Motor / Sensory Impairment ×1
    10
    motor control loss physical disconnection tactile suppression numbness spatial disorientation visual disconnection +1 more
    Based on reports from:
    Bluelight Big & Dandy Thread Erowid Experience Reports PsychonautWiki 4-MeO-PCP
    View methodology →

    Tolerance

    Build-up develops with repeated use over days to weeks
    Reset 2–4 weeks for noticeable reduction

    Tolerance Decay

    Full tolerance 1d Half tolerance 21d Baseline ~28d

    Effects Erowid

    Aggregated from 7 Erowid experience reports

    Positive Effects 2

    Euphoria 57.1% 70%
    Focus Enhancement 42.9% 70%

    Adverse Effects 1

    Confusion 71.4% 70%

    Combinations TripSit

    4-MeO-PCP's nerd page Pharmacology, chemical data, effect profiles, and more
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    Helpful Links

    📘 Experience Reports 📖 TheDrug.Wiki 📖 PsychonautWiki 📖 Bluelight