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    3-MeO-PCP molecular structure

    3-MeO-PCP Stats & Data

    3-meo 3meopcp
    PubChem
    MW273.4
    FormulaC18H27NO
    LogP3.6
    IUPAC1-[1-(3-methoxyphenyl)cyclohexyl]piperidine
    SMILESCOC1=CC=CC(=C1)C2(CCCCC2)N3CCCCC3
    InChIKeyBQQSZHHKGPOXLN-UHFFFAOYSA-N
    Chemical Class Arylcyclohexylamine
    Psychoactive Class Dissociative

    Interaction Warnings

    ⚠ psychedelics

    This combination is not advised because 3-MeO-PCP has been reported to cause extreme psychological disturbances such as psychosis and mania at a significantly higher rate than other dissociatives.

    ⚠ stimulants

    This combination is not advised because 3-MeO-PCP has been reported to cause extreme psychological disturbances such as psychosis and mania at a significantly higher rate than other dissociatives.

    Receptor Profile

    Receptor Actions

    Agonists
    Sigma-1 receptor agonist (Ki 42 nM)
    Antagonists
    NMDA receptor antagonist (Ki 20 nM)
    Inhibitors
    Serotonin reuptake inhibitor (SERT Ki 216 nM)

    Receptor Binding

    NMDA antagonist

    History & Culture

    1979–present

    3-MeO-PCP was first synthesized in 1979 by Geneste and colleagues during an investigation into phencyclidine derivatives. This work followed earlier research by Maddox et al. in 1965, which had produced the related compounds 2-MeO-PCP and 4-MeO-PCP as part of an exploration into potential central nervous system depressants. Following its synthesis, 3-MeO-PCP remained largely confined to occasional scientific research for approximately two decades. During this period, researchers such as Vignon et al. in 1982 conducted investigations into its pharmacological properties, but its activity in humans remained undocumented in the scientific literature.

    1999–present

    A chemist operating under the pseudonym John Q. Beagle provided the first documented description of 3-MeO-PCP's effects in humans in 1999. Posting on The Hive, an online drug chemistry forum, Beagle reported that the compound produced effects qualitatively similar to PCP with comparable potency. Despite this early report, the substance did not gain significant attention for another decade.

    2009–2015

    Discussion of 3-MeO-PCP began appearing on drug information forums around 2009, with one of the earliest reports coming from a user named 'hugo24' on Bluelight.org. By April 2011, online vendors including Buy Research Chemicals UK had begun selling the compound, and the number of available sources increased alongside a growing collection of user experience reports, many of which were positive in tone. Analysis of forum activity data from Drugs-Forum.com revealed that 3-MeO-PCP first appeared around 2011, reached peak discussion levels between 2011 and 2013, and had largely faded from active discussion by early 2016. The substance was first reported to the European Union's Early Warning System in March 2012 by the United Kingdom. Sweden's STRIDA project, which monitors suspected intoxications involving novel psychoactive substances, first detected 3-MeO-PCP in the fourth quarter of 2013. Fatalities associated with 3-MeO-PCP began appearing by the mid-2010s. In October 2014, the European Monitoring Centre for Drugs and Drug Addiction received notification of three deaths linked to the substance in Sweden, representing some of the earliest documented fatalities. These reports contributed to regulatory responses across multiple jurisdictions, with Sweden implementing controls in early 2015 and several other European countries following with scheduling measures throughout 2015 and subsequent years.

    Subjective Effects

    Physical
    • Increased heart rate
    • Tactile disconnection
    • Spontaneous tactile sensations
    • Tactile enhancement
    • Tactile suppression
    • Bodily control enhancement
    • Motor control loss
    • Stimulation: This drug is extremely stimulating in comparison to other dissociatives such as ketamine, MXE, or DCK.
    • Physical autonomy
    • Physical euphoria
    • Perception of decreased weight
    • Dizziness
    • Nausea
    Cognitive
    • Psychosis: This effect is more common on 3-MeO-PCP than other dissociatives (such as ketamine or MXE). It commonly occurs during the offset of the trip.
    • Mania: This effect is more common on 3-MeO-PCP than other dissociatives. It commonly occurs during the offset of the trip.
    • Mindfulness
    • Depersonalization
    • Derealization
    • Consciousness disconnection
    • Memory suppression
    • Ego death
    • Thought deceleration
    • Immersion enhancement
    • Information processing suppression
    • Time distortion
    • Euphoria
    • Introspection
    • Déjà vu
    • Conceptual thinking
    • Compulsive redosing
    • Anxiety suppression
    • Disinhibition
    • Amnesia
    • Feelings of impending doom
    • Creativity enhancement
    • Existential self-realization
    Sensory
    Auditory
    • Suppression
    • enhancement
    • Distortions
    • Hallucinations
    Visual · Distortions
    • Perspective distortions
    • Environmental cubism
    • Environmental orbism
    • Scenery slicing
    Visual · Enhancements
    • Colour enhancement
    • Acuity enhancement
    Visual · Hallucinatory States
    • Internal hallucinations: (autonomous entities; settings, sceneries, and landscapes; alterations in perspective and scenarios and plots)
    Visual · Suppressions
    • Visual disconnection: This eventually results in 3-MeO-PCP's equivalent of the famous "k-hole" or more specifically, holes, spaces and voids alongside of structures.
    • Visual acuity suppression
    • Double vision
    • Pattern recognition suppression
    • Frame rate suppression

    Forked from Subjective Effect Documentation work by Josie Kins, August 2016. Via dose.wiki (CC0).

    Toxicity

    PsychonautWiki

    The toxicity and long-term health effects of recreational 3-MeO-PCP use has not been studied in any scientific context and the exact toxic dosage is unknown. This is because 3-MeO-PCP has very short history of human usage. There is one death involving this substance recorded in the medical literature. In this case, the individual's cause of death was determined to be from a combination of 3-MeO-PCP, amphetamine, and diphenhydramine.

    Addiction & dependence

    3-MeO-PCP produces dependence with chronic use and has a high potential for abuse. In comparison to other dissociatives, 3-MeO-PCP has been reported to be more likely to produce psychological dependence than other dissociatives. When dependence has developed, cravings and withdrawal effects may occur if one suddenly stops their usage.

    Effect Profile

    Curated + 31 Reports
    Dissociative 7.1

    Strong dissociative depth and insight with strong mania and motor impairment

    Dissociative Depth×3
    105.1
    Mania / Compulsion×1
    10
    Insight / Novel Thought×2
    108.0
    Motor / Sensory Impairment×1
    101.3
    Catalog BlueLight

    Duration Timeline

    Bluelight
    Onset Comeup Peak Offset After Effects
    Oral
    30 minutes - 1.5 hours
    45 minutes - 2.0 hours
    2-3 hours
    1-2 hours
    4-48 hours
    Total: 3-5 hours
    Insufflated
    4-30 minutes
    45 minutes - 1.5 hours
    1.5-2 hours
    45 minutes - 1.0 hours
    4-48 hours
    Total: 2-4 hours
    Sublingual
    2-48 hours
    Smoked
    2-48 hours

    Community Effects

    TripSit
    Positive
    euphoria dissociation sedation
    Negative
    mania psychosis amnesia

    Tolerance & Pharmacokinetics

    drugs.wiki
    Half-Life
    Estimated several hours; reports commonly cite 4–8 h elimination half‑life with prolonged after‑effects.
    Addiction Potential
    Moderate to high psychological reinforcement; some users report compulsive redosing and mania with frequent or high‑dose use.

    Tolerance Decay

    Full tolerance 3d Half tolerance 7d Baseline ~14d

    Model reflects rapid tolerance build with frequent use and slow decay over weeks as commonly reported for arylcyclohexylamines; confidence is limited due to reliance on user reports rather than controlled studies.

    Cross-Tolerances

    Ketamine
    PCP
    Other arylcyclohexylamines (e.g., 3‑MeO‑PCE, 3‑HO‑PCP)

    Experience Report Analysis

    Erowid BlueLight
    47 Reports
    16 Single-substance
    2011–2021 Date Range
    46 With Age Data
    15 Effects Detected

    Demographics

    Gender Distribution

    Age Distribution

    Reports Over Time

    Effect Analysis

    Erowid + Bluelight

    Effects aggregated from 31 experience reports (16 single-substance Erowid + 15 Bluelight)

    31 Reports
    84 Effects Detected
    36 Positive
    31 Adverse
    17 Neutral

    Effect Sentiment Distribution

    Confidence Distribution

    Each bar is the share of reports mentioning the effect; its whisker, and the band on the rows below, is the 95% interval: where the share could plausibly be with other reports of the same kind.

    Rows resting on fewer than 20 reports show a count (“3 of 7”) instead of a bar. Why 20?

    Positive Effects 36

    Euphoria 42.0% (95% interval 26 to 59 percent) 86%
    Stimulation 41.9% (95% interval 26 to 59 percent) 80%
    Introspection 29.1% (95% interval 16 to 47 percent) 81%
    Music Enhancement 29.0% (95% interval 16 to 47 percent) 95%
    Color Enhancement 29.0% (95% interval 16 to 47 percent) 88%
    Tactile Enhancement 22.6% (95% interval 11 to 40 percent) 80%
    Focus Enhancement 12.9% (95% interval 5 to 29 percent) 80%
    Empathy 7 of 16 70%
    Joy 5 of 15 84%
    Contentment 4 of 15 81%
    Sociability Enhancement 4 of 15 81%
    Awe 3 of 15 75%
    Insight 3 of 15 85%
    Pain Relief 2 of 15 88%
    Peace 2 of 15 82%
    Closed-Eye Visuals 2 of 15 85%
    Visual Trails 1 of 15 85%
    Brightness Enhancement 1 of 15 85%
    Thought Connectivity 1 of 15 70%
    Drowsiness 1 of 15 75%

    Adverse Effects 31

    Anxiety 32.3% (95% interval 19 to 50 percent) 82%
    Motor Impairment 29.1% (95% interval 16 to 47 percent) 82%
    Confusion 6 of 15 82%
    Fear 4 of 15 88%
    Muscle Tension 3 of 16 70%
    Delusion 2 of 15 90%
    Panic 2 of 15 88%
    Insomnia 2 of 15 82%
    Communication Suppression 2 of 15 82%
    Restless Legs 1 of 15 90%
    Itching 1 of 15 85%
    Nystagmus 1 of 15 85%
    Paranoid Ideation 1 of 15 80%
    Entity Imagery 1 of 15 75%
    Ego Inflation 1 of 15 85%
    Cosmic Significance 1 of 15 75%
    Nightmares 1 of 15 95%
    Vomiting 1 of 15 85%
    Salivation 1 of 15 90%
    Vertigo 1 of 15 80%
    Show 11 more adverse effects
    Thought Deceleration 1 of 15 85%
    Paranoia 1 of 15 75%
    Frustration 1 of 15 85%
    Crying 1 of 15 85%
    Headache 1 of 15 85%
    Teeth Grinding 1 of 15 85%
    Tinnitus 1 of 15 85%
    Emotional Blunting 1 of 15 75%
    Dysphoria 1 of 15 85%
    Ataxia 1 of 15 80%
    Disorientation 1 of 15 80%
    Show 17 neutral or unclassified mentions
    Dissociation 51.6% (95% interval 35 to 68 percent)
    Visual Distortions 29.0% (95% interval 16 to 47 percent)
    Body Load 6 of 15
    Numbness 5 of 15
    Auditory Effects 5 of 16
    Dry Mouth 4 of 15
    Hospital 4 of 16
    Thought Disorganization 3 of 15
    Vivid Dreams 3 of 15
    Heaviness 2 of 15
    Time Dilation 2 of 15
    Depersonalization 2 of 15
    Thought Acceleration 2 of 15
    Emotional Lability 2 of 15
    Tremor 1 of 15
    Blurred Vision 1 of 15
    Muscle Twitching 1 of 15

    Also reported in combinations. In the 31 3-MeO-PCP reports where another drug was taken too, 5 (16.1%) mention hospital, emergency services or an overdose, 0 (0.0%) a seizure and 3 (9.7%) psychosis. In the 16 single-substance reports: 4, 0 and 0. These are not in the figures above: they cannot be put down to 3-MeO-PCP alone, and a mention is not always something that happened to the writer.

    Dosage Distribution

    Dose distribution from experience reports, one dose per report (the first listed). Doses above Q3 + 3×IQR, far above what people typically take, are left out of the median and range and listed under each route: most are real heavy doses or overdoses, not mistakes.

    Median: 11.0 mg IQR: 10.0–15.0 mg n=14

    1 report gave a dose above the typical range (119 mg), so it is not in the figures above. Listing a dose here does not mean it is safe.

    Show the report
    • 119 mg · another drug taken too

    Real-World Dose Distribution

    Erowid

    From 62 of 73 recorded dose entries: those that state a weight (mg, g or µg), in routes with at least five of them. Values above Q3 + 3×IQR, far above what people typically take, are left out; they can include real heavy doses and overdoses, not only mistakes.

    Insufflated (n=38)

    Median: 14.5mg 25th: 7.0mg 75th: 19.75mg 90th: 25.0mg

    Oral (n=12)

    Median: 8.0mg 25th: 6.0mg 75th: 10.0mg 90th: 10.0mg

    Sublingual (n=8)

    Median: 10.0mg 25th: 10.0mg 75th: 10.75mg 90th: 13.6mg

    Common Combinations

    Most co-occurring substances, as a share of all 47 reports filed under 3-MeO-PCP; whiskers are 95% intervals

    Form / Preparation

    Most common forms and preparations, as a share of the 41 reports that give one; whiskers are 95% intervals

    Body-Weight Dosing

    Dose per kg of body weight, one dose per report (the first listed), from reports giving a weight of 30–250 kg. Doses above Q3 + 3×IQR, far above what people typically take, are left out of the median and range and listed under each route.

    Sublingual

    Median: 0.179 mg/kg IQR: 0.157–0.182 mg/kg n=5

    Insufflated

    Median: 0.19 mg/kg IQR: 0.123–0.246 mg/kg n=14

    1 report gave a dose above the typical range (1.534 mg/kg), so it is not in the figures above. Listing a dose here does not mean it is safe.

    Show the report

    Oral

    Median: 0.118 mg/kg IQR: 0.09–0.165 mg/kg n=7

    1 report gave a dose above the typical range (1.9 mg/kg), so it is not in the figures above. It mentions hospital, emergency services or an overdose. Listing a dose here does not mean it is safe.

    Show the report
    • 1.9 mg/kg · mentions hospital, emergency services or an overdose

    Redose Patterns

    Redosing behavior across 43 reports

    34.9% (95% interval 22 to 50 percent) Redosed
    1.7 Avg Doses
    92m Median Interval

    Legal Status

    Country Status Notes
    Australia Prohibited (Schedule 9 analogue) Captured under broad drug analogue laws at both federal and state levels. As PCP is a Schedule 9 prohibited substance, 3-MeO-PCP is similarly prohibited as a structural analogue.
    Austria Illegal (NPSG) Controlled under the Neue-Psychoaktive-Substanzen-Gesetz (New Psychoactive Substances Act). Possession, production, and sale are prohibited.
    Brazil Controlled substance Added to Portaria SVS/MS nº 344 on May 17, 2018. Possession, distribution, and use are prohibited.
    Canada Schedule I (CDSA) Controlled under the Controlled Drugs and Substances Act as a PCP analogue. The CDSA places all PCP analogues, derivatives, and salts under Schedule I prohibition, making 3-MeO-PCP automatically banned despite not being mentioned by name.
    Chile Illegal Controlled under Ley 20000 (Ley de drogas). As an ether of PCP, 3-MeO-PCP falls under the prohibition of all PCP esters and ethers specified in Chilean drug law.
    Czech Republic Schedule I Became a scheduled substance effective October 1, 2015 under Government Decree no. 243/2015 Coll., which amended Government Regulation no. 463/2013 Coll.
    Denmark Illegal As of August 25, 2015, all MeO-PCP isomers including 3-MeO-PCP were added to the list of controlled substances.
    Germany Anlage II BtMG Added to Anlage II of the Betäubungsmittelgesetz on November 21, 2015. Production, sale, and possession are prohibited.
    Italy Schedule I Listed as a Schedule I controlled substance under Italian drug legislation. Possession, production, and distribution are prohibited.
    Netherlands Schedule I (Opiumwet) Listed as a Schedule I controlled substance under the Dutch Opium Act. Possession, production, and distribution are prohibited.
    Portugal Uncontrolled Not specifically controlled as 3-MeO-PCP is neither a salt nor an isomer of PCP under Portuguese drug legislation. Standard decriminalization policies for personal drug use may apply.
    Sweden Controlled substance The Swedish public health agency recommended classification as a hazardous substance on November 10, 2014. On January 16, 2015, 3-MeO-PCP was officially declared a controlled substance.
    Switzerland Controlled (Verzeichnis E) Specifically named as a controlled substance under Verzeichnis E of Swiss narcotics legislation.
    Turkey Illegal Classified as a controlled drug. Possession, production, supply, and importation are prohibited.
    United Kingdom Class B Controlled under the Misuse of Drugs Act 1971. Covered by the arylcyclohexylamine generic clause (S.I. 2013/239) which came into effect on February 26, 2013. This clause prohibits derivatives of 1-phenylcyclohexylamine where the amine has been replaced with a 1-piperidyl group and further substituted in the phenyl ring with an alkoxy substituent.
    United States Unscheduled (Federal Analogue Act applies) Not a federally scheduled substance. However, due to structural and pharmacological similarities to the Schedule II drug PCP, possession or distribution for human consumption could be prosecuted under the Federal Analogue Act. Virginia has specifically scheduled 3-MeO-PCP as a Schedule I substance under Code of Virginia 54.1-3446.

    Harm Reduction

    drugs.wiki

    3‑MeO‑PCP is active in the single‑milligram range; inaccurate scales can lead to large relative dosing errors, so volumetric dosing is strongly recommended. The dose–response curve is steep and onset can be delayed, making premature redosing a common cause of accidental over-intoxication. It is an NMDA receptor antagonist and has been described by TripSit as also exhibiting mild serotonin reuptake inhibition, so combinations with serotonergic substances warrant extra caution. Compared with ketamine, it can produce clearer stimulation but is also more likely to induce ambulatory delirium, disinhibition, and manic or psychotic states at strong doses. Erowid documents that at least one death has been associated with 3‑MeO‑PCP and warns of episodes where users cannot distinguish fantasy from reality, increasing risk of harm in uncontrolled environments. Avoid mixing with alcohol or benzodiazepines due to unpredictable sedation and accident risk; avoid driving or hazardous activities until the next day because after‑effects can persist up to 48 hours. People with a personal or family history of psychosis, bipolar disorder, or mania should avoid due to elevated risk of psychiatric destabilization. The RC market is prone to mislabeling and variable purity; reagent testing and conservative allergy tests reduce risk. Tolerance builds rapidly with frequent use; spacing sessions by multiple weeks reduces both tolerance and compulsive redosing patterns.

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