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    Methoxetamine molecular structure

    Methoxetamine Stats & Data

    Mxe Mexxy M-ket Roflcopter 3-meo-2'oxo-pce
    NPS DataHub
    MW247.34
    FormulaC15H21NO2
    CAS1239943-76-0
    IUPAC(''R''/''S'')-2-(3-Methoxyphenyl)-2-(ethylamino)cyclohexanone
    SMILESCCNC1(CCCCC1=O)c1cccc(OC)c1
    InChIKeyLPKTWLVEGBNOOX-UHFFFAOYSA-N
    Arylcyclohexylamines; 2021/6. Von Arylcyclohexylamin abgeleitete Verbindungen; 2022/6. Von Arylcyclohexylamin abgeleitete Verbindungen
    Psychoactive Class Dissociative
    Half-Life ~3–6 h (felt effects may outlast plasma due to active metabolites)

    Receptor Profile

    Receptor Actions

    Antagonists
    NMDA receptor antagonist (noncompetitive)
    Inhibitors
    Serotonin reuptake inhibitor

    Receptor Binding

    NMDA antagonist

    History & Culture

    Methoxetamine represents a deliberate exercise in rational drug design rather than accidental discovery. The compound was conceived by an anonymous chemist who sought to create a ketamine analogue with improved therapeutic properties. Structurally, MXE incorporates features from both ketamine and phencyclidine, sharing particular resemblance to 3-MeO-PCP while maintaining ketamine's core arylcyclohexylamine scaffold. The design philosophy behind MXE centered on two primary objectives: enhancing the antidepressant potential observed with ketamine while minimizing the urological toxicity associated with chronic ketamine use. The reasoning held that a more potent compound would require lower doses, thereby reducing the accumulation of bladder-toxic metabolites linked to ketamine-associated cystitis. The compound was also reportedly developed with potential applications for phantom limb syndrome in mind.

    2010–2011

    The qualitative effects of MXE were first documented on online drug forums in May 2010, with small-scale commercial availability following by September of that year. The compound's rapid proliferation drew the attention of European drug monitoring agencies; by November 2010, the European Monitoring Centre for Drugs and Drug Addiction had formally identified the substance as an emerging novel psychoactive compound. Growth in the MXE market proved substantial over the following months. By July 2011, the EMCDDA had catalogued 58 separate websites offering the compound, typically at prices ranging from 145 to 195 euros for ten grams. The substance was distributed almost exclusively through online research chemical vendors rather than traditional street-level markets, positioning it firmly within the then-emerging novel psychoactive substances economy.

    2012–present

    MXE developed a substantial following within psychonaut and electronic music communities during its period of availability. The dance music press documented the compound's penetration into club culture, with Mixmag reporting in January 2012 that users had coined the slang term "roflcoptr" for the substance. UK Home Office press releases subsequently referred to the drug as "mexxy," terminology that mainstream media would adopt. The compound acquired what many users describe as a cult status, valued for a distinctive quality frequently characterized as "magic"—combining pronounced euphoria, depth of introspection, and remarkable versatility across dosage ranges. Users praised its psychedelic character relative to other dissociatives and its suitability for both social settings and solitary exploration at higher doses. However, regulatory action—particularly production bans in China, which had served as the primary manufacturing source—severely disrupted global supply. The compound became progressively more difficult to obtain, and by the mid-2010s was largely considered extinct from the research chemical marketplace. Contemporary discussions of MXE among former users often carry a tone of nostalgia, with one commentator noting that people speak of the substance in terms typically reserved for a departed lover or a prize catch that somehow escaped.

    Subjective Effect Notes

    cognitive: The general head space of MXE is often described as particularly euphoric and clear headed in comparison to that of DXM and Ketamine.

    Effect Profile

    Curated + 219 Reports
    Dissociative 6.6

    Strong dissociative depth and insight with moderate mania and motor impairment

    Dissociative Depth×3
    89.1 5/21
    Mania / Compulsion×1
    73.8 3/21
    Insight / Novel Thought×2
    80.9 3/21
    Motor / Sensory Impairment×1
    76.6 1/21
    Catalog Erowid

    User Experiences

    Dissociative Depth "It made all my problems wash away, you could say that I dissociated from them… I was heartbroken as hell, but that suddenly became a passing feeling, an irrelevancy to the wide world of MXE." Effect Index
    Insight "That's where it gets really interesting, and I am incorporating different pre-existing models of consciousness such as The Quantum Mind, Spin-Mediated Consciousness, Orch OR theory, quantum..." Bluelight
    Mania "To me, I've already Died in the Hospital from a Heroin OD and they brought me back to Life - I've tried to take my Life during Manic Depressive Episodes................MXE has saved me from this..." Bluelight

    Duration Timeline

    Bluelight
    Onset Comeup Peak Offset After Effects
    Oral / Sublingual
    15-45 minutes
    45 minutes - 1.5 hours
    1-3 hours
    2-3 hours
    2-48 hours
    Total: 3-5 hours
    Insufflated
    4-19 minutes
    30 minutes - 1.25 hours
    1-3 hours
    1-3 hours
    2-48 hours
    Total: 3-6 hours
    Intramuscular
    4-10 minutes
    15-30 minutes
    1-3 hours
    2-3 hours
    2-48 hours
    Total: 3-6 hours
    Rectal
    15-30 minutes
    30 minutes - 1.0 hours
    1-3 hours
    2-3 hours
    2-48 hours
    Total: 3-6 hours
    Oral
    12-30 minutes
    48 minutes - 1.5 hours
    1.5-2.5 hours
    1-1.5 hours
    6-48 hours
    Total: 3-6 hours
    Sublingual
    15-45 minutes
    3.0-6.0 hours
    2.0-48.0 hours
    Total: 3-6 hours

    Community Effects

    TripSit
    Positive
    euphoria dissociation sociability relaxation hole analgesia music enhancement
    Negative
    nausea confusion mania addiction bladder damage amnesia

    Tolerance & Pharmacokinetics

    drugs.wiki
    Half-Life
    ~3–6 h (felt effects may outlast plasma due to active metabolites)
    Addiction Potential
    Moderate to high: many users report a strong urge to redose (“more-ish”), rapid tolerance, and binge patterns when supply is available.

    Tolerance Decay

    Full tolerance 0h Half tolerance 3d Baseline ~10d

    A single heavy session can produce pronounced short-term tolerance. Many users report tolerance halves over ~3–5 days and returns near-baseline after ~10–14 days; data are anecdotal and vary widely by dose pattern and ROA. Cross-tolerance within the arylcyclohexylamine class is expected. Data quality: anecdotal/community reports.

    Cross-Tolerances

    Ketamine
    60% ●○○
    Other arylcyclohexylamines (e.g., O-PCE, 3-MeO-PCP)
    50% ●○○

    Experience Report Analysis

    Erowid
    219 Reports
    2007–2024 Date Range
    207 With Age Data
    32 Effects Detected

    Demographics

    Gender Distribution

    Age Distribution

    Reports Over Time

    Effect Analysis

    Erowid

    Effects aggregated from 219 experience reports (219 Erowid)

    219 Reports
    32 Effects Detected
    11 Positive
    12 Adverse
    9 Neutral

    Effect Sentiment Distribution

    Confidence Distribution

    Positive Effects 11

    Music Enhancement 52.1% 70%
    Euphoria 43.8% 70%
    Color Enhancement 38.4% 70%
    Empathy 35.6% 70%
    Stimulation 33.8% 70%
    Tactile Enhancement 28.3% 70%
    Focus Enhancement 26.5% 70%
    Introspection 21.0% 70%
    Body High 15.5% 70%
    Pain Relief 7.3% 70%
    Creativity Enhancement 5.9% 70%

    Adverse Effects 12

    Anxiety 45.7% 70%
    Confusion 41.6% 70%
    Motor Impairment 20.5% 70%
    Nausea 18.7% 70%
    Memory Suppression 15.5% 70%
    Increased Heart Rate 8.2% 70%
    Headache 7.3% 70%
    Psychosis 7.3% 70%
    Pupil Dilation 4.1% 70%
    Thought Loops 4.1% 70%
    Muscle Tension 3.7% 70%
    Sweating 3.2% 70%

    Dose-Response Correlation

    How effect frequency changes across dose levels

    Insufflated

    View data table
    Effect Common (n=16) Strong (n=18) Heavy (n=15)
    Visual Distortions 50.0% 66.7% 73.3%
    Color Enhancement 50.0% 66.7% 53.3%
    Dissociation 37.5% 61.1% 60.0%
    Confusion 37.5% 38.9% 60.0%
    Music Enhancement 56.2% 50.0% 46.7%
    Stimulation 31.2% 55.6% 40.0%
    Euphoria 50.0% 44.4% 46.7%
    Tactile Enhancement 25.0% 50.0% 20.0%
    Empathy 18.8% 44.4% 46.7%
    Focus Enhancement 25.0% 38.9% 40.0%
    Anxiety 31.2% 33.3% 26.7%
    Motor Impairment 31.2% 16.7% 33.3%
    Closed-Eye Visuals 12.5% 33.3% 33.3%
    Nausea 12.5% 33.3% 0%
    Auditory Effects 12.5% 33.3% 26.7%

    Oral

    View data table
    Effect Strong (n=11)
    Music Enhancement 81.8%
    Anxiety 72.7%
    Visual Distortions 54.5%
    Confusion 54.5%
    Closed-Eye Visuals 36.4%
    Color Enhancement 36.4%
    Empathy 36.4%
    Focus Enhancement 27.3%
    Headache 27.3%
    Dissociation 27.3%
    Hospital 27.3%
    Introspection 18.2%
    Open-Eye Visuals 18.2%
    Euphoria 18.2%
    Time Distortion 18.2%

    Subjective Effect Ontology

    Experience Reports

    Structured effect tags extracted from 219 experience reports using a controlled vocabulary of 220+ canonical effects across 15 domains.

    Auditory

    music enhancement 114 52.1%

    Emotional

    anxiety 100 45.7%

    Selfhood

    dissociation 120 54.8%

    Visual

    visual distortions 120 54.8%

    4 unique effects extracted · Derived from experience reports

    Dose–Effect Mapping

    Experience Reports

    How reported effects shift across dose tiers, based on 219 experience reports.

    Insufflated dose range: 20.0–50.0 mg (median 40.0 mg)
    Effect Common (n=16) Strong (n=18) Heavy (n=15)
    visual distortions
    50%
    67%
    73%
    color enhancement
    50%
    67%
    53%
    dissociation
    38%
    61%
    60%
    confusion
    38%
    39%
    60%
    music enhancement
    56%
    50%
    47%
    stimulation
    31%
    56%
    40%
    euphoria
    50%
    44%
    47%
    tactile enhancement
    25%
    50%
    20%
    empathy
    19%
    44%
    47%
    focus enhancement
    25%
    39%
    40%
    anxiety
    31%
    33%
    27%
    motor impairment
    31%
    17%
    33%
    closed-eye visuals
    12%
    33%
    33%
    nausea
    12%
    33%
    auditory effects
    12%
    33%
    27%
    introspection
    31%
    11%
    13%
    sedation
    19%
    22%
    20%
    body high
    17%
    20%
    open-eye visuals
    20%
    jaw clenching
    19%

    Showing top 20 of 26 effects

    Oral dose range: 30.0–55.0 mg (median 50.0 mg)
    Effect Strong (n=11)
    music enhancement
    82%
    anxiety
    73%
    visual distortions
    54%
    confusion
    54%
    closed-eye visuals
    36%
    color enhancement
    36%
    empathy
    36%
    focus enhancement
    27%
    headache
    27%
    dissociation
    27%
    hospital
    27%
    introspection
    18%
    open-eye visuals
    18%
    euphoria
    18%
    time distortion
    18%
    body high
    18%
    stimulation
    18%
    motor impairment
    18%
    sedation
    18%
    auditory effects
    18%

    Showing top 20 of 21 effects

    Risk Escalation

    Sentiment Analysis

    Average frequency of positive vs adverse effects across dose tiers (Insufflated)

    Common n=16
    8 positive 35.9% 6 adverse 23.9%
    Strong n=18
    11 positive 36.9% 5 adverse 27.8%
    Heavy n=15
    9 positive 36.3% 4 adverse 33.3%
    View effect breakdown

    Adverse Effects

    Effect Common (n=16) Strong (n=18) Heavy (n=15) Change
    Confusion
    38%
    39%
    60%
    +60%
    Anxiety
    31%
    33%
    27%
    -14%
    Motor Impairment
    31%
    17%
    33%
    6%
    Nausea
    12%
    33%
    +166%
    Jaw Clenching
    19%
    0%
    Memory Suppression
    17%
    13%
    -20%
    Headache
    12%
    0%

    Positive Effects

    Effect Common (n=16) Strong (n=18) Heavy (n=15) Change
    Color Enhancement
    50%
    67%
    53%
    6%
    Music Enhancement
    56%
    50%
    47%
    -16%
    Stimulation
    31%
    56%
    40%
    +28%
    Euphoria
    50%
    44%
    47%
    -6%
    Tactile Enhancement
    25%
    50%
    20%
    -20%
    Empathy
    19%
    44%
    47%
    +148%
    Focus Enhancement
    25%
    39%
    40%
    +60%
    Introspection
    31%
    11%
    13%
    -57%
    Body High
    17%
    20%
    +19%
    Pain Relief
    17%
    0%
    Creativity Enhancement
    11%
    0%

    Dosage Distribution

    Dose distribution from experience reports

    Insufflated

    Median: 40.0 mg IQR: 20.0–50.0 mg n=62

    Oral

    Median: 50.0 mg IQR: 30.0–55.0 mg n=29

    Sublingual

    Median: 50.0 mg IQR: 25.0–65.0 mg n=17

    Real-World Dose Distribution

    62K Doses

    From 303 individual dose entries

    Insufflated (n=160)

    Median: 25.5mg 25th: 15.75mg 75th: 50.0mg 90th: 75.5mg
    mg/kg median: 0.424 mg/kg 75th: 0.76

    Oral (n=52)

    Median: 35.0mg 25th: 20.0mg 75th: 50.0mg 90th: 59.5mg
    mg/kg median: 0.473 mg/kg 75th: 0.69

    Intramuscular (n=18)

    Median: 21.5mg 25th: 20.0mg 75th: 31.5mg 90th: 43.0mg
    mg/kg median: 0.351 mg/kg 75th: 0.543

    Rectal (n=8)

    Median: 42.5mg 25th: 22.75mg 75th: 106.25mg 90th: 147.5mg
    mg/kg median: 1.343 mg/kg 75th: 1.936

    Sublingual (n=25)

    Median: 50.0mg 25th: 20.0mg 75th: 60.0mg 90th: 83.0mg
    mg/kg median: 0.641 mg/kg 75th: 0.908

    Common Combinations

    Most co-occurring substances in experience reports

    Form / Preparation

    Most common forms and preparations reported

    Body-Weight Dosing

    Dose relative to body weight from reports with weight data

    Insufflated

    Median: 0.529 mg/kg IQR: 0.29–0.882 mg/kg n=57

    Oral

    Median: 0.559 mg/kg IQR: 0.294–0.764 mg/kg n=27

    Sublingual

    Median: 0.735 mg/kg IQR: 0.339–0.912 mg/kg n=17

    Redose Patterns

    Redosing behavior across 165 reports

    39.4% Redosed
    1.7 Avg Doses
    65m Median Interval

    Legal Status

    European Council Decision (September 2014) requiring Member States to implement control measures by October 2015
    Country Status Notes
    Austria Illegal (SMG) Prohibited under the Suchtmittelgesetz since June 26, 2019. Possession, production, and sale are criminal offenses.
    Brazil Controlled (Portaria SVS/MS nº 344) Listed as a controlled substance on February 18, 2014 alongside several other novel psychoactive substances. Possession, production, and sale are illegal.
    Canada Schedule I CDSA (analogue) Health Canada declared MXE a controlled analogue of ketamine under Schedule I of the Controlled Drugs and Substances Act in January 2011. Possession, production, and sale are prohibited.
    China Category I Psychotropic Controlled as a Category I psychotropic substance. It is illegal to sell, buy, import, export, or manufacture without authorization. China's ban on production significantly impacted global MXE availability.
    Croatia Controlled (analogue) Reportedly controlled as an analogue of ketamine under national drug legislation.
    Cyprus Controlled Listed in the national drug control law since 2012. Possession, production, and distribution are prohibited.
    Denmark Controlled Covered by the Executive Order on Euphoriant Substances, making possession, production, and distribution illegal.
    France Stupéfiant Added to the list of controlled stupefiant substances on August 5, 2013. Possession, production, and distribution are illegal.
    Germany Anlage I BtMG Controlled under the Betäubungsmittelgesetz since July 2013. Manufacturing, importing, possessing, selling, or transferring without license is prohibited.
    Italy Controlled Listed in the table of controlled drugs since 2016. Possession, production, and distribution are prohibited.
    Japan Narcotic Classified as a narcotic drug effective June 26, 2016. Earlier controls from July 2012 restricted importation, production, and distribution while possession for personal use remained in a legal grey area.
    Netherlands List I (Opiumwet) Added to List I of the Opium Law in July 2015. Possession, production, transport, import, export, and sale are prohibited.
    Russia Controlled Prohibited since October 2011. Possession, production, and sale are illegal under Russian narcotics legislation.
    Slovenia Controlled Listed as a controlled substance per Official Gazette of the Republic of Slovenia No. 62/2013.
    Sweden Narcotic Controlled under the Narcotic Drugs Control Act (SFS 1992-860) and the Narcotic Drugs Control Ordinance (SFS 1994:1554).
    Switzerland Controlled (Verzeichnis D) Specifically named under Verzeichnis D of the Swiss narcotics legislation. Possession, production, and sale are illegal.
    Turkey Controlled Regulated under the Law on Control of Narcotics no. 2313. Unauthorized possession, production, and distribution are prohibited.
    United Kingdom Class B Permanently classified in February 2013 following a Temporary Class Drug Order issued in April 2012. The Advisory Council on the Misuse of Drugs recommended scheduling after reviewing emerging evidence of harm.
    United States Schedule I Federally scheduled on July 6, 2022 under the Controlled Substances Act. Prior to federal scheduling, multiple states enacted their own controls including Alabama (2015), Arizona (2014), Florida (2012), Indiana (2012), Louisiana (2013), Minnesota (2012), North Dakota (2012), Ohio (2012), Virginia (2012), and Utah.

    Harm Reduction

    drugs.wiki

    - Variable potency and frequent misrepresentation have been reported; some user reports historically attributed to MXE were actually other dissociatives. Always test with reagents and, where possible, obtain confirmation via analytical drug checking (e.g., GC–MS/LC–MS). Volumetric dosing reduces large weighing errors. Evidence: Erowid MXE dosage note warns about misrepresented samples; Erowid experience category “What Was in That?” documents mislabeling cases; Erowid dosing articles explain liquid measurement to improve accuracy. - Acute clinical presentations can combine ketamine-like dissociation with sympathomimetic signs (tachycardia, hypertension). Low-dose benzodiazepines were used in case series management. Evidence: ED case series of analytically confirmed MXE exposures. - A distinct acute cerebellar toxidrome (ataxia, nystagmus, incoordination) has been repeatedly described after insufflation; symptoms may last beyond the main psychoactive phase but are usually reversible. Evidence: three analytically confirmed cases. - Chronic harms: animal and in vitro data indicate MXE can induce bladder inflammation/fibrosis and renal toxicity similar to ketamine cystitis; monitor for urinary frequency, urgency, dysuria, or hematuria and stop use if present. Evidence: mouse and rat studies and urothelial cell data. - Pharmacology: besides NMDA antagonism, MXE inhibits monoamine transporters with greatest potency at SERT (low micromolar), so serotonergic combinations may be more unpredictable than with ketamine. Active metabolites (O-desmethyl- and N-desethyl-MXE) retain NMDA-blocking activity and may extend/alter effects. Evidence: in vitro neuropharmacology profiles; NMDA IC50 data for MXE and metabolites. - Set/setting: high doses can cause immobility and loss of consciousness; use a sober sitter, clear physical hazards, and avoid heights/bodies of water. Evidence: harm-reduction guidance and effects summaries noting accident susceptibility. - ROA safety: avoid IV due to unknown cuts and insolubles; if choosing IM, use sterile water or saline, micron filtration, new sterile equipment, proper needle size/site, and aseptic technique to reduce abscess/infection risk. Evidence: Erowid injection basics; community harm-reduction guidance on filtration and sterile prep. - Nasal care: powders can irritate/anaesthetize mucosa; gentle isotonic saline rinse after sessions can reduce local irritation. Evidence: community HR guidance. - Driving/coordination: residual disequilibrium can last into the next day; do not drive or operate machinery until fully baseline. Evidence: TripSit duration (after-effects up to 48 h) and Erowid effects (accident susceptibility). - Legal risks: MXE is controlled in many jurisdictions (e.g., U.S. federally scheduled since July 6, 2022); penalties vary by region. Verify local law before possession. Evidence: Erowid legal status summary.

    References

    Cited References

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