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    ๐Ÿงช This is a research chemical with limited data on its long-term health effects, toxicity profile, and safe dosage ranges.

    4-MMC Well-documented
    Well-documented
    Multiple authoritative sources agree on dosing and effects.
    • 5 corroborating sources
    • 2 ROAs with full dose ladders
    • duration data present
    • PubChem toxicity data
    • classified Research-chemical

    Aliases: Meow, Drone, M-cat, Bubble, Meow meow, 4-methylmethcathinone, 4mmc, mephedrone

    Summary TheDrug.Wiki TripSit PsychonautWiki

    4-Methylmethcathinone (also known as 4-MMC, M-CAT, drone, meow meow, and mephedrone) is a novel entactogen-stimulant substance of the cathinone class. Mephedrone belongs to a group known as the substituted cathinones, which are derivatives of the active ingredient in the khat plant (Catha edulluis). It is thought to produce its effects by promoting the release of the neurotransmitters serotonin, dopamine, and norepinephrine in the brain.

    Perspectives

    “This was a very enjoyable experience, and one which confirmed the reputation of mephedrone for short term effect and the temptation to sustain the euphoric high via compulsive redosing.”

    Dose Information TheDrug.Wiki TripSit PsychonautWiki

    ROA Light Common Strong Heavy
    Oral 50-100mg 100-200mg 200-300mg 300mg+
    Insufflated 15-45mg 45-80mg 80-125mg 125mg+
    Light Common Strong Heavy

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

    ROA Onset Comeup Peak Offset After Effects Total
    Oral 15-45 min 10-20 min 30-90 min 1-2 hrs 2-24 hrs 4-8 hrs
    Insufflated 5-15 min 5-10 min 15-30 min 1-2 hrs 2-24 hrs 3-6 hrs
    Rectal 10-20 min 10-15 min 30-60 min 1-2 hrs 2-24 hrs 2-3 hrs
    Intravenous 0-5 min 2-5 min 15-30 min 45-90 min 2-24 hrs 2-3 hrs

    Effect Profile

    148 reports

    Scores (1–10) curated from multiple sources:

    • Effect keyword matching from PsychonautWiki catalog
    • Validated against 148 Erowid trip reports
    • Weighted by importance: core (×3), major (×2), minor (×1)

    Full methodology

    Empathogen 6.7
    Strong+ 7/10

    Strong euphoria and stimulation with moderate empathy, mild sensory enhancement

    Empathy / Social Openness ×3
    6
    empathy, affection, and sociability enhancement empathy, love, and sociability enhancement

    “Spent a while puking about then about 8 hours of intense tripping, way beyond the point where 2c-b is a fun enjoyable sociable fun drug.”

    SmokingAces bluelight

    “We agree that we feel slight warmth.”

    frozenorange bluelight
    Euphoria / Mood Elevation ×2
    8
    cognitive euphoria

    “------------------------------------------------------------------------------------------ Update: well hell, those were a wild and wonderful few years.”

    frozenorange bluelight

    “Eye wobbles , euphoria and absolutely filthy ness in the bedroom”

    Pinky_n_the_Brain bluelight
    Stimulation ×1
    8
    stimulation wakefulness teeth grinding increased heart rate

    “There is no coke in coke anymore and if there is it's overwhelmed by the jittery shittiness of being cut hard with ephedrine, at least that's what my test results have come up with.”

    Inflorescence bluelight

    “But were I live there are people doing insane amounts of the stuff staying awake for days on end really abit worrying as some of my friends have totally changed and totally altered how they think ,...”

    Pinky_n_the_Brain bluelight
    Sensory Enhancement ×1
    5
    tactile enhancement spontaneous tactile sensations increased libido

    “The contents are a fine, dry crystalline powder that has a distinctive sweet smell.”

    frozenorange bluelight

    “hi guys, I received a gram of mephedrone (Dont know exactly, maybe 4MMC, maybe 3MMC, maybe...), but it is like mephedrone and i took this a lot time, but this stuff is "wet", and i tried to dry up...”

    Mirek bluelight

    User Experience

    euphoria “------------------------------------------------------------------------------------------ Update: well hell, those were a wild and wonderful few years.” — frozenorange, bluelight
    Stimulant 6.0
    Strong 6/10

    Strong euphoria with moderate stimulation, mild anxiety/jitters, low focus

    Stimulation / Energy ×3
    7
    stimulation wakefulness

    “I had 3-mmc with a few drinks recently and it was quite pleasant like diet mepth....kept me awake..did some creative stuff.”

    Inflorescence bluelight

    “But were I live there are people doing insane amounts of the stuff staying awake for days on end really abit worrying as some of my friends have totally changed and totally altered how they think ,...”

    Pinky_n_the_Brain bluelight
    Euphoria / Mood Lift ×2
    9
    cognitive euphoria motivation enhancement

    “Itโ€™s a bit rushy too.”

    frozenorange bluelight

    “With stupid tolerance yeah, maybe, but if your tolerance is that high then you have a serious problem anyway.”

    SummerSerenade bluelight
    Focus / Productivity ×2
    2
    analysis enhancement motivation enhancement thought acceleration

    “All of us have substantial experience in taking stimulants of all kinds, but have over time narrowed our interest in these to cocaine and MDMA as these, in our opinion, work best for our headspace...”

    frozenorange bluelight

    “fine, did the work, after that ofcourse bad mood, dont want to do anything, it was midnight (take meph around 8-9pm) and I wanted to sleep..”

    Mirek bluelight
    Anxiety / Jitters ×1
    5
    anxiety teeth grinding increased heart rate jaw clenching vasoconstriction

    “In my experience, meph and MD have very different comedown effects during the week after use Meph is more of a jittery, anxiety filled affair where MD just makes me feel genuinely depressed for 2/3...”

    poparopaliss bluelight

    “Weโ€™re feeling slight jaw tension, and weโ€™re experiencing visual twitching a la MDMA.”

    frozenorange bluelight

    User Experience

    euphoria “Itโ€™s a bit rushy too.” — frozenorange, bluelight

    Tolerance

    Build-up develops within a single session; strong urge to redose
    Reset a few days for acute tolerance

    Tolerance Decay

    Full tolerance 1d Half tolerance 7d Baseline ~10d

    Tolerance builds rapidly within and across sessions for monoamineโ€‘releasing stimulants; user reports suggest partial crossโ€‘tolerance with MDMA, amphetamines, and other cathinones. Data are anecdotal; schedule extended breaks (โ‰ฅ2 weeks) to reduce comedown and restore baseline.

    Cross-Tolerances

    Effects Erowid

    Aggregated from 148 Erowid experience reports

    Positive Effects 11

    Euphoria 68.2% 70%
    Stimulation 53.4% 70%
    Music Enhancement 43.9% 70%
    Empathy 39.2% 70%
    Tactile Enhancement 33.1% 70%
    Focus Enhancement 29.1% 70%
    Color Enhancement 18.2% 70%
    Body High 14.9% 70%
    Introspection 9.5% 70%
    Pain Relief 4.1% 70%
    Creativity Enhancement 2.7% 70%

    Adverse Effects 13

    Anxiety 38.5% 70%
    Jaw Clenching 30.4% 70%
    Pupil Dilation 20.9% 70%
    Confusion 20.3% 70%
    Increased Heart Rate 18.9% 70%
    Headache 14.9% 70%
    Nausea 14.2% 70%
    Sweating 13.5% 70%
    Memory Suppression 10.8% 70%
    Muscle Tension 8.1% 70%
    Motor Impairment 4.1% 70%
    Psychosis 4.1% 70%
    Appetite Suppression 4.1% 70%

    Combinations TripSit

    Cross-Check 4-MMC with another substance

    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 8 reports 3 positive 3 neutral 2 cautionary visit
    A Successful Relationship with It positive exp #92743

    This report is a retrospective look at what has easily become on of my favorite substances I've ever ingested, 4-methymethcathinone (mephedrone). The following report will be an introduction, summary of four various experiences, and a section summarizing my current ย“finalย” thoughts on the compound.

    Society · 4-Methylmethcathinone
    Psychological Walls Shattered and Dyslexia positive exp #109397

    I've decided to submit this despite its age because my experiences were life-changing in retrospect, although they came with some potential risks. Back when mephedrone was de facto legal, I once obtained a gram of pure crystals.

    stbot32 · 4-Methylmethcathinone · repeated insufflated / 1 bowl smoked
    Love Bonding Noseburn positive exp #87368

    Love Bonding Noseburn I decided to write my first experience report about two hours into this experience, and I am so glad I did because for me this is a beautiful experience to look back upon, in contrast to a noticeable percentage of reports of users going out for a night with the lads wanting to get off instead of t...

    ChemicalMass · 4-Methylmethcathinone (aka Mephedrone) · repeated insufflated
    Black Magic neutral exp #78758

    I. Introduction The time was 13:00 approximately a week before this report's composition. I had just woken up, well-rested, and called to get a bit of (weak) cocaine, and on the way out I discovered that the sample containing several capsules of the aforementioned dose of mephedrone (purportedly) had arrived.

    Poindexter · 4-Methylmethcathinone (Mephedrone)
    Pace Yourself Race Horse neutral exp #97666

    Back story: My friend, who will here be known as Andrew, his boyfriend Oba and myself had taken 1 week prior to this experience what we thought at the time was MDMA. It was a great experience and we felt absolutely on top of the world.

    Mike · 4-Methylmethcathinone · repeated insufflated
    Dangerously Addictive, but Awesome neutral exp #76345

    (4-Methylmethcathinone is referred to as mephedrone in the review) 1. Prologue - How I came into contact with drugs. When I moved to another town to study, I got my own apartment, and so did a close friend of mine, ย”Eย”. We were both 19 years old and we enjoyed the new-found freedom of living alone.

    Fazer · 4-Methylmethcathinone · 125 mg insufflated / 250 mg oral / 250 mg oral / 125 mg insufflated
    My Favourite! cautionary exp #85212

    I do not have a scale so cannot give accurate amounts, however each line and bomb is the same amount: bomb= roughly four keys worth Line= 5 keys worth Starting positions Me: Taking cyclizine and cocodamol prescription drugs for other probs, can differentiate symptoms from illness and from drugs quite happily, will not...

    E · 4-Methylmethcathinone (Mephedrone) · oral / oral / repeated insufflated / repeated oral
    The Rest of the Night Was a Complete Blur cautionary exp #86040

    IV'ing Mephedrone for the Adventerous or Stup 4-methylmethcathinone, first set of experiences, 6 grams over 3 days First and foremost I must state that I've been doing forms of speed for over 30 years, and have found IV the most intense and satisfying method of injection.

    Number Six · 4-Methylmethcathinone
    Bluelight 8 threads 2 positive 4 neutral 2 cautionary visit
    Mephedrone Experienced Life Changing Drug positive

    on friday night the 12th of march i did decided to do ecstacy for the first time this year, and what a trip im still rolling as i speak but this is how it all started i've been doing the new disigner drug called "mephedrone" that was been coming around for quite awhile ...

    scraped 2026-03-14
    Mephedrone 75 100 Mgs Riding On Top Of Cloud Nine positive

    Mephedrone. This word takes the meaning of a rediculously sensational, euphoric drug that not many people (at least in NC) know about. Every person I've shared this with has said: 1 that they fucking love me and 2 this is THE best drug ever and 3 I wanna go fuck! haha I'm not even kiding when I say that this shit is on...

    scraped 2026-03-14
    Mephedrone Experienced Why I Fricking Love Mephedrone neutral

    All I hear is bad things about mephedrone, and I really don't understand why. I wanna stick up for my favourite drug :D Me and my best friend in the whole world were having a little bit of a binge on meph last night (all night), and every time we thought of a reason why meph is awesome, we shouted it out.

    scraped 2026-03-14
    Mephedrone 200mg 1st Time Experienced Night Of Legal Highs Real Time neutral

    Setting & Factors: I'm a 6'1" male. Late 20's. Developed a slight tolerance to MDMA many years ago, but it's pretty much back to normal these days. I'm at home, alone, in a well-heated, softly-lit apartment. I have access to music, TV and a laptop. Context: Haven't done MDMA in over two years.

    scraped 2026-03-14
    Mephedrone New Experience 500mg Insufflated Over 7 Hours neutral

    Hi all, new here but long-term lurker and a big fan of the site. Here's a little about me for some background info... http://www.bluelight.ru/vb/showthread.php?t=492534 It's worth noting that the only drugs I touch now are alchohol (wine with meal etc.) and coffee.

    scraped 2026-03-14
    Mephedrone Semi Experienced First Time At The Club neutral

    This was around my 5th time doing Mephedrone so far but it was my first time ever doing it at a club. The day of I tried to fast as much as possible but ended up eating some beforehand and then a cup of Ramen noodles about an hour before I took my first pill.

    scraped 2026-03-14
    Mephedrone First Time Bliss cautionary

    This is really long. I'm sorry ahead of time. This was a conscious stream of thoughts for 3 hours. Tonight is the night I'm going to try Mephedrone for the first time. I do not have any past experience with ecstasy or methanphetamine so this will be completely new to me.

    scraped 2026-03-14

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