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Psychedex
Facts label

3-MMC Facts

Stimulant; Entactogen; Substituted cathinone; Monoamine releasing agent

Dose and durationby route · individual sensitivity varies

Oral(mg)
Threshold< 15 mgLight25 – 75 mgCommon75 – 150 mgStrong150 – 250 mgHeavy250+ mg

Starts in 15 – 30 minLasts 4 – 6 hoursAfter-effects 2 – 4 hours

Also recorded: Insufflated · Intravenous. See full page: psychedex.org/substances/3-mmc

Body and dependence

Acute toxicity
Moderate
Chronic toxicity
Moderate
Physical dependence
Low
Psychological dependence
High
Withdrawal
Mild
Compulsive redosing
High

Tolerance

Builds
Moderate
Fully resets after
10 days
Carries over to
amphetamine; methamphetamine; mephedrone; cocaine; methylphenidate; MDMA

Effectslikely at a common dose

Perception
none likely · 6 possible
Body
Stimulation; Wakefulness; Appetite suppression; Pupil dilation; +24 possible, including Temperature dysregulation, Vasoconstriction, Excessive sweating
Thinking
none likely · 18 possible, including Compulsive redosing urge
Feeling
Euphoria; +9 possible, including Anhedonia, Anxiety, Dysphoria
Self
none likely · 7 possible, including Craving, Compulsive repetitive behavior
Time
none likely · 1 possible

Who shouldn't take it

Absolute
Hypertension; Coronary artery disease; Cardiac arrhythmias; Psychotic disorders; Pregnancy; Concurrent MAOI use
Relative
Bipolar disorder; Hepatic impairment; Concurrent serotonergic medication

Combinations61 recorded

Lethal (2)
MAOIs; Tramadol
Dangerous (33)
Alpha-2 adrenergic receptor antagonist; Anticholinergics; Atypical antipsychotics; Caffeine; Dopamine agonists; Ephedrine, Pseudoephedrine; Local anesthetics; MDMA, Amphetamines; MDMA, MDA; NDRIs (Wellbutrin); NRIs; Opioids; SNRIs; SSRIs; Stimulants; 5-HTP, Tryptophan; Antihistamines; Antipsychotics; Buspirone; Clonidine, Guanfacine; DXM; GHB, Baclofen; GHB, GBL; Ibogaine; and 9 more, see full page
Caution (23)
See full page: psychedex.org/substances/3-mmc
Not graded (3)
Not listed never means safe.

Seek help immediately if

  • Overheating / very high body temperature — heavy sweating, then hot dry skin (the leading cause of MDMA deaths, worse when dancing in hot venues)
  • Muscle rigidity, jaw clenching, tremor, or twitching (possible serotonin syndrome)
  • Fast, pounding heartbeat; chest pain
  • Agitation, confusion; seizures
  • Hyponatremia (water intoxication) — headache, confusion, drowsiness, vomiting, and seizures from drinking too much water
  • Nausea/vomiting; collapse or unconsciousness

What to do

  1. Move them somewhere cool and help them cool down — overheating is the main danger
  2. Sip water to stay hydrated but DO NOT overdrink — roughly a cup (250 ml) per hour if active; too much water can be deadly (hyponatremia)
  3. Get them to rest and stop dancing
  4. For overheating, seizures, chest pain, muscle rigidity/tremor, confusion, or unresponsiveness, call emergency services
  5. Recovery position if drowsy or vomiting; stay with them
  6. Be ready to give rescue breaths / CPR

Most resolve with cooling, rest, sensible hydration, and time. The life-threatening dangers are hyperthermia, serotonin syndrome, and hyponatremia (too much water) — each a medical emergency, not something to wait out.

988 Suicide & Crisis LifelineFireside Project: 62-FIRESIDE

psychedex.org/substances/3-mmc · Version r1.a1 · Not medical adviceValues as of
On the printout