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§2.3.4 · Chemicals › Stimulants

3-MMC

3-Methylmethcathinone

Also known as Metaphedrone

Acute: High riskDependency: High risk

Images

Quick reference

Form
/ RoA Powder / Insufflated

Duration

Onset
5 Minutes
Total duration
3 Hours

Experience

Primary effects

  • Causes significant stimulation, a nice buzz, warmth, and sweating.
  • Induces a strong rush of serotonin, leading to intense horniness and potential as a chemsex drug.

Peak character

  • Characterized by a firm, heady intensity within the overall buzz.
  • Users may feel hot and clammy, with strong urges and struggling impulse control.

Negatives / side effects

  • Insufflation is painful and can cause eye watering.
  • Highly compulsive redosing, easily leading to binges; weighing doses while impaired is dangerous.
  • User notes potential toxicity, specifically heart valve issues, and compares its intensity to amphetamines.
  • Feeling rough for the next day and part of the day after; potential for being 'very zoned out'.

Aftereffects / comedown

  • Feeling 'out of it' and tired the morning after, but not overly drained.
  • Lingering rough feeling which may benefit from cannabis.

Reference dosage

Reference ranges from third-party harm-reduction databases. Individual response varies enormously — start lower than you think.

Any route
light20mg+
common40mg+
strong60mg+
heavy120mg+

Reagent testing

Recommended reagents
MarquisMandelinMeckeFroehde
Expected reactions
MarquisOrange → brown
MandelinGreen → blue/black
MeckeBlue/green
FroehdeOrange → brown

Adulterant detection: Cathinone derivative. Mephedrone (4-MMC) is a common adulterant/substitute — reagent profiles are similar but Mandelin can help differentiate.

Use at least two reagents. Cannot definitively distinguish 3-MMC from 4-MMC (mephedrone) without GCMS.

Source

Reference fields and narrative for 3-MMC extracted from The Drug Users Bible by Dominic Milton Trott (MxZero Publishing, 2022).

drugusersbible.com

Harm reduction notice

This platform provides educational and harm-reduction information adapted from public reference material. It does not endorse, encourage, or facilitate drug use. It is not medical advice. If you or someone near you may be in a medical emergency, contact local emergency services immediately.