Stimulants
3-MMC (3-Methylmethcathinone)
Street names: 3MMC, Metaphedrone, 3-Methyl MC
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- Mephedrone's isomer: empathogen + stimulant, 4–6 h; smoother redose curve than 4-MMC
⚠Key risks
- THE Netherlands' current crystal — since 4-MMC and 4-CMC bans, 3-MMC dominated the NL scene 2022–2025
- Cardiovascular strain; overheating in clubs
- Compulsive redosing; serotonin depletion
- Injected in NL scene — vein damage, infections
✚Overdose signs
- Racing irregular heart
- Overheating
- Severe agitation, seizures
📋Quick facts
Also known as3MMC, Metaphedrone, 3-Methyl MC
CategoryStimulants
Schedule / classSchedule I analog (US); illegal NL/UK/DE/ most EU
AppearanceWhite/off-white crystals or powder; 'dutch 3mmc' shards
Street price~€10–€25/g Netherlands
Legal statusIllegal NL (2021), UK Class B, DE; analogue US
Last updated2026-09-18
Sources: EMCDDA, NPS-AD
Category comparison — Stimulants
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| 3-MMC (3-Methylmethcathinone) | Schedule I analog | THE Netherlands' current crystal — since 4-MMC and 4-CMC bans, 3-MMC dominated the NL scene 2022–2025; Cardiovascular strain; overheating in clubs | ~€10–€25/g Netherlands |
| Mephedrone (M-Cat / Meow Meow) | Schedule I | Cardiovascular strain — racing heart, overheating; Compulsive redosing drives days-long binges and psychosis | $15–$40/g |
| 3-CMC / 4-CMC (clephedrone/chloromethcathinone) | Controlled in several EU states; analogue prosecutions | Suspected serotonin neurotoxicity (chlorine atom like para-chloroamphetamine); Cardiovascular strain | ~$15–$35 per gram |
| 4-MMC crystals | Schedule I | Identical harms to mephedrone; 'crystal' purity claims are unverifiable | ~$20–$50 per gram |
Street prices are regional estimates. Potency and cuts vary constantly.
?Frequently asked questions
What does 3-MMC (3-Methylmethcathinone) look like?
White/off-white crystals or powder; 'dutch 3mmc' shards
What are the signs of a 3-MMC (3-Methylmethcathinone) overdose?
Racing irregular heart; Overheating; Severe agitation, seizures Call emergency services immediately.
How addictive is it?
THE Netherlands' current crystal — since 4-MMC and 4-CMC bans, 3-MMC dominated the NL scene 2022–2025 Dependence can develop with regular use.
🔗Sources & further reading
Facts on this page are compiled from these primary sources. External links open in a new tab.