Stimulants
Mephedrone (4-MMC)
Street names: 4-MMC, Meow Meow, M-Cat, Drone, Bubbles
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- Euphoria, empathy, energy, strong urge to redose
⚠Key risks
- Cardiovascular strain; compulsive redosing
- Serotonin depletion crashes; psychosis with binges
✚Overdose signs
- Racing irregular heart
- Overheating, sweating
- Agitation, seizures
📋Quick facts
Also known as4-MMC, Meow Meow, M-Cat, Drone, Bubbles
CategoryStimulants
Schedule / classSchedule I (US, 2011); Class B UK
AppearanceWhite/off-white crystals or powder (crystals = '4-MMC crystals')
Street price~$15–$40 per gram
Legal statusSchedule I (US); Class B UK; controlled EU/AU
Last updated2026-09-12
Sources: EMCDDA, NIDA, Home Office
Category comparison — Stimulants
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| Mephedrone (4-MMC) | Schedule I | Cardiovascular strain; compulsive redosing; Serotonin depletion crashes; psychosis with binges | ~$15–$40 per gram |
| Cocaine | Schedule II | Heart attack/stroke even in young users; Severe addiction — craving cycle | ~$60–$120 per gram |
| Speed (amphetamine paste) | Schedule II | Insomnia, anxiety, paranoia; Heart strain and overheating | ~$10–$40 per gram |
| Methamphetamine | Schedule II | Addiction — among the most addictive drugs known; Meth mouth, skin sores, psychosis | ~$20–$100 per gram |
| Adderall (amphetamine salts) | Schedule II | Dependence and tolerance; Cardiovascular strain | ~$3–$15 per 30 mg tablet |
| Adderall XR | Schedule II | Same as Adderall; long duration masks sleep debt; Beads snorted bypass XR mechanism | ~$5–$20 per 30 mg capsule |
Street prices are regional estimates. Potency and cuts vary constantly — see our pressed pill guide.
Spotted wrong or outdated info?
Profiles are reviewed against NIDA/DEA/EMCDDA sources. See something off? Submit a correction — it goes straight to our editorial queue.