Stimulants
4-FMA (4-Fluoromethamphetamine)
Street names: 4-FMA
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- Strong empathogen-stimulant
⚠Key risks
- Serotonin neurotoxicity concerns
- Cardiovascular strain
- Overheating
✚Overdose signs
- Overheating
- Racing heart
- Serotonin syndrome signs
📋Quick facts
Also known as4-FMA
CategoryStimulants
Schedule / classAnalog prosecution; controlled several EU
AppearanceWhite powder
Street price~$10–$30/g
Legal statusAnalogue US; controlled several EU
Last updated2026-09-17
Sources: EMCDDA
Category comparison — Stimulants
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| 4-FMA (4-Fluoromethamphetamine) | Analog prosecution; controlled several EU | Serotonin neurotoxicity concerns; Cardiovascular strain | ~$10–$30/g |
| 4-FA (4-Fluoroamphetamine) | Analog prosecution; controlled several EU | Suspected serotonin neurotoxicity (fluoro-amphetamine family); Overheating in clubs | ~$10–$30/g |
| 2-FMA (2-Fluoromethamphetamine) | Analog prosecution; controlled several EU | Long duration = insomnia stacking; Vasoconstriction | ~$15–$35/g |
| MDMA | Schedule I | Overheating + dehydration (or fatal water intoxication); Serotonin depletion — multi-day comedown | ~$10–$40 per pill |
Street prices are regional estimates. Potency and cuts vary constantly.
?Frequently asked questions
What does 4-FMA (4-Fluoromethamphetamine) look like?
White powder
What are the signs of a 4-FMA (4-Fluoromethamphetamine) overdose?
Overheating; Racing heart; Serotonin syndrome signs Call emergency services immediately.
How addictive is it?
Serotonin neurotoxicity concerns 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.