Empathogens
Pentylone (bk-MBDB)
Street names: Pentylone, bk-MBDB
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- Weak stimulant/empathogen effects
⚠Key risks
- Sold as fake MDMA
- Stimulant cardiovascular strain
- Little data
✚Overdose signs
- Racing heart
- Agitation
📋Quick facts
Also known asPentylone, bk-MBDB
CategoryEmpathogens
Schedule / classSchedule I (US); controlled EU
AppearanceCrystals/powder — methylone analogue
Street price~$15–$30/g
Legal statusSchedule I US; controlled EU
Last updated2026-09-17
Sources: DEA, EMCDDA
Category comparison — Empathogens
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| Pentylone (bk-MBDB) | Schedule I | Sold as fake MDMA; Stimulant cardiovascular strain | ~$15–$30/g |
| Eutylone | Schedule I | Sold as fake MDMA/Molly — users disappointed, redose; Stimulant strain: heart, BP | ~$15–$35/g |
| Methylone (bk-MDMA) | Schedule I | Often sold as MDMA — users dose it like MDMA but it behaves differently; Serotonin syndrome risk with antidepressants | ~$10–$30 per gram or $5–$15 per pill |
| 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 Pentylone (bk-MBDB) look like?
Crystals/powder — methylone analogue
What are the signs of a Pentylone (bk-MBDB) overdose?
Racing heart; Agitation Call emergency services immediately.
How addictive is it?
Sold as fake MDMA Dependence can develop with regular use.