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Also known as bk-mdma, m1, mdmc

βk-MDMA is a cathinone stimulant and empathogen, similar in structure to MDMA, though more stimulating and less empathogenic in comparison. Was very commonly mis-sold as MDMA on the street until it was banned in 2013. The Marquis reagent can differentiate βk-MDMA from MDMA. Less potent than MDMA with a slightly shorter duration.

Oral

Route dataTripSit

ThresholdLightCommonStrongHeavy
100–150 mg150–250 mg200–300 mg300 mg+
0375 mg
LightCommonStrongHeavy
Onset15–60 minutes
Total2–4 hours
After-effects6–24 hours
OnsetCome-upPeakOffset
Plan when to take Methylone — see where onset, peak and comedown land on the clock

Source: TripSit — Methylone ↗

Fact-sheets from PsychonautWiki. Harm-reduction reference only — not medical advice.