3,4-DMMC was first detected in Europe in 2010 and marketed under street names "Ocean" and "M2" as a mephedrone replacement. Potency is noticeably lower than mephedrone; users describe effects as "blunted" or "foggy." Nasal administration produces pronounced chemical burn and rhinorrhea. Pharmacodynamic data show similar affinity at norepinephrine and serotonin transporters but weaker dopamine transporter activity compared to mephedrone, resulting in mild empathogenic effects and potentially higher cardiovascular strain. Physical risks mirror other stimulants: tachycardia, vasoconstriction, hypertension, bruxism, dehydration, and potential hyperthermia in hot environments. Harm-reduction: weigh doses on a 0.001 g scale, allow at least 2 weeks between sessions, maintain hydration/electrolytes, and avoid stacking with other stimulants or serotonergic agents.
Also known as: M2, Ocean
Classification
Chemical: Cathinone
Psychoactive: Entactogen
Psychoactive: Stimulant
Tag: Research-Chemical
Effects
Stimulation
Teeth Grinding
Vasoconstriction
Increased Heart Rate
Increased Blood Pressure
Pupil Dilation
Cognitive Euphoria
Sociability Enhancement
Empathy
Compulsive Redosing
Thought Acceleration
Cognitive Fog
Music Enhancement
Appetite Suppression
Dehydration
Light Sensitivity
Increased Libido
Open Eye Visuals
Routes of Administration
Oral
Dosage
Threshold: ~50 mg
Light: 100-150 mg
Common: 150-250 mg
Strong: 250-350 mg
Heavy: 350 mg
Duration
Onset: 0.25-0.5 h
Comeup: 0.5-1 h
Peak: 1-2 h
Offset: 1 h
After Effects: 2-8 h
Insufflated
Dosage
Threshold: ~20 mg
Light: 30-60 mg
Common: 60-120 mg
Strong: 120-180 mg
Heavy: 180 mg
Duration
Onset: 0.08-0.17 h
Comeup: 0.25-0.5 h
Peak: 0.5-1 h
Offset: 1 h
After Effects: 2-8 h
Harm Reduction
Check interactions before mixing substances, pay attention to dose spacing and hydration, and treat all dosage guidance as approximate rather than guaranteed safe.
Sources
Substance data is aggregated from the following public harm-reduction and reference sources.
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3,4-DMMC - DrugsPRO stoffveiledning
3,4-DMMC: 3,4-DMMC was first detected in Europe in 2010 and marketed under street names "Ocean" and "M2" as a mephedrone replacement. Potency is noticeably lower than mephedrone; users describe effects as "blunted" or "foggy." Nasal administration produces pronounced chemical burn and rhinorrhea. Ph
