4,4'-DMAR is an extremely potent stimulant that is 5-10 times more potent than MDMA as a monoamine releasing agent. It has pharmacological properties comparable to MDMA but with higher potency and longer duration. Unlike many amphetamines, 4,4'-DMAR lacks TAAR1 agonism, meaning it does not auto-inhibit its own effects, potentially making it more dangerous. It has been associated with at least 31 fatalities in Europe, often when combined with other substances. Serious health risks include serotonin syndrome, hyperthermia, seizures, cardiovascular complications, and pulmonary hypertension.
Also known as: 4,4-dmap, Serotoni, Serotoni, para-methyl-4-methylaminorex, 4-methyl-euphoria, 4-methyl-U4Euh, Para-methyl-4-methylaminorex
Classification
Chemical: Aminorex
Psychoactive: Entactogen
Psychoactive: Stimulant
Tag: Empathogen
Tag: Habit-Forming
Tag: Research-Chemical
Tag: Tentative
Effects
Increased Energy
Stimulation
Physical Energy
Teeth Grinding
Jaw Tension
Sweating And Increased Body Temperature
Euphoria
Enhanced Focus
Increased Sociability
Empathogenic Effects
Empathy Enhancement
Sociability Enhancement
Appetite Suppression
Light Sensitivity
Dehydration
Increased Libido
Vibrating Vision
Disinhibition
Routes of Administration
Oral
Dosage
Threshold: ~1–3 mg (anecdotal)
Light: ~5–10 mg (anecdotal)
Common: ~10–25 mg (anecdotal)
Strong: ~25–40 mg (anecdotal)
Heavy: >40 mg (high risk; avoid)
Duration
Onset: 0.75-2 h
Peak: 2-4 h
Offset: 2-4 h
After Effects: 9-24 h
Total Duration: 8-14 h
Insufflated
Dosage
Threshold: ≤1–2 mg (anecdotal)
Light: ~2–5 mg (anecdotal)
Common: ~5–10 mg (anecdotal)
Strong: ~10–20 mg (anecdotal)
Heavy: >20 mg (high risk; avoid)
Duration
Onset: 0.5-1.5 h
Peak: 1.5-4 h
Offset: 2-4 h
After Effects: 8-24 h
Total Duration: 6-12 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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4,4'-DMAR - DrugsPRO substancijos vadovas
4,4'-DMAR: 4,4'-DMAR is an extremely potent stimulant that is 5-10 times more potent than MDMA as a monoamine releasing agent. It has pharmacological properties comparable to MDMA but with higher potency and longer duration. Unlike many amphetamines, 4,4'-DMAR lacks TAAR1 agonism, meaning it does no
