Library
4-MTA
4-MTA is an extremely dangerous substance with a high fatality rate. It acts as both a potent serotonin releaser and MAO-A inhibitor, creating severe risk of fatal serotonin syndrome and hyperthermia. The slow onset (30-90 minutes) leads to high redosing risk and accidental overdose. Street tablets typically contained 100-140mg. Multiple deaths were reported in Europe in the late 1990s.
Also known as: Mta, Flatliners, Golden eagle, 4-methylthioamphetamine, P-methylthioamphetamine, Para-methylthioamphetamine
Classification
- Chemical: Amphetamine
- Psychoactive: Entactogen
- Psychoactive: Psychedelic
- Psychoactive: Stimulant
- Tag: Empathogen
- Tag: Research-Chemical
- Tag: Tentative
Effects
- Stimulation
- Hyperthermia
- Nausea
- Headache
- Muscle Rigidity
- Tachycardia
- Empathy
- Euphoria
- Sociability Enhancement
- Agitation
- Confusion
- Anxiety
- Light Sensitivity
- Color Enhancement
- Open Eye Visuals
- Tactile Enhancement
- Appetite Suppression
Routes of Administration
Oral
Dosage
- Threshold: 5 mg
- Light: 10-20 mg
- Common: 20-40 mg
- Strong: 30-40 mg (high risk)
- Heavy: 40+ mg (danger: markedly increased risk of serotonin syndrome and hyperthermia)
Duration
- Onset: 0.5-1.5 h
- Comeup: 1-2 h
- Peak: 2-8 h
- Offset: 4-12 h
- After Effects: 20-44 h
- Total Duration: 8-20 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.
Links
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