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AMT (alpha-methyltryptamine) is an alpha-methylated tryptamine that combines serotonergic psychedelic activity with stimulant properties, acting at 5-HT1A and 5-HT2A receptors and the serotonin transporter while also possessing monoamine oxidase inhibiting activity. The alpha-methyl group confers metabolic resistance analogous to that seen in amphetamines, contributing to its notably long duration of action. Originally investigated in the mid-twentieth century as an antidepressant and MAOI, it later re-emerged as an internet-era "research chemical" hallucinogen. Preclinical work shows that AMT and its methoxylated relatives raise dopamine and serotonin turnover across multiple brain regions, while user self-reports describe strong hallucinogenic effects accompanied by anxiety, nausea, and a heavy body load. Its long duration, MAOI activity, and documented fatal intoxications mark it as a comparatively high-risk member of the tryptamine class.
- Combined psychedelic and stimulant character
- Historically studied as an antidepressant
- Long-lasting experience
- Serotonergic psychedelic that is also an MAO inhibitor
- Serotonin toxicity risk from its own MAOI activity
- Nausea and heavy body load
- Raised heart rate, blood pressure, and temperature
Mechanism
AMT combines several actions: agonism at and other receptors gives the psychedelic quality, while it also promotes release and blocks reuptake of serotonin, , and , which produces the stimulant, entactogen-like edge. On top of this it is a reversible monoamine oxidase inhibitor, so it slows the breakdown of monoamines. The alpha-methyl group protects it from rapid metabolism, which is why its effects can last many hours.
receptor fingerprint
receptoragonist
release/reuptakereleaser / reuptake inhibitor
Monoamine oxidasereversible inhibitor
/ transportersreuptake inhibitor
Safetyrisks and cautions, not medical advice
AMT carries real risk: its own MAOI activity plus its serotonin-releasing action make serotonin toxicity a serious concern, and combining it with other serotonergic drugs, stimulants, or tyramine-rich foods can be dangerous. The long duration encourages compulsive redosing and sleeplessness, and the stimulant load strains the heart and can push blood pressure and temperature up. People with cardiovascular problems or a psychosis history should avoid it. Not medical advice.
Subjective profileweighing the evidence above
The MAOI activity is disqualifying for most people. It turns combinations that would merely be unwise with another psychedelic, including stimulants, other serotonergic drugs and tyramine-rich food, into a serotonin toxicity problem. Add a duration long enough to encourage redosing and a heavy cardiovascular load and there is little to recommend here.
Resources
This entry is here for reference.
Research
- 2003first citedAlpha-methyltryptamine revisited via easy Internet access.
- 2025most recentA systematic study of changes in monoamine neurotransmitters in the rat brain following acute a…
- 1.The hallucinogenic world of tryptamines: an updated review
- 2.In vitro monoamine oxidase inhibition potential of alpha-methyltryptamine analog new psychoactive substances for assessing possible toxic risks
- 3.Abuse liability profile of three substituted tryptamines.
- 4.A systematic study of changes in monoamine neurotransmitters in the rat brain following acute administration of alpha-methyltryptamine (AMT), 5-methoxy-alpha-methyltryptamine (5-MeO-AMT) and 5-methoxy-N,N-diisopropyltryptamine (5-MeO-DiPT).
- 5.5-Methoxy-α-methyltryptamine (5-MeO-AMT), a tryptamine derivative, induces head-twitch responses in mice through the activation of serotonin receptor 2a in the prefrontal cortex.
- 6.Psychoactive properties of alpha-methyltryptamine: analysis from self reports of users.
- 7.Fatality due to acute alpha-methyltryptamine intoxication.
- 8.Alpha-methyltryptamine revisited via easy Internet access.
- 9.Trends in DMT and other tryptamine use among young adults in the United States.
9 listed here; entry last updated August 2026
Reviews
My notesprivate to this device
FAQ
Is AMT an MAOI?
Yes, it has reversible MAOI activity of its own, which is why mixing it with serotonergic drugs or tyramine-rich foods is dangerous.
Why does it last so long?
The alpha-methyl group slows its metabolism, so a single experience can span much of a day.
Is it just a psychedelic?
No, it is also a stimulant and monoamine releaser, which adds a body load and cardiovascular strain on top of the psychedelic effects.
Adverse effects
- Serotonin toxicity risk from its own MAOI activity
- Nausea and heavy body load
- Raised heart rate, blood pressure, and temperature
Notes and cautions
- Sleeplessness and compulsive redosing