5-MeO-DMT

Psychedelic

5-MeO-DMT is an extremely potent, fast-acting psychedelic tryptamine found in the venom of the Sonoran Desert toad and in some plants, and also made synthetically. Rather than the rich visuals of DMT, it tends to produce a sudden, overwhelming experience of ego dissolution and oneness lasting only minutes.

Also known as: 5-methoxy-N,N-dimethyltryptamine, Bufo, Toad, The God molecule, Sonoran Desert toad venom, Jaguar

Written by Psymerge Editorial Team · Last updated June 4, 2026

Key facts

CategoryPsychedelic
OnsetSeconds (vaporised/smoked)
Peak1–15 minutes
Total duration15–45 minutes
After-effectsDisorientation and afterglow for up to a few hours

Overview

5-MeO-DMT (5-methoxy-N,N-dimethyltryptamine) is a serotonergic psychedelic of the tryptamine family. It occurs naturally in the venom of the Sonoran Desert toad (Incilius alvarius, formerly Bufo alvarius) and in several plants, and it is also produced synthetically. It is several times more potent by weight than DMT, and its effects are qualitatively different: instead of the vivid visual landscapes and 'entity' encounters often reported with DMT, 5-MeO-DMT tends to produce a near-instant, overwhelming dissolution of the self and a sense of merging with everything (Uthaug et al., 2019).

Smoked or vaporised, onset is almost immediate and the experience is over within roughly 15–45 minutes. Early observational research in naturalistic settings has reported associations with improvements in mood and well-being (Davis et al., 2019), and clinical research is now underway, but controlled data remain limited.

5-MeO-DMT is also one of the more physically risky psychedelics: its intensity, the variability of toad-derived material, and dangerous interactions with MAO-inhibiting drugs all demand caution. This page summarises its pharmacology, effects, risks, and harm-reduction practices, drawing on peer-reviewed literature and established harm-reduction resources.

History & origins

5-MeO-DMT was first synthesised in 1936 and identified as a natural component of plants such as Anadenanthera (used historically in South American snuffs) and of the venom of the Sonoran Desert toad. Unlike ayahuasca, the practice of smoking vaporised toad secretion for its psychedelic effects appears to be relatively modern, popularised from the 1980s onward rather than rooted in a documented ancient ceremony.

5-MeO-DMT was placed under international and national drug controls in the 2010s in many countries. Scientific and clinical interest has grown rapidly since the late 2010s following observational reports of mental-health benefits (Davis et al., 2019; Uthaug et al., 2019), and several biotech companies are now studying synthetic 5-MeO-DMT for depression.

Pharmacology & how it works

5-MeO-DMT is a tryptamine that acts as a potent agonist at serotonin receptors. Compared with the classic 5-HT2A psychedelics, it has especially high affinity for the 5-HT1A receptor alongside its action at 5-HT2A, and this distinctive profile is thought to underlie its characteristic ego-dissolving, less visual effects.

Chemical class
Tryptamine (serotonergic psychedelic)
Routes of administration
Vaporised or smoked (synthetic freebase or toad secretion), Insufflated, Sublingual or buccal
Tolerance
There is no evidence of physical dependence; cross-tolerance with other serotonergic psychedelics is likely with repeated use.

Pharmacokinetics

Smoked or vaporised, 5-MeO-DMT acts within seconds, peaks within minutes, and resolves within roughly 15–45 minutes. Like DMT it is metabolised by monoamine oxidase, which is why combining it with an MAO inhibitor dramatically and dangerously increases and prolongs its effects.

Effects

Physical Effects

  • A rapid, steep rise in heart rate and blood pressure
  • Flushing and a sense of bodily heat
  • Loss of physical coordination and control of the body
  • Nausea or vomiting
  • Irregular or laboured breathing

Psychological Effects

  • A near-instant, overwhelming onset
  • Complete ego dissolution or a 'white-out'
  • A sense of merging with everything (nondual unity)
  • Loss of any sense of time, space, or self
  • Intense fear or panic during difficult experiences
  • Little of the detailed visual imagery typical of DMT

Spiritual Effects

  • Profound mystical or unitive experiences
  • Feelings of oneness, sacredness, or encountering 'the void'
  • Lasting shifts in outlook reported after a single session

Dosage Information

Low: 2–5 mg (vaporised synthetic freebase)
Medium: 5–15 mg (vaporised synthetic freebase)
High: 15–20+ mg (vaporised synthetic freebase)

5-MeO-DMT is extremely potent, so small differences in dose matter a great deal. The figures here are for measured synthetic freebase; toad secretion varies enormously in concentration, making accurate dosing very difficult and raising the risk of accidental overdose. Educational only and not an endorsement of use.

Risks & safety

Contraindications

5-MeO-DMT causes sharp cardiovascular changes and an overwhelming loss of bodily and mental control, so it is generally inadvisable for:

  • Cardiovascular conditions: heart disease, uncontrolled high blood pressure, or a history of stroke.
  • Psychiatric history: a personal or family history of psychosis, schizophrenia, or bipolar disorder.
  • Use of MAO inhibitors or serotonergic antidepressants (see interactions below).
  • Pregnancy and breastfeeding.

Drug interactions

The single most dangerous issue with 5-MeO-DMT is its interaction with monoamine-oxidase inhibitors.

  • MAO inhibitors (including ayahuasca-type harmala alkaloids and some antidepressants): these dramatically intensify and prolong 5-MeO-DMT's effects and have been implicated in serious harm and deaths. This combination should be avoided entirely.
  • SSRIs, SNRIs, and other serotonergic drugs: raise the risk of serotonin syndrome, a potentially life-threatening reaction.
  • Stimulants: add cardiovascular strain.

This list is not exhaustive. Disclose all medications to a clinician before considering use.

Psychological distress & bad trips

Because the onset is almost instantaneous and the experience can completely dissolve the sense of self, 5-MeO-DMT can be profoundly disorienting or terrifying, particularly without preparation or skilled support. Some people experience intense fear, panic, or a feeling of dying. Difficult after-effects and unexpected 're-activations' of the state have also been reported in the hours and days afterward.

Rare but serious risks

5-MeO-DMT carries notable acute physical risks:

  • Loss of body control and injury: the sudden, incapacitating onset can lead to falling, thrashing, or vomiting with a risk of choking, so physical support from a sitter is essential.
  • Cardiovascular strain: steep rises in heart rate and blood pressure can be dangerous for people with heart conditions.
  • Breathing problems, seizures, and loss of consciousness have been reported, especially at high or poorly measured doses.
  • Unreliable dosing: toad secretion varies greatly in strength, making accidental overdose a real possibility.
  • Deaths have occurred, most often in combination with MAO inhibitors or against a background of pre-existing health conditions.

Vulnerable populations

Some groups face substantially higher risk and should avoid 5-MeO-DMT:

  • People with heart disease or high blood pressure.
  • People with a personal or family history of psychosis, schizophrenia, or bipolar disorder.
  • People taking MAO inhibitors, antidepressants, or other serotonergic medications.
  • Adolescents, whose brains are still developing.
  • Pregnant or breastfeeding people.

Dependency & addiction potential

Like other serotonergic psychedelics, 5-MeO-DMT is not considered addictive and does not produce physical dependence or compulsive use. Its dangers lie in its acute physical and psychological intensity and its interactions with other drugs, not in dependence.

Overdose

No precise lethal dose has been established for healthy people, but 5-MeO-DMT's extreme potency and the unpredictable strength of toad-derived material make accidental overdose a genuine risk. The principal acute dangers are severe cardiovascular strain, breathing difficulties, and — above all — combination with MAO inhibitors, which has been linked to deaths. If someone experiences chest pain, a very high heart rate, breathing difficulty, seizures, a dangerously high temperature with muscle rigidity (possible serotonin syndrome), or loss of consciousness, seek emergency medical help immediately.

Harm Reduction

  • Never combine 5-MeO-DMT with MAO inhibitors (including ayahuasca/harmala alkaloids) or with SSRIs and other serotonergic antidepressants — this is a leading cause of serious harm and death.
  • Always have a trained, sober sitter who can physically support and protect you; never use alone.
  • Prefer carefully measured synthetic 5-MeO-DMT over toad secretion: dosing is far more reliable, and harvesting threatens the Sonoran Desert toad.
  • Start with a low, precisely weighed dose, since the compound is extremely potent and small differences matter.
  • Use lying down in a clear, padded space to prevent injury during loss of body control.
  • Screen out heart conditions and psychiatric vulnerability beforehand, and be honest with facilitators about your health and medications.
  • Have someone ready to monitor breathing and call emergency services if needed.

Cultural & spiritual context

5-MeO-DMT's cultural story is more recent and more contested than ayahuasca's. While the compound occurs in Anadenanthera snuffs that have a long history in South America, the now-popular practice of smoking vaporised Sonoran Desert toad secretion is largely a late-twentieth-century development rather than an ancient tradition. Its rapid spread through retreats and underground facilitators has raised two pressing concerns: the conservation of the Sonoran Desert toad, which is threatened by over-harvesting, and the safety of powerful sessions run outside any medical framework. Many harm-reduction and conservation advocates encourage the use of synthetic 5-MeO-DMT instead of toad-derived material.

Legal Status

Laws vary widely by country and change frequently, so we don't track legal status here to avoid showing outdated information.

Check current worldwide legal status on Psychedelic Alpha

Frequently asked questions

How is 5-MeO-DMT different from DMT?

Although both are tryptamines, 5-MeO-DMT has a different receptor profile (notably high 5-HT1A activity) and is several times more potent by weight. Rather than the vivid visuals and 'entity' encounters often reported with DMT, it tends to produce a sudden, overwhelming dissolution of the self and a sense of total oneness.

Is the toad endangered?

The Sonoran Desert toad (Incilius alvarius) is under pressure from over-harvesting for its venom. For both conservation and safety reasons — toad secretion varies widely in potency — many harm-reduction and conservation advocates recommend using carefully measured synthetic 5-MeO-DMT instead.

Is it dangerous to combine 5-MeO-DMT with antidepressants or MAOIs?

Yes, this is the most important safety issue. MAO inhibitors (including ayahuasca-type harmala alkaloids) dramatically intensify and prolong its effects and have been implicated in deaths, while SSRIs and other serotonergic drugs raise the risk of serotonin syndrome. These combinations should be avoided entirely.

Is 5-MeO-DMT addictive?

No. Like other serotonergic psychedelics, it does not cause physical dependence or compulsive use. Its risks come from its acute physical and psychological intensity and from drug interactions, not from addiction.

Does 5-MeO-DMT have an ancient ceremonial tradition?

Not in the way ayahuasca does. The compound appears in some historical South American snuffs, but the now-popular practice of smoking vaporised toad secretion is largely a modern, late-twentieth-century development rather than a documented ancient ceremony.

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References & further reading

  • Uthaug, M. V., Lancelotta, R., van Oorsouw, K., et al. (2019). A single inhalation of vapor from dried toad secretion containing 5-methoxy-N,N-dimethyltryptamine (5-MeO-DMT) in a naturalistic setting is related to sustained enhancement of satisfaction with life, mindfulness-related capacities, and a decrement of psychopathological symptoms. Psychopharmacology, 236(9), 2653–2666. https://doi.org/10.1007/s00213-019-05236-w
  • Davis, A. K., So, S., Lancelotta, R., Barsuglia, J. P., & Griffiths, R. R. (2019). 5-methoxy-N,N-dimethyltryptamine (5-MeO-DMT) used in a naturalistic group setting is associated with unintended improvements in depression and anxiety. The American Journal of Drug and Alcohol Abuse, 45(2), 161–169. https://doi.org/10.1080/00952990.2018.1545024
  • Nichols, D. E. (2016). Psychedelics. Pharmacological Reviews, 68(2), 264–355. https://doi.org/10.1124/pr.115.011478
  • National Institute on Drug Abuse (NIDA). Psychedelic and Dissociative Drugs. https://nida.nih.gov/research-topics/psychedelic-dissociative-drugs
  • European Monitoring Centre for Drugs and Drug Addiction (EMCDDA). Drug profiles. https://www.emcdda.europa.eu/publications/drug-profiles_en
  • Erowid. 5-MeO-DMT Vault. https://www.erowid.org/chemicals/5meo_dmt/
  • DanceSafe. https://dancesafe.org/drug-information/
  • TripSit. Drug combinations chart. https://wiki.tripsit.me/wiki/Drug_combinations

About this article

Written by:
PE
Psymerge Editorial Team
Last updated June 4, 2026