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DMT Facts

Psychedelic; Substituted tryptamine; Serotonin 2A receptor agonist

Description

DMT (N,N-dimethyltryptamine) — the spirit molecule, dimitri — is a naturally-occurring psychedelic of the tryptamine class. It activates serotonin receptors, disrupting the brain's normal sensory filtering and producing the visual and perceptual intensity characteristic of classical psychedelics.[1]

Subjective effects include geometric visual patterns, complete replacement of ordinary reality, entity encounters, ego dissolution, and profound time alteration. The experience is often described as "more real than real" — a total immersion beginning within seconds, with a resemblance to near-death experiences unique among classical psychedelics.[2]

DMT produces no physical dependence, and no human fatality has been attributed to it alone.[3] The main danger arises with ayahuasca: combining the brew's monoamine oxidase-blocking compounds with antidepressants or other serotonin-raising drugs can cause life-threatening overheating and muscle rigidity.[4][5]

Dose and durationby route · individual sensitivity varies

Oral(mg)
Threshold< 15 mgLight20 – 30 mgCommon30 – 60 mgStrong60 – 100 mgHeavy100+ mg

Starts in 20 – 45 minLasts 3 – 5 hoursAfter-effects 1 – 4 hours

Body and dependence

Acute toxicity
Low
Chronic toxicity
Negligible
Physical dependence
None
Psychological dependence
Negligible
Withdrawal
None recorded
Compulsive redosing
Negligible

Tolerance

Builds
Rapid
Fully resets after
2 hours
Carries over to
LSD; psilocybin; mescaline; 5-MeO-DMT

Effectslikely at a common dose

Perception
Color enhancement; Visual drifting; Symmetrical texture repetition; Spatial disorientation; Environmental patterning; Geometry; Color alteration; Ganzfeld effect; Holotropic state; Visual morphing; +24 possible, including Vestibular distortion, Visual haze / noise
Body
Pupil dilation; Spontaneous body sensations; Body high; Vibrations / buzzing; +25 possible, including Dizziness, Motor control impairment, Abnormal heartbeat
Thinking
Conceptual thinking; Novelty enhancement; Thought acceleration; Thought connectivity; +27 possible, including Memory suppression, Cognitive impairment, Confusion
Feeling
none likely · 9 possible, including Emotional lability, Anxiety, Dysphoria
Self
Derealization; +7 possible, including Depersonalization, Communication suppression, Social disconnection
Time
Time alteration; +4 possible, including Temporal disorientation
Transpersonal
none likely · 1 possible
Awareness
none likely · 4 possible

Who shouldn't take it

Absolute
Bipolar disorder; Psychotic disorders; Pregnancy and breastfeeding; Concurrent serotonergic medications with ayahuasca
Relative
Cardiovascular disease; Seizure disorders

Combinations61 recorded

Lethal (1)
MAOIs
Dangerous (21)
Antihistamines; Alpha-2 adrenergic receptor antagonist; Clonidine, Guanfacine; Dopamine agonists; DXM; GHB, Baclofen; GHB, GBL; Ibogaine; Ketamine, DXM, PCP; Lithium; Local anesthetics; MDMA, Amphetamines; MDMA, MDA; NDRIs (Wellbutrin); NRIs; Psychedelics; Salvia, Ibogaine; SNRIs; SSRIs; Stimulants; Synthetic cannabinoids
Caution (35)
See full page: psychedex.org/substances/dmt
Not graded (4)
Not listed never means safe.

Seek help immediately if

Most difficulty is psychological (intense fear, panic, confusion) and passes with calm support — the signs below mean seek emergency help:

  • Very high body temperature; hot, dry skin
  • Seizures
  • Chest pain; fast or irregular heartbeat
  • Severe muscle rigidity, tremor, or twitching (possible serotonin syndrome)
  • Cold, pale, or blue fingers/toes — severe vasoconstriction (notably NBOMe / DOx)
  • Persistent vomiting; unconsciousness; uncontrollable agitation or risk of self-harm

What to do

  1. Stay calm and reassure — remind them they took a drug and the effect will pass
  2. Move to a calm, quiet, safe space with low light; reduce noise and sensory input
  3. Keep them from harm — they may act on fear or confusion; stay with them, don't leave them alone
  4. Talk them down gently; don't grab or restrain unless they're in danger
  5. For the medical signs above (overheating, seizure, chest pain, vasoconstriction, unresponsive) call emergency services
  6. If overheating, cool the body; be ready to give rescue breaths / CPR

The experience is time-limited and usually resolves with calm reassurance in a safe setting — psychological first aid, not medication. Serious physical harm is uncommon for classic psychedelics (LSD, psilocybin) but real for some potent phenethylamines (NBOMe, DOx), where hyperthermia, seizures, and vasoconstriction warrant emergency care.

988 Suicide & Crisis LifelineFireside Project: 62-FIRESIDE

Version r1 · Not medical advice

References

  1. [1]
    ^Rickli A, Moning OD, Hoener MC, Liechti ME (2016) Receptor interaction profiles of novel psychoactive tryptamines compared with classic hallucinogens — European Neuropsychopharmacology doi:10.1016/j.euroneuro.2016.05.001
  2. [2]
    ^Lawrence DW, Carhart-Harris R, Griffiths R, Timmermann C (2022) Phenomenology and content of the inhaled N,N-dimethyltryptamine (N,N-DMT) experience — Scientific Reports doi:10.1038/s41598-022-11999-8
  3. [3]
    ^James E, Erritzoe D, Benway T, Joel Z, Timmermann C (2024) Safety, tolerability, pharmacodynamic and wellbeing effects of SPL026 (dimethyltryptamine fumarate) in healthy participants: a randomized, placebo-controlled phase 1 trial — Frontiers in Psychiatry doi:10.3389/fpsyt.2023.1305796
  4. [4]
    ^Brito-da-Costa AM, Dias-da-Silva D, Gomes NGM, Dinis-Oliveira RJ, Madureira-Carvalho A (2020) Toxicokinetics and Toxicodynamics of Ayahuasca Alkaloids N,N-Dimethyltryptamine (DMT), Harmine, Harmaline and Tetrahydroharmine: Clinical and Forensic Impact — Pharmaceuticals doi:10.3390/ph13110334
  5. [5]
    ^Ribeiro GSG, Paranhos BAPB, Dörr F, et al. (2026) Predicting drug-drug interactions between ayahuasca alkaloids and SSRIs using physiologically based pharmacokinetic modeling — Frontiers in Molecular Biosciences doi:10.3389/fmolb.2026.1768402
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