MDAI Facts
Entactogen;
Dose and durationby route · individual sensitivity varies
Oral(mg)
Threshold< 40 mgLight75 – 100 mgCommon100 – 175 mgStrong175 – 250 mgHeavy250+ mg
Starts in 20 – 60 minLasts 3 – 5 hoursAfter-effects 4 – 24 hours
Body and dependence
- Acute toxicity
- Moderate
- Chronic toxicity
- Moderate
- Physical dependence
- None
- Psychological dependence
- Low
- Withdrawal
- None recorded
- Compulsive redosing
- Low
Tolerance
- Builds
- Rapid
- Fully resets after
- 14 days
- Carries over to
- MDMA;
MDA; 6-APB; 5-MAPB; 5-APB; methylone
Effectslikely at a common dose
- Perception
- Music enhancement;
+7 possible, including Visual haze / noise - Body
- Pupil dilation;
Body high; +21 possible, including Temperature dysregulation, Insomnia, Bruxism - Thinking
- none likely · 15 possible, including Cognitive impairment, Compulsive redosing urge, Decision impairment
- Feeling
- Empathy enhancement;
+7 possible, including Depression, Anhedonia - Self
- Sociability enhancement;
Social connection; +4 possible - Awareness
- none likely · 2 possible
Who shouldn't take it
Absolute
Pregnancy and lactation; MAOI use; Concurrent serotonergic drug use
Relative
Hypertension; Epilepsy; Psychotic disorders; Hepatic impairment
Combinations61 recorded
Lethal (2)
MAOIs; Tramadol
Dangerous (32)
Amphetamines; Atypical antipsychotics; Dopamine agonists; Lithium; Local anesthetics; MDMA, Amphetamines; NRIs; Opioids; Psychedelics; SNRIs; SSRIs; Stimulants; 5-HTP, Tryptophan; Alpha-2 adrenergic receptor antagonist; Anticholinergics; Antihistamines; Antipsychotics; Buspirone; Caffeine; Clonidine, Guanfacine; DXM; Ephedrine, Pseudoephedrine; GHB, Baclofen; GHB, GBL; and 8 more, see full page
Caution (23)
See full page: psychedex.org/substances/mdai
Not graded (4)
Not listed never means safe.
Seek help immediately if
- Overheating / very high body temperature — heavy sweating, then hot dry skin (the leading cause of MDMA deaths, worse when dancing in hot venues)
- Muscle rigidity, jaw clenching, tremor, or twitching (possible serotonin syndrome)
- Fast, pounding heartbeat; chest pain
- Agitation, confusion; seizures
- Hyponatremia (water intoxication) — headache, confusion, drowsiness, vomiting, and seizures from drinking too much water
- Nausea/vomiting; collapse or unconsciousness
What to do
- Move them somewhere cool and help them cool down — overheating is the main danger
- Sip water to stay hydrated but DO NOT overdrink — roughly a cup (250 ml) per hour if active; too much water can be deadly (hyponatremia)
- Get them to rest and stop dancing
- For overheating, seizures, chest pain, muscle rigidity/tremor, confusion, or unresponsiveness, call emergency services
- Recovery position if drowsy or vomiting; stay with them
- Be ready to give rescue breaths / CPR
Most resolve with cooling, rest, sensible hydration, and time. The life-threatening dangers are hyperthermia, serotonin syndrome, and hyponatremia (too much water) — each a medical emergency, not something to wait out.
988 Suicide & Crisis LifelineFireside Project: 62-FIRESIDE
psychedex.org/substances/mdai · Version r1 · Not medical adviceValues as of