TMA-2 Facts
Psychedelic;
Description
TMA-2 (2,4,5-trimethoxyamphetamine) is a synthetic psychedelic of the phenethylamine class. It activates serotonin receptors, producing the perceptual and cognitive shifts of a classical psychedelic.[1]
Subjective effects include thought connectivity, conceptual thinking, stimulation, restlessness, and mild perceptual shifts.[2] The experience leans toward cognitive and physical activation rather than visual richness — mescaline-like in character, but with stronger body load and less color enhancement.[3]
TMA-2 does not produce physical dependence, and no toxic effects or fatalities have been documented.[4] The primary risk is psychological — unpredictable dose response, high anxiety propensity, and a prolonged duration that extends vulnerability to acute distress.
Dose and durationby route · individual sensitivity varies
Starts in 20 – 120 minLasts 8 – 12 hoursAfter-effects 4 – 24 hours
Body and dependence
- Acute toxicity
- Low
- Chronic toxicity
- Low
- Physical dependence
- None
- Psychological dependence
- Negligible
- Withdrawal
- None recorded
- Compulsive redosing
- Negligible
Tolerance
- Builds
- Rapid
- Fully resets after
- 7 days
- Carries over to
- LSD;
psilocybin; mescaline; DOM; DOI; DOB; 2C-B
Effectslikely at a common dose
- Perception
- Color alteration;
Visual drifting; Tracers; Color enhancement; Brightness alteration; Environmental patterning; Geometry; Light sensitivity; Visual breathing; +24 possible, including Spatial disorientation, Visual haze / noise, Vestibular distortion - Body
- Wakefulness;
Spontaneous body sensations; Pupil dilation; Stimulation; Body scan awareness; +27 possible, including Nausea, Vasoconstriction, Insomnia - Thinking
- Novelty enhancement;
Conceptual thinking; Thought connectivity; Pattern recognition enhancement; Aesthetic enhancement; Openness enhancement; +25 possible, including Memory suppression, Suggestibility enhancement, Thought loops - Feeling
- Emotional enhancement;
+9 possible, including Emotional lability, Anxiety, Paranoia - Self
- none likely · 10 possible, including Derealization, Depersonalization, Ego inflation
- Time
- Time alteration;
+3 possible, including Temporal disorientation - Transpersonal
- none likely · 1 possible
- Awareness
- none likely · 4 possible
Who shouldn't take it
Combinations60 recorded
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
- Stay calm and reassure — remind them they took a drug and the effect will pass
- Move to a calm, quiet, safe space with low light; reduce noise and sensory input
- Keep them from harm — they may act on fear or confusion; stay with them, don't leave them alone
- Talk them down gently; don't grab or restrain unless they're in danger
- For the medical signs above (overheating, seizure, chest pain, vasoconstriction, unresponsive) call emergency services
- 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
References
- [1]^Kolaczynska KE, Luethi D, Trachsel D, Hoener MC, Liechti ME (2019) Receptor Interaction Profiles of 4-Alkoxy-Substituted 2,5-Dimethoxyphenethylamines and Related Amphetamines. — Frontiers in Pharmacology doi:10.3389/fphar.2019.01423
- [2]
- [3]
- [4]