Skip to main content
Psychedex
Article

2C-T-7 Facts

Psychedelic; Substituted phenethylamine; Serotonin 2A receptor agonist

Description

2C-T-7 (2,5-dimethoxy-4-(n)-propylthiophenethylamine) — Beautiful, Blue Mystic, T7 — is a synthetic psychedelic of the phenethylamine class. It activates serotonin receptors in the brain, loosening normal sensory filtering and producing the visual and introspective effects characteristic of classical psychedelics.

Subjective effects include geometric visual patterns, brightened colors, empathogenic warmth, prosocial openness, and introspective depth.[1][2] The experience has a crystalline warmth that Shulgin considered distinct from Mescaline and LSD — closer to emotional opening than raw visual intensity.[3]

2C-T-7 produces no physical dependence and rapid tolerance limits compulsive use[4] — but three deaths are documented, all under high-risk conditions.[5] The main danger is combination: it activates serotonin receptors and slows serotonin breakdown simultaneously, so mixing it with MDMA or monoamine oxidase inhibitors can cause life-threatening overheating.[6]

Dose and durationby route · individual sensitivity varies

Oral(mg)
Threshold< 3 mgLight5 – 15 mgCommon15 – 25 mgStrong25 – 40 mgHeavy40+ mg

Starts in 30 – 90 minLasts 8 – 15 hoursAfter-effects 4 – 12 hours

Body and dependence

Acute toxicity
Moderate
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
DOI; 2C-B; mescaline; LSD; psilocybin

Effectslikely at a common dose

Perception
Color enhancement; Visual drifting; Tracers; Color alteration; Environmental patterning; Geometry; Holotropic state; Music enhancement; Visual breathing; +27 possible, including Spatial disorientation, Vestibular distortion, Visual haze / noise
Body
Stimulation; Nausea; Pupil dilation; Wakefulness; Body high; +35 possible, including Muscle tension, Motor control impairment, Temperature dysregulation
Thinking
Pattern recognition enhancement; Novelty enhancement; Immersion enhancement; Conceptual thinking; Aesthetic enhancement; +31 possible, including Decision impairment, Memory suppression, Thought loops
Feeling
Emotional enhancement; +9 possible, including Emotional lability, Anxiety, Dysphoria
Self
none likely · 12 possible, including Depersonalization, Derealization, Communication suppression
Time
Time alteration; +4 possible, including Temporal disorientation
Transpersonal
none likely · 1 possible
Awareness
none likely · 4 possible

Who shouldn't take it

Absolute
Psychotic disorders; Bipolar disorder; Pregnancy and breastfeeding; MAO inhibitor medications; MDMA
Relative
Cardiovascular disease; Epilepsy; Hepatic impairment; Adolescence; Serotonergic medications

Combinations60 recorded

Lethal (6)
Amphetamines; MDMA, Amphetamines; MDMA, MDA; Psychedelics; SNRIs; Stimulants
Dangerous (29)
5-HTP, Tryptophan; Alpha-2 adrenergic receptor antagonist; Ephedrine, Pseudoephedrine; Local anesthetics; NRIs; Opioids; Antihistamines; Antipsychotics; Benzodiazepines, Barbiturates; Buspirone; Caffeine; Cannabis; Clonidine, Guanfacine; Dopamine agonists; DXM; GHB, Baclofen; GHB, GBL; Ibogaine; Ketamine, DXM, PCP; L-Tyrosine; Lithium; Naltrexone; NDRIs (Wellbutrin); NSAIDs; and 5 more, see full page
Caution (21)
See full page: psychedex.org/substances/2c-t-7
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]
    ^Hardison C (2000) An Amateur Qualitative Study of 48 2C-T-7 Subjective Bioassays Link
  2. [2]
    ^Erowid (2000) 2C-T-7 Vault: Erowid Effects Survey Results Link
  3. [3]
    ^Shulgin (1991) PiHKAL: A Chemical Love Story
  4. [4]
    ^Smith DA, Bailey JM, Williams D, Fantegrossi WE (2014) Tolerance and cross-tolerance to head twitch behavior elicited by phenethylamine- and tryptamine-derived hallucinogens in mice. — The Journal of pharmacology and experimental therapeutics doi:10.1124/jpet.114.219337
  5. [5]
    ^Schifano F, Deluca P, Agosti L, Martinotti G, Corkery JM, et al. (2005) New trends in the cyber and street market of recreational drugs? The case of 2C-T-7 ('Blue Mystic') — Journal of Psychopharmacology PMID:16272191
  6. [6]
    ^Wagmann L, Brandt SD, Stratford A, Maurer HH, Meyer MR (2019) Interactions of phenethylamine-derived psychoactive substances of the 2C-series with human monoamine oxidases — Drug Testing and Analysis doi:10.1002/dta.2494
Print version
Report an issue