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Eutylone Facts

Stimulant; Substituted cathinone; Monoamine releasing agent

Description

Eutylone (N-ethylbutylone) is a synthetic stimulant of the cathinone class. It blocks dopamine and norepinephrine reuptake while partially releasing serotonin, amplifying reward signaling with mild mood-brightening.[1]

Subjective effects include stimulation, euphoria, increased energy, mild empathogenic warmth, and social disinhibition.[2] The experience is more stimulant-forward than MDMA — an energized, buzzing state with modest prosocial warmth rather than full emotional immersion.

Animal studies confirm rewarding properties, and one death has been attributed to eutylone alone — no lethal threshold is established.[3] The dominant hazard is misrepresentation: eutylone is frequently sold as MDMA, exposing users to unknown doses, and overheating is the primary life-threatening mechanism.[4]

Dose and durationby route · individual sensitivity varies

Oral(mg)
Threshold< 50 mgLight75 – 100 mgCommon100 – 200 mgStrong200 – 300 mgHeavy300+ mg

Starts in 15 – 45 minLasts 2 – 4 hoursAfter-effects 2 – 6 hours

Body and dependence

Acute toxicity
High
Chronic toxicity
Moderate
Physical dependence
Low
Psychological dependence
Moderate
Withdrawal
Mild
Compulsive redosing
High

Tolerance

Builds
Moderate
Fully resets after
14 days
Carries over to
methylone; mephedrone; MDPV; cocaine; amphetamine

Effectslikely at a common dose

Perception
Dreaming suppression; +5 possible
Body
Appetite suppression; Dry mouth; Insomnia; Pupil dilation; Restlessness; Stimulation; Wakefulness; +20 possible, including Excessive sweating, Heart rate perception changes, Vasoconstriction
Thinking
Cognitive euphoria; Thought acceleration; +24 possible, including Compulsive redosing urge, Cognitive impairment, Decision impairment
Feeling
Euphoria; +10 possible, including Anxiety, Anhedonia, Depression
Self
none likely · 10 possible, including Craving, Compulsive repetitive behavior, Ego inflation
Time
none likely · 2 possible
Awareness
none likely · 2 possible

Who shouldn't take it

Absolute
Cardiovascular disease; Seizure disorders; Pregnancy; Concurrent MAOI therapy
Relative
Psychotic spectrum disorders; Hepatic impairment; Renal impairment; Hyperthermia-prone environments

Combinations61 recorded

Lethal (2)
Ibogaine; MAOIs
Dangerous (29)
Alpha-2 adrenergic receptor antagonist; Amphetamines; Benzodiazepines, Barbiturates; Ephedrine, Pseudoephedrine; GHB, Baclofen; GHB, GBL; Local anesthetics; MDMA, Amphetamines; MDMA, MDA; NDRIs (Wellbutrin); NRIs; Opioids; SSRIs; Stimulants; 5-HTP, Tryptophan; Anticholinergics; Antipsychotics; Buspirone; Caffeine; Dopamine agonists; DXM; Ketamine, DXM, PCP; Lithium; NSAIDs; and 5 more, see full page
Caution (23)
See full page: psychedex.org/substances/eutylone
Not graded (7)
Not listed never means safe.

Seek help immediately if

  • Chest pain; racing, pounding, or irregular heartbeat
  • Very high body temperature; heavy sweating; hot, flushed skin
  • Severe agitation, paranoia, panic, or confusion
  • Severe headache; muscle rigidity or twitching
  • Seizures
  • Signs of stroke — face drooping, one-sided weakness, slurred speech
  • Difficulty breathing; collapse or unconsciousness

What to do

  1. Call emergency services for chest pain, overheating, seizure, or unresponsiveness
  2. Move them to a cool, quiet place and reduce stimulation
  3. Cool the body — remove excess clothing, apply cool damp cloths, fan them
  4. Keep them calm; reassure — panic worsens the cardiovascular strain
  5. If seizing, protect from injury (don't restrain); recovery position afterward
  6. Monitor breathing and be ready to give rescue breaths / CPR

Most stimulant overdoses settle with cooling, a calm environment, and time. The medical danger is hyperthermia, cardiac events (arrhythmia, heart attack, stroke), and seizures — get help immediately if any appear.

988 Suicide & Crisis LifelineFireside Project: 62-FIRESIDE

Version r1 · Not medical advice

References

  1. [1]
    ^Glatfelter GC, Walther D, Evans-Brown M, Baumann MH (2021) Eutylone and Its Structural Isomers Interact with Monoamine Transporters and Induce Locomotor Stimulation — ACS Chemical Neuroscience doi:10.1021/acschemneuro.0c00797
  2. [2]
    ^World Health Organization ECDD (2021) WHO Expert Committee on Drug Dependence 44th Report: Critical Review of Eutylone Link
  3. [3]
    ^Nakamura M, Takaso M, Takeda A, Hitosugi M (2022) A fatal case of intoxication from a single use of eutylone: Clinical symptoms and quantitative analysis results — Legal Medicine (Tokyo) doi:10.1016/j.legalmed.2022.102085
  4. [4]
    ^Krotulski AJ, Papsun DM, Chronister CW, Homan J, Crosby MM, Hoyer J, Goldberger BA, Logan BK (2021) Eutylone Intoxications—An Emerging Synthetic Stimulant in Forensic Investigations — Journal of Analytical Toxicology doi:10.1093/jat/bkaa113
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