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    🧪 This is a research chemical with limited data on its long-term health effects, toxicity profile, and safe dosage ranges.

    3-FEA

    Stimulant Research-chemical

    Summary TheDrug.Wiki TripSit PsychonautWiki

    3-Fluoroethamphetamine (also known as 3-FEA) is a novel ring-substituted amphetamine compound that produces a mixture of entactogenic and stimulant effects when administered. 3-FEA is structurally related to a series of designer fluorinated substituted amphetamines that originally included compounds such as 2-FA, 2-FMA, 3-FA, 4-FMA, 4-FA. Like its parent compound 3-FA, the pharmacological, toxicological, and subjective effects of 3-FEA in humans have yet to be mapped out in detail.

    Dose Information TheDrug.Wiki TripSit PsychonautWiki

    ROA Light Common Strong Heavy
    Oral 20-35mg 35-70mg 70-90mg 90mg+
    Insufflated 20-35mg 35-60mg 50-60mg 60mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects TheDrug.Wiki TripSit PsychonautWiki

    ROA Onset Comeup Peak Offset After Effects Total
    Oral 20-60 min 30-60 min 1.5-2.5 hrs 2-3 hrs 6-12 hrs 4.3-7.5 hrs
    Insufflated 5-15 min 5-10 min 30-60 min 30-60 min 1-3 hrs 1.2-2.4 hrs

    Effect Profile

    5 reports

    Scores (1–10) curated from multiple sources:

    • Effect keyword matching from PsychonautWiki catalog
    • Weighted by importance: core (×3), major (×2), minor (×1)

    Full methodology

    Empathogen 5.1
    Moderate+ 5/10

    Strong sensory enhancement with moderate stimulation and euphoria, low empathy

    Empathy / Social Openness ×3
    3
    empathy, affection, and sociability enhancement
    Euphoria / Mood Elevation ×2
    6
    physical euphoria cognitive euphoria
    Stimulation ×1
    7
    stimulation wakefulness teeth grinding increased heart rate
    Sensory Enhancement ×1
    8
    tactile enhancement increased libido
    Stimulant 4.4
    Moderate 4/10

    Strong anxiety/jitters with moderate euphoria, mild stimulation, low focus

    Stimulation / Energy ×3
    5
    stimulation wakefulness
    Euphoria / Mood Lift ×2
    7
    physical euphoria cognitive euphoria motivation enhancement
    Focus / Productivity ×2
    3
    motivation enhancement thought acceleration
    ⚠ Anxiety / Jitters ×1
    10
    anxiety teeth grinding increased heart rate vasoconstriction
    Based on reports from:
    Erowid Experience Reports PsychonautWiki 3-FEA
    View methodology →

    Tolerance

    Build-up develops over days to weeks of regular use
    Reset 3–7 days for acute; 1–3 weeks for full reset

    Cross-Tolerances

    amphetamines
    60%
    other fluoroamphetamines (e.g., 3-FA, 4-FA)
    60%
    serotonergic releasers (e.g., MDMA)
    40%

    Effects Erowid

    Aggregated from 5 Erowid experience reports

    Positive Effects 2

    Stimulation 100.0% 70%
    Euphoria 60.0% 70%

    Adverse Effects 0

    Combinations TripSit

    3-FEA's nerd page Pharmacology, chemical data, effect profiles, and more
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    Helpful Links

    📘 Experience Reports 📖 TheDrug.Wiki 📖 TripSit 📖 PsychonautWiki