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

    4-FMA

    Aliases: 4-fluromethamphetamine, 4fma

    Categories

    Psychedelic Stimulant Empathogen Research-chemical
    4-FMA structure

    Summary PsychonautWiki

    4-Fluoromethamphetamine (also known as 4-FMA) is a lesser-known novel stimulant-entactogen substance of the amphetamine class. 4-FMA is chemically related to 4-FA and methamphetamine. Little is known about its pharmacology, but it likely produces its effects by increasing levels of dopamine, norepinephrine, and serotonin in the brain.

    Dose Information TripSit PsychonautWiki

    ROA Light Common Strong Heavy
    Oral 25-50mg 50-75mg 100-125mg 125mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects TripSit PsychonautWiki

    ROA Onset Comeup Peak Offset After Effects Total
    Oral 18-42 min 18-42 min 2-5 hrs 1-2 hrs 3-12 hrs 180-0 min

    Tolerance

    Build-up develops over days to weeks of regular use
    Reset 3–7 days for acute; 1–3 weeks for full reset
    Cross-tolerance
    Amphetamine Methamphetamine Lisdexamfetamine 2-FA 2-FMA 3-FA 4-FA Methylphenidate

    Effects TripSit PsychonautWiki

    Positive
    • Increased energy/alertness
    • Physical euphoria
    • Bronchodilation
    • Stimulation
    Negative
    • Weight loss
    • Sweating
    • Bruxism
    • Headache
    • Vasoconstriction
    • Temporary erectile dysfunction
    • Pupil dilation
    • Increased heart rate
    • Increased perspiration
    • Abnormal heartbeat
    • Teeth grinding
    • Tremor
    Neutral
    • Decreased need for sleep
    • Decreased appetite
    • Disturbed sleep patterns
    • Itchiness
    • Restless legs
    • Muscle contractions
    • Increased bodily temperature
    • Stamina intensification
    Positive
    • Euphoria
    • Increased sociability
    • Mood lift
    • Empathy, affection and sociability enhancement
    • Motivation enhancement
    • Novelty enhancement
    • Analysis enhancement
    • Cognitive euphoria
    • Wakefulness
    • Immersion intensification
    Negative
    • Aggressiveness
    • Dizziness
    • Delusion
    • Depression
    • Anxiety
    • Paranoia
    • Irritability
    • Thought deceleration
    • Depersonalization
    • Compulsive redosing
    • Cognitive fatigue
    • Suicidal ideation
    • Psychosis
    • Motivation depression
    Neutral
    • Excessive talking
    • Moodiness
    • Thought acceleration
    • Ego inflation
    • Time distortion
    • Focus intensification
    Positive
    • Increased libido
    • Bodily control enhancement
    • Increased music appreciation
    Negative
    • Dehydration
    • Disinhibition
    • Appetite suppression
    • Orgasm depression
    Neutral
    • Increased sexuality
    • Visual and auditory hallucinations
    • Vibrating vision
    • Tactile intensification

    Combinations TripSit

    Helpful Links

    📘 Experience Reports 📖 TripSit 📖 PsychonautWiki