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    4-FA

    Aliases: 4-Fluoroamphetamine, 4fa, 4-fmp, 4-fluoroamphetamine

    Categories

    stimulant research-chemical habit-forming empathogen common

    Summary

    An empathogen commonly used in place of MDMA, having a similar duration of empathogenic effects. This drug, however, has a longer stimulant "tail," during which effects are more like those of amphetamines. Not to be confused with 4-FMA, which has a similar potency, but is not particularly empathogenic.

    ⚠️ AVOID: Other stimulants, and depressants. MXE is also to be avoided (possibility of serotonin syndrome). See combo information for more.
    ⚠️ Insufflating does not appear to provide a better bioavailability than oral ingestion, and can cause damage to nasal cavity.

    Dose Information

    Onset, Duration & After-effects

    • Onset:
      • Oral: 30-90 minutes
    • Duration: 4-8 hours
    • After-effects: 1-24 hours

    Effects

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    Studies