Home
    Disclaimer

    4-fluorobuphedrone Well-documented
    Well-documented
    Multiple authoritative sources agree on dosing and effects.
    • 2 corroborating sources
    • 2 ROAs with full dose ladders
    • duration data present
    • 18 combo interactions documented

    Stimulant

    Summary

    4-fluorobuphedrone is a stimulant cathinone. Reported effects include euphoria, color enhancement, time distortion, and wakefulness. Limited data is available on its dosage and safety profile.

    Dose Information Drugs.Wiki

    Dose basis. Dose ranges are based on user reports, not clinical data. Because unregulated cathinone powders vary in purity, always weigh with a 0.001 g (milligram) scale and consider volumetric dosing to improve accuracy with small amounts. Start low and allow at least 90–120 minutes before considering any redose to avoid stacked peaks. Evidence-informed general HR guidance from TripSit supports accurate measurement and volumetric dosing for potent compounds. Intranasal use has faster onset and a higher tendency toward compulsive redosing but carries greater nasal/mucosal harm. Use your own sterile straw, crush finely, switch nostrils, and rinse with sterile saline before and after. Intranasal cathinone HR practices and risks are documented by peer HR orgs. (Dose figures and this note are from Drugs.Wiki.)

    ROA Light Common Strong Heavy
    Oral 30-60mg 60-120mg 120-180mg 180mg+
    Insufflated 15-30mg 30-70mg 70-120mg 120mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects Drugs.Wiki

    ROA Onset Peak Offset After Effects Total
    Oral 15-30 min 1-2 hrs 1-2 hrs 2-6 hrs 3-5 hrs
    Insufflated 2-5 min 30-90 min 30-60 min 2-6 hrs 2-4 hrs

    Effect Profile

    class estimate

    Scores (1–10) curated from multiple sources:

    • Effect keyword matching from PsychonautWiki catalog
    • No reports exist for this substance. Its effect list is the one shared by 13 other substances of the same class, so the scores below describe the class, not this compound.
    • Weighted by importance: core (×3), major (×2), minor (×1)

    Full methodology

    Stimulant 6.5
    Strong 6/10

    Strong euphoria and anxiety/jitters with moderate focus and stimulation

    Stimulation / Energy ×3
    6
    stimulation wakefulness alertness enhancement
    Euphoria / Mood Lift ×2
    10
    physical euphoria euphoria cognitive euphoria motivation enhancement
    Focus / Productivity ×2
    7
    focus enhancement motivation enhancement thought acceleration
    ⚠ Anxiety / Jitters ×1
    10
    anxiety increased heart rate teeth grinding vasoconstriction
    View methodology →

    Add to PsychonautWiki Journal

    The PsychonautWiki Journal logging app doesn't include every substance. To track 4-fluorobuphedrone there, start adding an ingestion, search for the name, and choose to add it as a custom substance. Paste these values:

    ⬇ Download import file Import this file as custom substances and you get "4-fluorobuphedrone (Substance Search)" with every route's full dose ladder and timeline, no typing. Works on iOS and Android (v15+); the format is confirmed by the app's developer. The manual values below work for older versions.
    Name
    4-fluorobuphedrone
    Unit
    mg
    Description 
    4-fluorobuphedrone
Source: SubstanceSearch (substancesearch.com)

Oral dose (mg): threshold 20 · light 30-60 · common 60-120 · strong 120-180 · heavy 180+
Insufflated dose (mg): threshold 10 · light 15-30 · common 30-70 · strong 70-120 · heavy 120+

Oral duration: onset 15-30m · peak 1-2h · offset 1-2h · total 3-5h · after-effects 2-6h
Insufflated duration: onset 2-5m · peak 0.5-1.5h · offset 0.5-1h · total 2-4h · after-effects 2-6h

Note: ranges are harm-reduction guidance, not a prescription. Start low, go slow, and test your substances.

    Tip: for quicker logging you can also add a Custom Unit in the app, e.g. common dose ~ 90 mg (Oral).

    The app keeps custom substances simple, so the full dose ranges live in the description text above. Ranges are harm-reduction guidance, not a prescription.

    Tolerance

    Build-up develops rapidly, often within a single session; compulsive redosing common
    Reset a few days for acute tolerance

    Tolerance Decay

    Full tolerance 2d Half tolerance 7d Baseline ~14d

    Anecdotal stimulant patterns suggest rapid tolerance accrual over 1–3 days with partial reversal over 1–2 weeks of abstinence. Avoid back‑to‑back days; schedule at least 7–14 days between sessions to reduce escalation and comedown severity.

    Cross-Tolerances

    other cathinones (mephedrone, flephedrone, buphedrone)
    70%
    amphetamine‑type stimulants
    40%

    Effects

    Positive
    • Stimulation
    • Physical euphoria
    Negative
    • Increased heart rate
    • Vasoconstriction
    • Insomnia
    • Teeth grinding
    • Pupil dilation
    • Nausea
    • Increased perspiration
    Neutral
    • Decreased appetite
    Positive
    • Alertness enhancement
    • Euphoria
    • Wakefulness
    • Motivation enhancement
    • Cognitive euphoria
    • Focus enhancement
    Negative
    • Anxiety
    Neutral
    • Talkativeness
    • Time distortion
    • Thought acceleration
    Positive
    • Increased music appreciation
    • Tactile enhancement
    • Increased libido
    • Color enhancement
    • Enhanced tactile sensation
    Negative
    • Light sensitivity
    • Appetite suppression
    • Dehydration
    • Disinhibition
    Neutral
    • Drifting

    Combinations

    Cross-Check 4-fluorobuphedrone with another substance

    4-fluorobuphedrone's nerd page Pharmacology, chemical data, effect profiles, and more
    →

    Helpful Links

    📘 Experience Reports 📖 PsychonautWiki