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    4-fluoro-3-methyl-alpha-PVP Well-documented
    Well-documented
    Multiple authoritative sources agree on dosing and effects.
    • 2 corroborating sources
    • 4 ROAs with full dose ladders
    • duration data present
    • 18 combo interactions documented

    Stimulant

    Summary

    4-fluoro-3-methyl-alpha-PVP 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. Ranges are aggregated from user reports; significant batch-to-batch variability is possible. Always verify identity/purity with drug checking before dosing. Reported similar to oral but slightly faster onset; limited formal data. (Dose figures and this note are from Drugs.Wiki.)

    ROA Light Common Strong Heavy
    Oral 5-15mg 15-30mg 30-45mg 45mg+
    Sublingual 5-15mg 15-30mg 30-45mg 45mg+
    Insufflated 5-20mg 20-40mg 40-60mg 60mg+
    Smoked 3-10mg 10-15mg 15-20mg 20mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects Drugs.Wiki

    ROA Onset Peak Offset After Effects Total
    Oral 15-30 min 30-90 min 1-2 hrs 2-6 hrs 3-5 hrs
    Insufflated 5-10 min - 60 min 2-6 hrs 2-3 hrs
    Smoked <1-2 min 2-10 min 30-45 min 2-6 hrs 60-90 min

    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-fluoro-3-methyl-alpha-PVP 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-fluoro-3-methyl-alpha-PVP (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-fluoro-3-methyl-alpha-PVP
    Unit
    mg
    Description 
    4-fluoro-3-methyl-alpha-PVP
Source: SubstanceSearch (substancesearch.com)

Oral dose (mg): threshold 5 · light 5-15 · common 15-30 · strong 30-45 · heavy 45+
Sublingual dose (mg): threshold 5 · light 5-15 · common 15-30 · strong 30-45 · heavy 45+
Insufflated dose (mg): threshold 5 · light 5-20 · common 20-40 · strong 40-60 · heavy 60+
Smoked dose (mg): threshold 3 · light 3-10 · common 10-15 · strong 15-20 · heavy 20+

Oral duration: onset 15-30m · peak 0.5-1.5h · offset 1-2h · total 3-5h · after-effects 2-6h
Sublingual duration: after-effects 2-6h
Insufflated duration: onset 5-10m · offset 1h · total 2-3h · after-effects 2-6h
Smoked duration: onset <1-2m · peak 2-10m · offset 30-45m · total 1-1.5h · 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 ~ 22.5 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 1h Half tolerance 4d Baseline ~5d

    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-fluoro-3-methyl-alpha-PVP with another substance

    4-fluoro-3-methyl-alpha-PVP's nerd page Pharmacology, chemical data, effect profiles, and more
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    Helpful Links

    📘 Experience Reports 📖 PsychonautWiki