Beta test rollout. This site is in community QA — please send feature requests, bug reports and data corrections on the Feedback page or on GitHub.

Home
    Disclaimer

    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
    • 29 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 source not identified

    Dose basis. Oral: Ranges are aggregated from user reports; significant batch-to-batch variability is possible. Always verify identity/purity with drug checking before dosing. Sublingual: 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
    Sources· no ladder identified

    Oral

    Dose ladder — source not identified

    Sublingual

    Dose ladder — source not identified

    Insufflated

    Dose ladder — source not identified

    Smoked

    Dose ladder — source not identified

    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 (0–10) 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 with strong anxiety/jitters, 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 →

    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
    Negative
    Neutral
    Positive
    Negative
    Neutral
    Positive
    Negative
    Neutral

    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
    →

    Helpful Links

    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.