4F-PVP
4F-PVP (4'-fluoro-alpha-pyrrolidinopentiophenone) is a fluorinated analogue of alpha-PVP, a pyrrolidine synthetic cathinone sold as a research chemical. It is a potent dopamine reuptake inhibitor with strong compulsive potential. Human data is essentially absent and all information is anecdotal.
01 Overview
4F-PVP is a ring-fluorinated analogue of alpha-PVP, marketed as a legal-grey stimulant. Users report potent, long-lasting, focused stimulation nearly indistinguishable from alpha-PVP, with the same intense compulsion to redose.
As a PVP-series pyrrolidine cathinone, 4F-PVP carries a particularly high risk of compulsive redosing and binge use, alongside cardiovascular strain, comedown and unknown neurotoxicity. No controlled human studies exist; figures are approximate.
02 Mechanism
Potent, selective noradrenaline-dopamine reuptake inhibitor at the dopamine and noradrenaline transporters, characteristic of alpha-PVP analogues.
03 Dosing
| Tier | Dose | Route | Notes |
|---|---|---|---|
| Common | 5–15 mg | Insufflated | Extremely compulsive. |
| Common | 8–25 mg | Oral | Anecdotal; potent, start very low. |
04 Effects
| Effect | Magnitude | Evidence | |
|---|---|---|---|
| Intense stimulationStrong, long-lasting energy and focus. | Anecdotal | ||
| EuphoriaMarked dopaminergic mood elevation. | Anecdotal | ||
| Appetite suppressionStrong hunger reduction. | Anecdotal |
05 Side effects
| Effect | Severity | Frequency | Evidence | Countermeasures |
|---|---|---|---|---|
| Compulsive redosingIntense, hard-to-resist redosing compulsion typical of the PVP series. | Severe | Near universal | Anecdotal | |
| Cardiovascular strainSustained tachycardia and hypertension. | Severe | Common | Unconfirmed | |
| Stimulant psychosisParanoia and hallucinations after prolonged binges and sleep loss. | Severe | Uncommon | Unconfirmed |