Research chemicalCathinoneStimulantResearch chemicalPyrrolidinophenone

4-Me-PVP (MPHP-related pyrrolidinophenone)

Also known as 4-Me-PVP · 4-methyl-alpha-PVP

Written by enwyReviewed 5 Aug 20261 sources0 comments

4-Me-PVP is a ring-methylated analogue of alpha-PVP within the pyrrolidinophenone cathinone family, offered as a designer stimulant. Like its parent it is presumed to be a potent norepinephrine-dopamine reuptake inhibitor with high abuse potential and no meaningful human safety data.

01 Overview

4-Me-PVP (4-methyl-alpha-pyrrolidinovalerophenone) adds a methyl group to the aromatic ring of alpha-PVP. It circulates on research-chemical markets as one of many pyrrolidinophenone variants created to evade drug schedules.

No clinical data exist. Assessment relies entirely on analogy to alpha-PVP and related cathinones, predicting potent, compulsive stimulation with significant cardiovascular and psychiatric risk.

02 Mechanism

Presumed potent norepinephrine-dopamine reuptake inhibitor of the pyrrolidinophenone class.

03 Dosing

Tier	Dose	Route	Notes
Common (approximate, anecdotal)	5–20 mg	Insufflated	No validated dosing; extreme caution advised.

04 Effects

Effect	Magnitude	Evidence
Stimulation and euphoriaExpected by analogy to alpha-PVP; unverified in humans.	Presumed strong	Unconfirmed
Compulsive redosingClass-typical binge pattern.	Presumed strong	Unconfirmed

05 Side effects

Effect	Severity	Frequency	Evidence	Countermeasures
Cardiovascular toxicityTachycardia, hypertension and arrhythmia risk.	Severe	Unknown	Unconfirmed
Agitation and psychosisParanoia and severe insomnia expected during heavy use.	Severe	Unknown	Unconfirmed

06 Legal status

United Kingdom

Class B (cathinone generic)

as of Jan 2026

United States

Likely Schedule I via Federal Analogue Act

as of Jan 2026

07 References

EMCDDA reporting on synthetic cathinonesEMCDDA, European Drug Report

08 Discussion0 comments

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This page is reference information, not medical advice. Doses and protocols are documented as they appear in the clinical literature and in practice — describing them is not a recommendation to use them. Countermeasures listed here are not a substitute for a physician. Legal status varies by jurisdiction and changes.