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4F-PHP

This article is a stubmissing:
Subjective Effects
Pharmacology
Interactions
Tolerance
History & Culture
Legality
4F-PHP molecule structure4F-PHP molecule structure
4-Fluoropyrrolidinohexiophenone
4-Fluoro-alpha-PHP, 4-Fluoro-Pyrrolidinohexanophenone
Psychoactive Class
Stimulant

Dosage & Duration

Dosage

Doses are population estimates that vary widely between individuals.

Threshold~5 mg
Light5-15 mg
Moderate15-30 mg
Strong30-50 mg
Heavy50+ mg

Subjective Effects

Subjective Effects not written up yet

Reagent Testing

Expected colorimetric results for common reagent tests. Colors show reaction change over 1–2 minutes.

Mecke(ME)
white → yellow1
Mandelin(MD)
yellow2 → brown1 → brown2
Zimm(ZI)
white → yellow1
Marquis(MQ)
No reaction
No reaction
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Pharmacology

Pharmacology not written up yet

Interactions

Interactions not written up yet

An unlisted combination is an unknown one, not a safe one. Check a dedicated combination chart before mixing.

Check TripSit

Tolerance

Tolerance not written up yet

Harm Potential

Addiction & Dependence

Psychological

Classified as habit-forming, suggesting potential for psychological dependence consistent with other pyrrolidine stimulants.

History & Culture

History & Culture not written up yet

Legality

Legality not written up yet

References

Source Pages

  1. Bluelight: 4F-PVP Information Thread (related pyrrolidine cathinone)
  2. Bluelight: MDPHP & 4F-PHP Experience Report
  3. Erowid: 4F-PHP Experience Reports
  4. PsychonautWiki: A-PHP (parent compound)
  5. TripSit: 4F-PHP Factsheet
  6. Wikipedia
  7. Wikipedia: Index

Further Reading

  1. CFSRE: 4F-Alpha-PHP Monograph

Article Status

  • Josie Kins avatar
    Step 1 · Automated synthesis

    An autonomous workflow built by Josie Kins compiled this article's foundation from information published across the web.

  • Step 2 · First-pass reviewPending

    Not yet reviewed — this article is pending editorial review by Lyrea.

  • Step 3 · Citation reviewPending

    No one has reviewed this article's citations yet. That second pass checks each claim against the source it cites.

Recent changes7 human edits · latest

Times are UTCNewest first

24 January 2026

  1. Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more

  2. Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more

  3. Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more

  4. Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more

  5. Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more

  6. Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more

  7. Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more

All changes to this article · Site-wide recent changes

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