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A-PHP

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Subjective Effects
Pharmacology
Interactions
Tolerance
History & Culture
A-PHP molecule structureA-PHP molecule structure
alpha-Pyrrolidinohexiophenone
alpha-PHP, PV-7, PV7

Dosage & Duration

Dosage

Doses are population estimates that vary widely between individuals.

Threshold1 mg
Light5-10 mg
Moderate10-25 mg
Strong25-40 mg
Heavy40+ mg

Duration

Onset2-20 minutes
Peak1-2.5 hours
Offset1-5 hours
After Effects1-48 hours
Total2-8 hours

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.

Mandelin(MD)
yellow2 → orange2 → red2 → brown2 → yellow2
Liebermann(LB)
white → yellow1
Hofmann(HM)
white → yellow1 → orange1
Scott(SC)
pink2 → blue2
Powered by PROtestkit.eu

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

Extremely High

Chronic use is regarded as highly addictive, with substantial abuse potential and a capacity to cause psychological dependence. A-PHP is especially associated with compulsive redosing, where users may find it extremely difficult to stop taking more even after psychotic symptoms appear. Abruptly stopping after sustained use may be followed by cravings and withdrawal symptoms.

Toxicity

Cardiovascular

Because its rush can be very powerful, α-PHP may produce uncomfortable or painful cardiac sensations, particularly with abuse or prolonged use; sudden spikes of blood pressure may manifest as an extremely uncomfortable sensation, particularly when vaporized or injected.

Psychosis Risk

Can result in stimulant psychosis presenting with paranoia, hallucinations, or delusions, particularly when dosed too highly or frequently. A review of treatment for similar stimulant-induced psychosis reports that approximately 5-15% of users do not fully recover. Psychotic and schizophrenic symptoms may occur even before users stop redosing, and delusional states are commonly reported when the substance is abused.

Seizure Risk

Misuse may make seizures more likely in some individuals by reducing the seizure threshold.

History & Culture

History & Culture not written up yet

Legality

International

UN Convention on Psychotropic Substances Schedule II (added March 2020)

By Country

Illegal10
United States flagUnited StatesIllegal
Austria flagAustriaIllegal
Brazil flagBrazilIllegal
China flagChinaIllegal
Germany flagGermanyIllegal
Italy flagItalyIllegal
Netherlands flagNetherlandsIllegal
Sweden flagSwedenIllegal
Switzerland flagSwitzerlandIllegal
United Kingdom flagUnited KingdomIllegal

References

Source Pages

  1. Erowid Experience Vault: alpha-PHP
  2. PsychonautWiki: A-PHP
  3. The Drug Users Bible: alpha-PHP

Citations

  1. Suchtgiftverordnung Anl. 4 — Bundesrecht konsolidiert, Fassung vom 02.09.2026. ris.bka.gv.at (n.d.). https://www.ris.bka.gv.at/NormDokument.wxe?Abfrage=Bundesnormen&Anlage=4&Artikel=&FassungVom=2026-09-02&Gesetzesnummer=10011053&Paragraf=&ShowPrintPreview=True&Uebergangsrecht=1
  2. BGBl. II Nr. 9/2021 — Verordnung, mit der die Suchtgiftverordnung geändert wird. ris.bka.gv.at (n.d.). https://www.ris.bka.gv.at/Dokumente/BgblAuth/BGBLA_2021_II_9/BGBLA_2021_II_9.pdf1
  3. Suchtmittelgesetz § 27 — Bundesrecht konsolidiert, Fassung vom 02.09.2026. ris.bka.gv.at (n.d.). https://www.ris.bka.gv.at/NormDokument.wxe?Abfrage=Bundesnormen&Anlage=&Artikel=&FassungVom=2026-09-02&Gesetzesnummer=10011040&Paragraf=27&ShowPrintPreview=True&Uebergangsrecht=1
  4. Neue-Psychoaktive-Substanzen-Gesetz § 1 — Bundesrecht konsolidiert, Fassung vom 21.08.2026. ris.bka.gv.at (n.d.). https://www.ris.bka.gv.at/NormDokument.wxe?Abfrage=Bundesnormen&Anlage=&Artikel=&FassungVom=2026-08-21&Gesetzesnummer=20007605&Paragraf=1&ShowPrintPreview=True&Uebergangsrecht=1
  5. Portaria nº 344, de 12 de maio de 1998 — current consolidated text, Anexo I, Lista F2. anvisalegis.datalegis.net (n.d.). https://anvisalegis.datalegis.net/action/ActionDatalegis.php?acao=abrirTextoAto&tipo=POR&numeroAto=00000344&seqAto=000&valorAno=1998&orgao=SVS/MS&codTipo=&desItem=&desItemFim=&cod_menu=1696&cod_modulo=134&pesquisa=true1
  6. Resolução de Diretoria Colegiada - RDC nº 473, de 24 de fevereiro de 2021. anvisalegis.datalegis.net (n.d.). https://anvisalegis.datalegis.net/action/ActionDatalegis.php?acao=abrirTextoAto&tipo=RDC&numeroAto=00000473&seqAto=000&valorAno=2021&orgao=RDC/DC/ANVISA/MS&codTipo=&desItem=&desItemFim=&cod_menu=1696&cod_modulo=134&pesquisa=true1
  7. Lista de substâncias sujeitas a controle especial no Brasil. gov.br (n.d.). https://www.gov.br/anvisa/pt-br/assuntos/medicamentos/controlados/lista-substancias1
  8. 我国管制毒品目录(2026年7月更新,540种+三大类). ga.sz.gov.cn (n.d.). https://ga.sz.gov.cn/SZJDZX/SZBMFW/content/post_12898420.html1
  9. 麻醉药品和精神药品管理条例. xzfg.moj.gov.cn (n.d.). https://xzfg.moj.gov.cn/front/law/detail?LawID=1744&Query=%E7%B2%BE%E7%A5%9E%E7%B2%BE%E7%A5%9E1
  10. 三部门联合发布最新版《非药用类麻醉药品和精神药品目录》. btgaj.xjbt.gov.cn (n.d.). https://btgaj.xjbt.gov.cn/c/2025-07-28/8428464.shtml1

Further Reading

  1. Klavz et al. 2016: Case report of alpha-PHP intoxication
  2. Meltzer et al. 2006: Pyrovalerone analogs as monoamine uptake inhibitors
  3. PMC: alpha-PHP and alpha-PiHP Review
  4. Shoptaw et al. 2009: Treatment for amphetamine psychosis
  5. WHO ECDD: Alpha-PHP Critical Review

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

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