2C-P
2C-P (2,5-dimethoxy-4-propylphenethylamine) is a synthetic psychedelic of the phenethylamine class and a member of the 2C-x family.citation needed First synthesized by Alexander Shulgin in 1974 and documented in PiHKAL, it stands out as one of the most potent and longest-lasting compounds in its series, with effects spanning 10-20 hours. 2C-P is notably dose-sensitive with a narrow margin between adequate and excessive doses, and is associated with intense body load including nausea and muscle tension. Volumetric dosing is strongly recommended due to its potency.
Dosage & Duration
Dosage
Doses are population estimates that vary widely between individuals.
2C-P has a steep dose-response curve, with only a few milligrams separating a manageable dose from an overdose. Accurate milligram scales or volumetric liquid dosing are advised over visual estimation. Because of the slow onset, redosing earlier than 3 hours is discouraged, and increments above a previously evaluated dose should be small. A 16 mg dose has been described as a clear overdose with physical consequences.
Duration
Subjective Effects
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Effects vary widely by individual, dose, and context.
Physical
Cognitive
The head space of 2C-P is described by many as one which is both insightful and relatively normal in its thought processes even at moderate to high dosages.
Visual
Geometry
The visual geometry of 2C-P can be described as more similar in appearance to that of 4-AcO-DMT or ayahuasca than that of LSD, 2C-B, or 2C-I. They can be comprehensively described as structured in their organization, organic in geometric style, intricate in complexity, large in size, fast and smooth in motion, colourful in scheme, glossy in colour, sharp in their edges and equally rounded and angular in their corners. They give off a contradictory natural and synthetic feel that at higher dosages are significantly more likely to result in states of Level 7B visual geometry over Level 7A. The visual geometry is distinct from 2C-E, psilocin and ayahuasca and can be described as faster moving and more intense in proportion to the present cognitive and physical effects than 2C-E.
Hallucinatory States
2C-P produces a full range of high level hallucinatory states in a fashion that is more consistent and reproducible than that of many other commonly used psychedelics, particularly in comparison to other substances within the phenethylamine family.
Auditory
The auditory effects of 2C-P are more common in their occurrence than many commonly used psychedelics.
See also: Psychedelic Intensity Scale, Effects of psychedelics (visual, cognitive, miscellaneous)
Pharmacology
Pharmacodynamics
2C-P acts as an agonist at serotonin 5-HT2 receptors, which is believed to underlie its psychedelic effects.citation needed It also binds to the serotonin 5-HT1A receptor with approximately 14-fold lower affinity than for the 5-HT2A receptor.1 The substance shows high affinity for the rat trace amine-associated receptor 1 (TAAR1) and lower but still high affinity for mouse TAAR1.citation needed Unlike many other psychedelics, 2C-P has demonstrated reinforcing effects in rodents, producing dose-dependent conditioned place preference in mice and self-administration in rats. This appears to involve decreased dopamine transporter expression and increased DAT phosphorylation in the nucleus accumbens, which may result in reduced dopamine reuptake and increased extracellular dopamine levels through reverse transport. The substance shows little or no affinity for monoamine transporters and only weakly inhibits monoamine oxidases.
Pharmacokinetics
2C-P biotransformation research has proposed N-acetylation; deamination followed by reduction to an alcohol or oxidation to a carboxylic acid; mono- and bis-hydroxylation; mono- and bis-O-demethylation; and subsequent glucuronidation and/or sulfation, including combinations of these steps.citation needed Human kinetic evidence remains limited: a single intoxication case used two blood concentrations to estimate an elimination half-life of 19 hours. This case estimate should not be presented as a population oral half-life.
Dangerous
Highest riskThese combinations are considered extremely harmful and should always be avoided. Reactions to these drugs taken in combination are highly unpredictable and have a potential to cause death.
Unsafe
AvoidThere is considerable risk of physical harm when taking these combinations, they should be avoided where possible.
Caution
Use cautionThese combinations are not usually physically harmful, but may produce undesirable effects, such as physical discomfort or overstimulation. Extreme use may cause physical health issues. Synergistic effects may be unpredictable. Care should be taken when choosing to use this combination.
Tolerance
Tolerance timelines are rules of thumb, not exact schedules, and vary widely between individuals and use patterns.
Serotonergic psychedelics
Harm Potential
Addiction & Dependence
Psychological
Extremely Low2C-P is not known to be associated with compulsive use. As a serotonergic psychedelic, it is considered to have a low potential for abuse. Users report a self-regulating quality to the experience.
Physical
Extremely LowPhysical dependence is extremely unlikely. 2C-P does not appear to be physically addictive.citation needed
Toxicity
2C-P has been found to produce neurotoxicity at high doses in rodent studies2; relevance to typical human recreational doses is not established.
Acute cardiovascular effects including vasoconstriction, increased blood pressure, and significantly elevated heart rate have been reported during intoxication.citation needed
Psychosis Risk
2C-P can produce severe mental confusion, disturbing hallucinations, anxiety, fear, paranoia, and overwhelming thoughts, particularly at higher doses.citation needed The steep dose-response curve increases the risk of experiencing these adverse psychological reactions.
History & Culture
Synthesis and Documentation
2C-P was first synthesized by American chemist Alexander Shulgin in 1974. The compound was subsequently documented in Shulgin's 1991 book PiHKAL (Phenethylamines I Have Known and Loved), where he detailed his findings on its psychoactive properties. Published qualitative reports characterize the…
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Legality
International
1961 Single Convention: 2C-P is not individually scheduled.
1971 Convention on Psychotropic Substances: 2C-P is not individually scheduled.
1988 Convention: 2C-P is not listed in precursor Tables I or II.
By Country
References
Source Pages
Citations
- Anna Rickli, Dino Luethi, Julian Reinisch, Danièle Buchy, Marius C. Hoener, & Matthias E. Liechti. (December 2015). Receptor interaction profiles of novel N-2-methoxybenzyl (NBOMe) derivatives of 2,5-dimethoxy-substituted phenethylamines (2C drugs). Neuropharmacology, 99, 546–553. https://doi.org/10.1016/j.neuropharm.2015.08.0341
- Young-Jung Kim, Shi-Xun Ma, Kwang-Hyun Hur, Youyoung Lee, Yong-Hyun Ko, Bo-Ram Lee, Seon-Kyung Kim, Su-Jeong Sung, Kyeong-Man Kim, Hyoung-Chun Kim, Seok-Yong Lee, & Choon-Gon Jang. (April 2021). New designer phenethylamines 2C-C and 2C-P have abuse potential and induce neurotoxicity in rodents. Archives of Toxicology, 95(4), 1413–1429. https://doi.org/10.1007/s00204-021-02980-x123
- Rapper Ceon Broughton wins appeal against manslaughter conviction following festival death of Louella Fletcher-Michie. Garden Court Chambers (2020-08-18). https://gardencourtchambers.co.uk/rapper-ceon-broughton-wins-appeal-against-manslaughter-conviction-following-festival-death-of-louella-fletcher-michie/1
- NIH PubChem CID 44350080 property record — 2,5-Dimethoxy-4-propylphenethylamine. pubchem.ncbi.nlm.nih.gov (n.d.). https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/44350080/property/IUPACName,Title,CanonicalSMILES,IsomericSMILES,MolecularFormula/JSON1
- NIH PubChem CID 44350080 synonyms — 2C-P. pubchem.ncbi.nlm.nih.gov (n.d.). https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/44350080/synonyms/JSON1
- Neue-Psychoaktive-Substanzen-Verordnung (NPSV), consolidated Austrian text, version 28 August 2026. ris.bka.gv.at (n.d.). https://ris.bka.gv.at/geltendefassung/bundesnormen/20007642/npsv%2C%20fassung%20vom%2028.08.2026.pdf1
- NPSV Anlage II, BGBl. II Nr. 106/2024, operative Annex II text. ris.bka.gv.at (n.d.). https://ris.bka.gv.at/Dokumente/Bundesnormen/NOR40261441/II_106_2024_Anlage_II.pdf1
- Suchtgiftverordnung (SV), consolidated Austrian regulation, version 28 August 2026. ris.bka.gv.at (n.d.). https://ris.bka.gv.at/geltendefassung/bundesnormen/10011053/suchtgiftverordnung%2C%20fassung%20vom%2028.08.2026.pdf1
- Suchtgiftverordnung Annex V, current RIS text, version 28 August 2026. ris.bka.gv.at (n.d.). https://ris.bka.gv.at/NormDokument.wxe?Abfrage=Bundesnormen&Anlage=5&Artikel=&FassungVom=2026-08-28&Gesetzesnummer=10011053&Paragraf=&Uebergangsrecht=&ShowPrintPreview=True1
- Neue-Psychoaktive-Substanzen-Gesetz (NPSG), consolidated Austrian statute, version 28 August 2026. ris.bka.gv.at (n.d.). https://ris.bka.gv.at/geltendefassung/bundesnormen/20007605/npsg%2C%20fassung%20vom%2028.08.2026.pdf1
Further Reading
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24 January 2026
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
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