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2C-D

2C-D molecule structure2C-D molecule structure
2,5-Dimethoxy-4-methylphenethylamine
2C-M, LE-25
Psychoactive Class

2C-D is a synthetic psychedelic of the substituted phenethylamine class and a member of the 2C-x family.1 First described in the literature in 1970citation needed, its effects in humans were characterized by Alexander Shulgin in 19752, who notably referred to it as "pharmacological tofu" for its ability to extend or potentiate other substances without strongly coloring the experience.3 2C-D is generally considered milder than related compounds like 2C-Bcitation needed and produces short-lived effects with an unusually wide dose range.

Dosage & Duration

Dosage

Doses are population estimates that vary widely between individuals.

Threshold~3 mg
Light3-15 mg
Moderate15-50 mg
Strong50-100 mg
Heavy100+ mg

Dose response is reported to be steep, with small increases of a few milligrams in the low-to-mid range producing pronounced changes in effect intensity.

Duration

Onset15-45 minutes
Come Up20-60 minutes
Peak1.5-2.5 hours
Offset0.5-1.5 hours
After Effects1-4 hours
Total3-5 hours

Subjective Effects

Legacy content. A statistically backed ontology from Mindstate Design Labs is coming soon.

Effects vary widely by individual, dose, and context.

Physical

The physical effects of 2C-D can be broken down into several components which progressively intensify proportional to dosage.

Tactile enhancementTemperature regulation lossPupil dilation

Cognitive

The head space of 2C-D is described by many as one which is both insightful and relatively normal in its thought processes even at moderate to high dosages. The feeling of "unaltered consciousness" may be bothersome to trippers that are willing to experience events and concepts from a shifting point of view, since on 2C-D everything is fairly normal, stable and therefore rather uninteresting.

Visual

Distortions

2C-D presents a full and complete array of possible visual distortions.

Enhancements

2C-D presents a full and complete array of possible visual enhancements.

Geometry

The visual geometry that is present throughout this trip can be described as more similar in appearance to that of DOM or 25D-NBOMe than that of LSD, 2C-B or 2C-I. They can be comprehensively described as structured in their organization, organic in style, intricate in complexity, large in size, slow and smooth in motion, colourful in scheme, bright in colour, blurred in its edges and equally rounded and angular in its corners. They give off a natural feel to them at higher dosages. Whilst the final level of 2C-D geometry 2C-D has yet to be formally confirmed, it seems more likely that it would result in states of Level 8B visual geometry over Level 8A.

Hallucinatory States

2C-D 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. This holds particularly true in comparison to other substances within the phenethylamine family.

Transformations

Auditory

The auditory effects of 2C-D are common in their occurrence and exhibit a full range of effects.

Forked from Subjective Effect Documentation byJosie Kins September 2015.

See also: Psychedelic Intensity Scale, Effects of psychedelics (visual, cognitive, miscellaneous)

Reagent Testing

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

Marquis(MQ)
white → yellow1
Mecke(ME)
white → yellow2 → green2 → brown2
Mandelin(MD)
yellow2 → green2
Liebermann(LB)
white → black3 → yellow2
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Pharmacology

Pharmacodynamics

2C-D acts as a partial agonist of the serotonin 5-HT2A4, 5-HT2Bcitation needed, and 5-HT2C4 receptors. Its psychedelic effects are believed to stem primarily from its activity at the 5-HT2A receptorcitation needed, though the precise mechanisms by which this interaction produces the psychedelic experience remain incompletely understood.

Pharmacokinetics

2C-D is metabolized by the monoamine oxidase enzymes MAO-A and MAO-B.6 In rat studies, phase I metabolism involved deamination and O-demethylation, processes related to MAO and cytochrome P450 enzymes.citation needed CYP2D6 appears to play a minor additional role in its metabolism.6

Metabolitesnone documented yet

Interactions

Dangerous

Highest risk

These 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

Avoid

There is considerable risk of physical harm when taking these combinations, they should be avoided where possible.

Caution

Use caution

These 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.

2C-T-x compounds5-MeO-xxT tryptaminesAmphetaminesCannabisCocaineDOx compoundsMAOIsMescalineNBOMe compounds
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Tolerance

Tolerance timelines are rules of thumb, not exact schedules, and vary widely between individuals and use patterns.

Full Tolerance
Tolerance to the effects of 2C-D develops almost immediately after ingestion.citation needed
Baseline Reset
Approximately 7 days to return to baseline in the absence of further consumption.
Half Tolerance
Approximately 3 days for tolerance to reduce to half.
Cross Tolerance

Serotonergic psychedelicscitation needed

Harm Potential

Addiction & Dependence

Psychological

Extremely Low

2C-D is not habit-forming and the desire to use it can actually decrease with use. It is described as self-regulating and is not known to be associated with compulsive use patterns.

Physical

Extremely Low

Physical dependence is considered extremely unlikely. No withdrawal syndrome has been documented.

Psychosis Risk

Severe mental confusion and paranoia are listed among possible negative effects at higher doses, though specific psychosis risk from 2C-D alone has not been systematically studied.

History & Culture

Discovery and Early Research

The synthesis of 2C-D was first documented in scientific literature by Beng T. Ho and colleagues at the Texas Research Institute of Mental Sciences in 1970, who described both its preparation and pharmacological activity in animals.7 However, Alexander Shulgin had

Trip Reports

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Legality

International

2C-D is not listed under the 1961 Single Convention on Narcotic Drugs. It is not listed under the 1971 Convention on Psychotropic Substances. It is not listed under the 1988 Convention against Illicit Traffic in Narcotic Drugs and Psychotropic Substances.

By Country

Illegal21
United States flagUnited StatesIllegal
Argentina flagArgentinaIllegal (analog/blanket ban)
Australia flagAustraliaIllegal
Austria flagAustriaIllegal
Brazil flagBrazilIllegal
Canada flagCanadaIllegal
China flagChinaIllegal
Denmark flagDenmarkIllegal
Finland flagFinlandIllegal
Germany flagGermanyIllegal
Ireland flagIrelandIllegal (analog/blanket ban)
Israel flagIsraelIllegal
Japan flagJapanIllegal
Latvia flagLatviaIllegal (analog/blanket ban)
Netherlands flagNetherlandsIllegal (analog/blanket ban)
Norway flagNorwayIllegal
Poland flagPolandIllegal
Sweden flagSwedenIllegal
Switzerland flagSwitzerlandIllegal
Turkey flagTurkeyIllegal (analog/blanket ban)
United Kingdom flagUnited KingdomIllegal

References

Source Pages

  1. Bluelight: Report – 2C-D 30 mg (2024)
  2. Erowid
  3. Erowid: 2C-D Dosage
  4. Erowid: 2C-D Effects
  5. Erowid: Effects – 2C-D
  6. Hosten & Lazar – Smart Pills: 2C-D as Cognitive Enhancer
  7. Isomer Design (TiHKAL/PiHKAL)
  8. PiHKAL Entry #23 – 2C-D
  9. PsychonautWiki
  10. TripSit Factsheets
  11. TripSit Wiki
  12. Wikipedia
  13. Wikipedia: 2C (psychedelics)

Citations

  1. Be Vang Dean, Samuel J. Stellpflug, Aaron M. Burnett, & Kristin M. Engebretsen. (June 2013). 2C or not 2C: phenethylamine designer drug review. Journal of Medical Toxicology, 9(2), 172–178. https://doi.org/10.1007/s13181-013-0295-x12
  2. Shulgin AT, & Carter MF. (1975). Centrally active phenethylamines. Psychopharmacology Communications, 1(1), 93–98. https://bibliography.maps.org/resources/download/904512
  3. Shulgin A. (1991). PiHKAL: A Chemical Love Story. Transform Press. https://www.erowid.org/library/books_online/pihkal/pihkal023.shtml12
  4. Pablo R. Moya, Kelly A. Berg, Manuel A. Gutiérrez-Hernandez, Patricio Sáez-Briones, Miguel Reyes-Parada, Bruce K. Cassels, & William P. Clarke. (June 2007). Functional selectivity of hallucinogenic phenethylamine and phenylisopropylamine derivatives at human 5-hydroxytryptamine (5-HT)2A and 5-HT2C receptors. The Journal of Pharmacology and Experimental Therapeutics, 321(3), 1054–1061. https://doi.org/10.1124/jpet.106.1175071234
  5. 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
  6. Denis S. Theobald, & Hans H. Maurer. (January 2007). Identification of monoamine oxidase and cytochrome P450 isoenzymes involved in the deamination of phenethylamine-derived designer drugs (2C-series). Biochemical Pharmacology, 73(2), 287–297. https://doi.org/10.1016/j.bcp.2006.09.02212
  7. Beng-Thong Ho, L. Wayne Tansey, Robert L. Balster, Rong An, William M. McIsaac, & Robert T. Harris. (January 1970). Amphetamine analogs. II. Methylated phenethylamines. Journal of Medicinal Chemistry, 13(1), 134–135. https://doi.org/10.1021/jm00295a0341
  8. Acute Trials, 2-C-DOM!. PiHKAL (n.d.). https://isomerdesign.com/pihkal/notebooks/transcripts/p1/p1.175.pdf1
  9. Decree No. 560/2019 and Law No. 23,737. mpf.gob.ar (n.d.). https://www.mpf.gob.ar/procunar/files/2019/09/Decreto-560-19-listado-de-estupefacientes-grupos-qu%C3%ADmicos.pdf1
  10. Decree No. 560/2019 and Law No. 23,737. argentina.gob.ar (n.d.). https://www.argentina.gob.ar/normativa/nacional/ley-23737-138/actualizacion1

Further Reading

  1. Demystifying Serotonin Syndrome (NIH)

Article Status

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

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Recent changes8 human edits · latest

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31 July 2026

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