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Summary sheet: DPT
Chemical Nomenclature
Common names DPT, Dipropyltryptamine, The Light
Substitutive name N,N-Dipropyltryptamine
Systematic name 3-[2-(Dipropylamino)ethyl]indole
Class Membership
Psychoactive class Psychedelic
Chemical class Tryptamine
Routes of Administration

WARNING: Always start with lower doses due to differences between individual body weight, tolerance, metabolism, and personal sensitivity. See responsible use section.

Threshold 10 mg
Light 15 - 20 mg
Common 20 - 50 mg
Strong 50 - 100 mg
Heavy 100 mg +
Total 30 - 90 minutes
Onset 0 - 1 minutes
After effects 2 - 4 hours
Threshold 50 mg
Light 75 - 150 mg
Common 150 - 250 mg
Strong 250 - 350 mg
Heavy 350 mg +
Total 2 - 4 hours
Onset 20 - 60 minutes
After effects 2 - 3 hours

Threshold 5 mg
Light 20 - 50 mg
Common 50 - 100 mg
Strong 100 - 200 mg
Heavy 200 mg +
Total 3 - 5 hours
Onset 5 - 20 minutes
Peak 30 - 45 minutes
After effects 2 - 4 hours

DISCLAIMER: PW's dosage information is gathered from users and resources for educational purposes only. It is not a recommendation and should be verified with other sources for accuracy.


N,N-Dipropyltryptamine (also known as Dipropyltryptamine, DPT, and "The Light") is a lesser-known psychedelic substance of the tryptamine class. It is closely related to DMT and is reported to be uniquely similar in its hallucinogenic intensity, albeit with a moderately longer duration and greater unpredictability relative to DMT and other psychedelic tryptamines.

DPT was first synthesized in 1950.[1] Human use was first reported in 1973, where it was researched in low doses as an adjunct to therapy for alcoholism.[2] It has also been researched in high doses to induce peak experiences for terminal cancer patients.[3] It has gained some notoriety for its adoption as the primary sacrament for the "Temple of the True Inner Light" in the United States, a Christian off-shoot organization who believe in the ritual use of psychedelics and refer to them as "the true flesh of God."[4]

DPT is commonly consumed via insufflation or orally. Many report the experience of insufflation to be very congestive and painful which, with the rapidness of onset, does not give the user much time to acclimate themselves to its powerful effects. It can also be administered intramuscularly or via vaporization after conversion to the freebase form. Smoking the freebase is reported to be the preferred route used by the "Temple of True Inner Light". More experienced members ingest a DPT tea.[citation needed]

Very little data exists about the pharmacological properties, metabolism, and toxicity of DPT, and it has relatively little history of human usage. It has long been available on the research chemicals market as a legal, grey-market alternative to DMT, and commercially distributed through online vendors. Many reports also suggest that this substance may be overly difficult to use safely for those who are not already very experienced with hallucinogens. It is highly advised to approach this powerful psychedelic substance with the proper amount of precaution and harm reduction practices when using it.


DPT, or N,N-dipropyltryptamine, is a synthetic indole molecule of the tryptamine class. Tryptamines share a core structure comprised of a bicyclic indole heterocycle attached at R3 to an amino group via an ethyl side chain. DPT contains two propyl groups carbon chains bound to the terminal amine RN of its tryptamine backbone.

DPT has a number of substituted analogs such as 4-HO-DPT or 4-AcO-DPT.


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This pharmacology section is incomplete.

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Further information: Serotonergic psychedelic

Studies on rodents have found that the effectiveness with which a selective 5-HT2A receptor antagonist blocks the behavioral actions of this compound strongly suggest that the 5-HT2A receptor is an important site of action for DPT, but the modulatory actions of a 5-HT1A receptor antagonist also imply a 5-HT1A-mediated component to the actions of DPT.[5] The role of these interactions and how they result in the psychedelic experience remains the subject of ongoing scientific investigation.

Subjective effects

Relative to psychedelic tryptamines like DMT, DPT is often reported to be similar in its hallucinogenic intensity, albeit with a moderately longer duration and more challenging effects. DPT experiences are often described as a "bizarre", "unsettling", and "darker" version of DMT experiences. DPT is reported to be more sensual and physical than DMT and other psychedelics with a corresponding amount of adverse physical effects.

At light to moderate doses, users often report a slight sense of anaesthetization and relaxation. As the dose increases, hyper-awareness of one's heart rate and breathing increases and body tremors and loss of muscle control are often reported. The effects of DPT can range from strong euphoria and sensuality to nausea, panic, and intense states dysphoria even within the same experience.

Disclaimer: The effects listed below cite the Subjective Effect Index (SEI), an open research literature based on anecdotal user reports and the personal analyses of PsychonautWiki contributors. As a result, they should be viewed with a healthy degree of skepticism.

It is also worth noting that these effects will not necessarily occur in a predictable or reliable manner, although higher doses are more liable to induce the full spectrum of effects. Likewise, adverse effects become increasingly likely with higher doses and may include addiction, severe injury, or death ☠.

Physical effects

Visual effects

Multi-sensory effects

Transpersonal effects

Experience reports

Anecdotal reports which describe the effects of this compound within our experience index include:

Additional experience reports can be found here:

Toxicity and harm potential


This toxicity and harm potential section is a stub.

As a result, it may contain incomplete or even dangerously wrong information! You can help by expanding upon or correcting it.
Note: Always conduct independent research and use harm reduction practices if using this substance.

The toxicity and long-term health effects of recreational DPT do not seem to have been studied in any scientific context and the exact toxic dose is unknown. This is because DPT is a research chemical with very little history of human usage. There has been one death associated with the use DPT and seizures, but the dose is unknown.[6]

Anecdotal reports from those who have taken DPT suggests that negative health effects are not likely to occur from simply trying it by itself at low to moderate doses and using it sparingly (although nothing can be guaranteed). Independent research should always be done to ensure that a combination of two or more substances is safe before consumption.

It is strongly recommended that one use harm reduction practices when using this substance.

Tolerance and addiction potential

DPT is not habit-forming and the desire to use it can actually decrease with use. As with most psychedelics, it is reported to be self-limiting.

Tolerance to the effects of DPT has been shown to not be built in animal models.[7] However, it has been reported to be able to build slightly relative to DMT, although still to an insignificant degree compared to most psychedelics.

Dangerous interactions

Warning: Many psychoactive substances that are reasonably safe to use on their own can suddenly become dangerous and even life-threatening when combined with certain other substances. The following list provides some known dangerous interactions (although it is not guaranteed to include all of them).

Always conduct independent research (e.g. Google, DuckDuckGo, PubMed) to ensure that a combination of two or more substances is safe to consume. Some of the listed interactions have been sourced from TripSit.

Legal status

  • Germany: DPT is controlled under the NpSG (New Psychoactive Substances Act)[9] as of July 18, 2019.[10] Production and import with the aim to place it on the market, administration to another person and trading is punishable. Possession is illegal but not penalized.[11]
  • Latvia: DPT is a Schedule I controlled substance.[12]
  • New Zealand: DPT is an analogue of DMT, therefore it is a Class C controlled substance in New Zealand.[13]
  • Sweden: Following its sale as a designer drug, DPT was made illegal in Sweden on January 26, 2016.[14]
  • Switzerland: DPT is a controlled substance specifically named under Verzeichnis E.[15]
  • United Kingdom: DPT is a Class A controlled substance in the United Kingdom as a result of the tryptamine catch-all clause.[16]
  • United States: DPT is unscheduled in most of the United States. However, some states prohibited DPT, making it illegal to buy, sell, or possess:
    • Florida: DPT is a Schedule I controlled substance.[17]
    • Maine: DPT is a Schedule X controlled substance.[18]
    • Oklahoma: DPT is a Schedule I controlled substance.[19]

See also

External links


  • Soskin, R.A., Grof, S., & Richards, W.A. (1973). Low doses of Dipropyltryptamine in psychotherapy. Archives of General Psychiatry, 28 6, 817-21.
  • Richards, W. A., Rhead, J. C., DiLeo, F. B., Yensen, R., & Kurland, A. A. (1977). The peak experience variable in DPT-assisted psychotherapy with cancer patients. Journal of Psychedelic Drugs, 9(1), 1-10. http://dx.doi.org/10.1080/02791072.1977.10472020
  • Grof, S., Soskin, R. A., Richards, W. A., & Kurland, A. A. (1972). DPT as an adjunct in psychotherapy of alcoholics. International Pharmacopsychiatry, 8(1), 104-115. PMID: 4150711
  • Li, J., Rice, K.C., & France, C.P. (2007). Behavioral effects of dipropyltryptamine in rats: evidence for 5-HT1A and 5-HT2A agonist activity. Behavioural Pharmacology, 18 4, 283-8.


  1. Li, J. X.; Rice, K.; France, C. P. (2007). "Behavioral effects of dipropyltryptamine in rats: evidence for 5-HT1A and 5-HT2A agonist activity". Behavioural Pharmacology. 18 (4): 283–288. doi:10.1097/FBP.0b013e3281f19ca0. eISSN 1473-5849. ISSN 0955-8810. OCLC 22170289. PMID 17551320. 
  2. Grof, S.; Soskin, R. A.; Richards, W. A.; Kurland, A. A. (1973). "DPT as an Adjunct in Psychotherapy of Alcoholics". International Pharmacopsychiatry. 8 (1): 104–115. doi:10.1159/000467979. ISSN 0020-8272. OCLC 1753673. PMID 4150711. 
  3. Richards, W. A.; Rhead, J. C.; Dileo, F. B.; Yensen, R.; Kurland, A. A. (1977). "The Peak Experience Variable in DPT-Assisted Psychotherapy with Cancer Patients". Journal of Psychedelic Drugs. 9 (1): 1–10. doi:10.1080/02791072.1977.10472020. ISSN 0022-393X. OCLC 7565359. 
  4. "Temple of the True Inner Light". Retrieved January 9, 2020. 
  5. Fantegrossi, W., Reissig, C., Katz, E., Yarosh, H., Rice, K., Winter, J. (January 2008). "Hallucinogen-like effects of N,N-dipropyltryptamine (DPT): Possible mediation by serotonin 5-HT1A and 5-HT2A receptors in rodents". Pharmacology Biochemistry and Behavior. 88 (3): 358–365. doi:10.1016/j.pbb.2007.09.007. ISSN 0091-3057. 
  6. Tribune, B. D. S., Carver County teen’s death puts spotlight on ease of purchasing synthetic drugs online 
  7. Smith, D. A.; Bailey, J. M.; Williams, D.; Fantegrossi, W. E. (2014). "Tolerance and Cross-Tolerance to Head Twitch Behavior Elicited by Phenethylamine- and Tryptamine-Derived Hallucinogens in Mice". Journal of Pharmacology and Experimental Therapeutics. 351 (2): 485–491. doi:10.1124/jpet.114.219337. eISSN 1521-0103. ISSN 0022-3565. OCLC 1606914. PMC 4309922Freely accessible. PMID 25271256. 
  8. Talaie, H.; Panahandeh, R.; Fayaznouri, M. R.; Asadi, Z.; Abdollahi, M. (2009). "Dose-independent occurrence of seizure with tramadol". Journal of Medical Toxicology. 5 (2): 63–67. doi:10.1007/BF03161089. eISSN 1937-6995. ISSN 1556-9039. OCLC 163567183. PMC 3550327Freely accessible. PMID 19415589. 
  9. "Anlage NpSG" (in German). Bundesministerium der Justiz und für Verbraucherschutz [Federal Ministry of Justice and Consumer Protection]. Retrieved December 10, 2019. 
  10. "Verordnung zur Änderung der Anlage des Neue-psychoaktive-Stoffe-Gesetzes und von Anlagen des Betäubungsmittelgesetzes" (PDF). Bundesgesetzblatt Jahrgang 2019 Teil I Nr. 27 (in German). Bundesanzeiger Verlag. July 17, 2019. pp. 1083–1094. Retrieved January 1, 2020. 
  11. "§ 4 NpSG" (in German). Bundesministerium der Justiz und für Verbraucherschutz [Federal Ministry of Justice and Consumer Protection]. Retrieved December 10, 2019. 
  12. "Noteikumi par Latvijā kontrolējamajām narkotiskajām vielām, psihotropajām vielām un prekursoriem" (in Latvian). VSIA Latvijas Vēstnesis. November 10, 2005. Retrieved January 1, 2020. 
  13. "Schedule 1 Class A controlled drugs". "Reprint as at 13 August 2019: Misuse of Drugs Act 1975". Parliamentary Counsel Office. Retrieved January 7, 2020. 
  14. "31 nya substanser klassas som narkotika eller hälsofarlig vara" (in Swedish). Folkhälsomyndigheten [Public Health Agency of Sweden]. January 26, 2016. Retrieved January 1, 2020. 
  15. "Verordnung des EDI über die Verzeichnisse der Betäubungsmittel, psychotropen Stoffe, Vorläuferstoffe und Hilfschemikalien" (in German). Bundeskanzlei [Federal Chancellery of Switzerland]. Retrieved January 1, 2020. 
  16. "Part I: Class A Drugs". "Misuse of Drugs Act 1971". UK Government. Retrieved January 7, 2020. 
  17. "Title XLVI: Chapter 893: Drug Abuse Prevention And Control". The 2019 Florida Statutes. The Florida Legislature. Retrieved January 10, 2020. 
  18. http://legislature.maine.gov/statutes/17-a/title17-Asec1102.html
  19. "Section 2-204 - Schedule I". Oklahoma Statutes Citationized. Oklahoma Judicial Center. January 11, 2019. Archived from the original on July 9, 2019. Retrieved January 10, 2020.