Ethylisopropyltryptamine (EiPT) is a member of the tryptamine family, known for its capacity to induce psychedelic and hallucinogenic experiences. This compound is believed to have been initially synthesized by the American psychopharmacologist Alexander Shulgin.

IUPAC name
CAS Number848130-11-0 
Chemical and physical data
Molar mass230.355 g·mol−1


EiPT, a shortened form of N-ethyl-N-isopropyl-tryptamine, possesses the complete chemical name N-ethyl-N-[2-(1H-indol-3-yl)ethyl]propan-2-amine. It falls within the tryptamine category, part of the broader group of compounds referred to as indolethylamines. EiPT shares close chemical similarities with other compounds like diethyltryptamine (DET) and DIPT.


Our understanding of the psychopharmacological characteristics of EiPT remains limited. However, anecdotal reports indicate that it induces psychedelic effects with a duration of approximately 4 to 6 hours. According to Shulgin’s observations, EiPT tends to elicit sensations of nausea, dysphoria, and other undesirable side effects. Unlike many other psychedelic substances, EiPT does not typically produce hallucinations or vivid visual experiences.


While there have been no documented fatalities or cases requiring hospitalization attributed to EiPT, it’s essential to acknowledge that its safety profile remains largely unexplored.


EiPT remains unregulated and unmonitored in the United States, yet its possession and distribution may be subject to legal action under the Federal Analog Act due to its structural resemblances to DET.


1. What is Ethylisopropyltryptamine (EiPT)?

  • EiPT is a chemical compound that belongs to the tryptamine class of compounds. It is a psychedelic and psychoactive substance.

2. Is EiPT legal in the United States?

  • EiPT’s legal status can vary by jurisdiction, but it is generally unregulated and uncontrolled at the federal level in the United States. However, its status may change, and possession or distribution may be subject to legal action under certain circumstances, such as its structural similarity to controlled substances.

3. How is EiPT different from other tryptamines like DMT and psilocybin?

  • EiPT is distinct from other tryptamines due to its unique chemical structure and psychoactive effects. It may produce its own set of subjective experiences and side effects, differing from other tryptamines.

4. What are the effects of EiPT?

  • EiPT is known for producing psychedelic effects, such as altered perception, hallucinations, and changes in consciousness. The specific effects and intensity can vary among individuals.

5. Is EiPT safe to use?

  • The safety of EiPT is not well-researched, and its long-term effects still need to be fully understood. As with any psychoactive substance, using caution and responsible dosing is crucial. It is advisable to approach EiPT with caution, especially if you have no prior experience with it.

6. Are there any risks associated with EiPT use?

  • Like other psychedelics, EiPT may carry potential risks, including psychological distress, anxiety, and hallucinogen-persisting perception disorder (HPPD). Additionally, there is a risk of contamination or impurities when obtaining the substance from unregulated sources.

7. How is EiPT typically consumed?

  • EiPT is often taken orally, either in its pure form or as a powder. It can also be administered through other methods, such as insufflation (snorting), but this is less common.

8. Can EiPT be used for therapeutic purposes?

  • There is limited research on the therapeutic potential of EiPT, and it is not approved for any medical or therapeutic use. Other psychedelics like psilocybin and MDMA are more widely studied for therapeutic applications.

9. Is EiPT addictive?

  • The addictive potential of EiPT is not well understood, but it is generally considered to have a lower risk of physical dependence compared to substances like opioids or stimulants. However, psychological dependence can still occur.

10. Where can I find more information about EiPT?

  • Due to the evolving legal and scientific landscape surrounding EiPT, it is important to consult reliable sources of scientific literature and seek advice from healthcare professionals. Staying informed and making well-informed decisions is crucial when considering the use of this substance.

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