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Product Name: MPT
IUPAC Name: N,N-diethyl-2-(1H-indol-3-yl)ethanamine
Other Names: MPT, Methylpropyltryptamine
Molecular Formula: none
Molar Mass: 237.26 g·mol−1
Effect: stimulant, psychedelic
Purity of the substance: 99.9%
Physical properties: Crystals, Powder
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Table of Contents

  1. Introduction

    • Overview of N-Methyl-N-Propyltryptamine (MPT)
    • Historical Context and Usage
  2. Chemistry

    • Generic Structure of Tryptamine Molecules
    • Crystal Structure Insights into MPT
  3. Pharmacology

    • Theoretical Insights Based on Structure
    • Subjective Effects and the SEI
  4. Physical Effects

    • Spontaneous Physical Sensations
    • Visual Effects
    • Auditory Effects
    • Cognitive Effects
    • Hallucinatory States
  5. Toxicity and Harm Potential

    • Lack of Scientific Research
    • Harm Reduction Practices
    • Tolerance and Addiction Potential
    • Dangerous Interactions
  6. Legal Considerations

    • Germany
    • New Zealand
    • Switzerland
    • United Kingdom
    • United States


The pharmacology of N-Methyl-N-propyltryptamine (MPT) remains shrouded in mystery due to a dearth of research on this synthetic psychedelic. In the absence of extensive studies, our understanding is primarily derived from the examination of its structure and comparisons to subjective effects reported with other tryptamine psychedelics, such as psilocin and DMT.

Structural Insights and Hypothesized Mechanisms

MPT is conjectured to function as a 5-HT2A partial agonist based on its structural similarities to other psychedelics. The interaction with the serotonin receptor, particularly the 5-HT2A subtype, is believed to play a pivotal role in eliciting the psychedelic experiences associated with MPT. However, the precise mechanisms underlying these interactions and how they translate into the psychedelic encounter remain elusive, emphasizing the need for further research in this domain.

Subjective Effects and the SEI

Disclaimer: The following subjective effects are derived from the Subjective Effect Index (SEI), a compilation of anecdotal user reports and personal analyses contributed by the PsychonautWiki community. These effects should be approached with a degree of skepticism, considering the open nature of the research literature.

It is crucial to note that the manifestation of these effects is not necessarily predictable or reliable, with higher doses increasing the likelihood of experiencing the full spectrum of effects. Additionally, caution is warranted, as higher doses may escalate the risk of adverse effects, including addiction, severe injury, or even death.

In conclusion, as the enigma of MPT's pharmacology persists, acknowledging the limitations of existing knowledge becomes paramount. The subjective effects, while insightful, are based on anecdotal reports, emphasizing the imperative need for comprehensive scientific investigations to unravel the intricate pharmacological mechanisms governing N-Methyl-N-propyltryptamine.

Physical Effects 

Spontaneous Physical Sensations

MPT induces a range of spontaneous physical sensations, creating a multifaceted psychedelic experience. Users may encounter heightened tactile sensitivity, altered body temperature perception, and a general sense of physical awareness.

Increased Heart Rate

One of the common physiological responses to MPT is an increase in heart rate. This effect contributes to the overall intensity of the psychedelic experience and is a hallmark shared with many other psychedelics.


Nausea, although not universal, is reported as a potential side effect of MPT consumption. This gastrointestinal discomfort adds a layer of complexity to the physical aspects of the psychedelic encounter.

Pupil Dilation

Pupil dilation is a characteristic feature of psychedelics, including MPT. The dilation of pupils is a visual indicator of the substance's impact on the autonomic nervous system.

Visual Effects

MPT's influence extends into the visual domain, producing a spectrum of enhancements, distortions, and hallucinatory states.


Users may experience heightened visual perception, characterized by enhanced color intensity and vibrancy, contributing to an enriched visual experience.


Visual distortions encompass a variety of phenomena, including drifting, color shifting, depth perception alterations, and symmetrical texture repetition, creating a visually dynamic and engaging environment.

Hallucinatory States

Internal hallucinations are reported with MPT, featuring autonomous entities, vivid settings, sceneries, and landscapes, along with perspective hallucinations and intricate scenarios and plots.

Cognitive Effects

The impact of MPT extends into cognitive realms, influencing thought patterns, emotional states, and immersive cognitive experiences.

Conceptual Thinking

Users often report enhanced conceptual thinking, allowing for novel perspectives and ideas to emerge during the psychedelic journey.

Cognitive Euphoria

A sense of cognitive euphoria may accompany the MPT experience, contributing to a positive and uplifting mental state.

Thought Loops

Thought loops, a cognitive phenomenon common in psychedelics, may occur, leading to repetitive and recursive thinking patterns.

Auditory Effects

The auditory landscape undergoes transformations under the influence of MPT, encompassing enhancements, distortions, and hallucinations.


Increased music appreciation is a notable auditory enhancement reported by users, heightening the emotional impact of auditory stimuli.


Auditory hallucinations may manifest, creating an immersive and unique auditory experience during the psychedelic journey.

In conclusion, the physical effects of N-Methyl-N-propyltryptamine weave a complex tapestry of sensations, visuals, and cognitive shifts. As users navigate the psychedelic spectrum, understanding these nuances provides a roadmap for a more informed and enriching exploration of MPT's psychotropic landscape.

Toxicity and Health Effects

The recreational use of N-Methyl-N-propyltryptamine (MPT) lacks comprehensive scientific scrutiny regarding its toxicity and long-term health implications. As a research chemical with minimal human usage history, the exact toxic dose remains unknown. Anecdotal evidence from the psychonaut community suggests that at low to moderate doses, and when used sparingly, MPT may not induce negative health effects.

It is imperative to stress the importance of independent research before combining substances, as the safety of such combinations is not guaranteed. Harm reduction practices are strongly recommended to mitigate potential risks associated with MPT use.

Tolerance and Addiction Potential

MPT is characterized as non-habit-forming, and interestingly, the desire to use it may decrease with continued use, making it a self-regulating substance. Tolerance to MPT builds almost immediately after ingestion, taking approximately 3 days for it to reduce by half and 7 days to return to baseline in the absence of further consumption. Notably, MPT induces cross-tolerance with all psychedelics, diminishing the effects of other substances in this category.

Dangerous Interactions

While certain drugs may be safe individually, combining them can lead to dangerous and potentially life-threatening consequences. Some common dangerous combinations include interactions with tramadol, which lowers seizure thresholds, and stimulants, which may induce anxiety or thought loops. Independent research is crucial to ensure the safety of combining two or more substances.

Legal Status


MPT falls under control as per the NpSG (New Psychoactive Substances Act) in Germany since July 18, 2019. Production, import with the intention to market, administration to others, and trading are punishable offenses, while possession is illegal but not penalized.

New Zealand

In New Zealand, MPT is classified as a Class C controlled substance due to its status as an analogue of DMT.


MPT is not currently controlled under categories A, B, C, or D in Switzerland, potentially suggesting legal status.

United Kingdom

MPT is classified as a Class A controlled substance in the United Kingdom under the tryptamine catch-all clause.

United States

MPT is unscheduled in the United States. However, it may be considered an analogue of DET, a Schedule I compound. Consequently, the sale for human consumption or illicit use could lead to prosecution under the Federal Analogue Act.

In conclusion, understanding the toxicity, harm potential, and legal implications of MPT is crucial for those navigating the realm of psychedelic research chemicals. Always approach these substances with caution, prioritize harm reduction, and stay informed about the legal landscape to ensure responsible use.

Frequently Asked Questions (FAQ)

Q1: What is N-Methyl-N-Propyltryptamine (MPT)?

  • A synthetic psychedelic belonging to the tryptamine class, known for its reported hallucinogenic and entactogenic effects.

Q2: How does MPT compare to other psychedelics like DMT?

  • MPT shares structural similarities with DMT but introduces unique variations, influencing its pharmacological profile and effects.

Q3: What is the current understanding of MPT's pharmacology?

  • Limited research necessitates reliance on structural analysis and subjective effects, with MPT speculated to act as a 5-HT2A partial agonist.

Q4: What are the physical effects associated with MPT use?

  • From spontaneous sensations to visual and auditory enhancements, MPT induces a range of effects, as outlined in the article.

Q5: Is MPT considered habit-forming?

  • No, MPT is not habit-forming, and the desire to use it may decrease with continued use.

Q6: Are there dangerous interactions associated with MPT?

  • Yes, combining MPT with certain substances, like tramadol or stimulants, can have potentially harmful consequences. Independent research is crucial.

Q7: What is the legal status of MPT in different countries?

  • The legal status varies, with MPT being controlled in some countries like Germany and the United Kingdom, while it remains unscheduled in the United States.

Q8: How can users ensure safe consumption of MPT?

  • Independent research, harm reduction practices, and staying informed about legal implications are key to responsible MPT use.

Q9: What is known about the toxicity and long-term health effects of MPT?

  • Limited scientific research makes it challenging to determine the exact toxic dose and long-term health effects of MPT. Anecdotal evidence suggests no significant health issues at low to moderate doses.

Q10: Where can one find more information about MPT?

  • Further research, especially from reliable sources and scientific literature, is recommended for a comprehensive understanding of MPT and its effects.

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