|Summary sheet: DOI|
|Routes of Administration|
The synthesis of DOI was first described in 1972 and its usage in humans was first documented by Alexander Shulgin in the 1991 book PiHKAL ("Phenethylamines I Have Known and Loved"). DOI is very well-researched compared to most psychedelics. It is regularly used in research as a radioligand to map serotonin-2A receptors in the brain.
The effects of DOI are often compared to those of LSD, although notable differences can be distinguished. Besides the significantly longer duration, the experience is commonly reported to be more stimulating than LSD, with a more pronounced body load and a less complex head space. The after effects include long-lasting residual stimulation and difficulty sleeping, which, depending on the dose and time taken during the day, may persist for days afterwards.
DOI is sometimes sold as a substitute for LSD, or even sold falsely as LSD. This can be dangerous because DOI does not have the same established safety profile as LSD.
Along with its sensitive dose-response and unusually long duration, many reports also suggest that this substance may be overly difficult to use safely for those who are not already experienced with psychedelics. Therefore it is highly advised to approach this highly dose-sensitive, and long-lasting psychedelic substance with the proper amount of precaution and harm reduction practices if using it.
History and culture
This History and culture section is a stub.
As a result, it may contain incomplete or wrong information. You can help by expanding it.
DOI, or 2,5-Dimethoxy-4-iodoamphetamine, is a molecule of the amphetamine class. Amphetamines are substituted phenethylamines containing a phenyl ring bound to an amino (NH2) group through an ethyl chain and a methyl group bound to the alpha carbon Rα. DOI contains methoxy functional groups OCH3 attached to carbons R2 and R5 as well as an iodine atom attached to carbon R4 of the phenyl ring. DOI is the amphetamine, or alpha-methylated analogue, of the phenethylamine 2C-I.
DOI's psychedelic effects are believed to come from its efficacy as an agonist at the 5-HT2A, 5-HT2B and 5-HT2C receptors. However, the role of these interactions and how they result in the psychedelic experience continues to remain the subject of ongoing scientific inquiry.
Besides its action as a psychedelic, DOI has been shown to be an extremely potent inhibitor of tumour necrosis factor-alpha inflammation at picomolar concentrations in cell studies. TNF-alpha is an important target for research into degenerative conditions such as rheumatoid arthritis and Alzheimer's disease where the disease process involves tissue damage through chronic inflammation. This could make DOI and other 5-HT2A agonists an entirely new area for development of novel treatments for these conditions.
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 ☠.
- Stimulation - In terms of its effects on the physical energy levels of the user, DOI is usually considered to be extremely stimulating at levels which are capable of becoming uncomfortable and overwhelming. This can result in a shakiness and unsteadiness of the hands but encouraging one to move around, run, dance, climb and generally engage in physical activities. In comparison, other more commonly used psychedelics such as psilocin are generally sedating and relaxed.
- Spontaneous physical sensations - The "body high" of DOI often described as being notably more intense in comparison to most classical psychedelics such as LSD. The sensation itself can be described as a constantly present yet somewhat mild energetic pins and needles sensation that encompasses a person’s entire body. It is usually felt over every square inch of the skin but occasionally manifests itself in the form of a continuously shifting tingling sensation that travels up and down the body in spontaneous waves. However, this effect is reported to be very dose-dependent, as even slight increases in one's dose can result in persisting unpleasant feelings of over-stimulation.
- Bodily control enhancement
- Tactile enhancement - Feelings of enhanced tactile sensation are consistently reported at low to moderate levels throughout most DOI experiences.
- Nausea - Mild to extreme nausea is reported when consumed in moderate to high dosages and either passes once the person has vomited or gradually fades by itself as the peak sets in.
- Increased blood pressure
- Increased heart rate
- Muscle contractions
- Muscle spasms
- Vasoconstriction - This effect is usually only present at higher dosages, but can be particularly uncomfortable when it manifests, and may persist throughout the main duration of the experience.
- Appetite suppression
- Increased perspiration
- Pupil dilation
- Teeth grinding
- Increased salivation
- Seizure - This is a rarely observed effect but is known to happen in those who are presumably predisposed to them, especially while in physically taxing conditions such as being dehydrated, undernourished, overheated, or generally fatigued.
- Drifting (melting, breathing, morphing and flowing)
- Colour shifting
- Depth perception distortions
- Perspective distortions
- Symmetrical texture repetition
- After images
- Brightness alteration
DOI and other psychedelic substituted amphetamines produce 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 class. These effects include:
- Internal hallucination (autonomous entities; settings, sceneries, and landscapes; perspective hallucinations and scenarios and plots) - In comparison to other psychedelics such as LSD, DOI is extremely high in internal hallucinations. They are more common within dark environments and can be comprehensibly described through its variations as lucid in believability, interactive in style, new experiences in content, autonomous in controllability, geometry-based in style and almost exclusively of a personal, religious, spiritual, science-fiction, fantasy, surreal, nonsensical or transcendental nature in their overall theme.
- External hallucinations - These are often present during the comedown and can include shadow people, among other indescribable beings. These external hallucinations are often lucid, interactive, autonomous, and robust. As sleep deprivation and stimulant psychosis surface, a trip sitter should accompany individuals sensitive to stimulants for the last part of the comedown. The visual effects of psychosis have been reported to blend into the psychedelic visuals around the 16-24 hour mark, sometimes accompanied by auditory hallucinations.
The cognitive effects of DOI are described by many as characterized as extreme mental stimulation combined with a powerful amplification of the user's current mental state.
The total sum of these cognitive components regardless of the setting generally includes:
- Conceptual thinking
- Thought acceleration
- Thought connectivity
- Anxiety & Paranoia - This effect is not as common at low to moderate doses and is less likely to occur when the basic rules of set and setting are taken into account. It should be noted that this inconsistently induced effect is seemingly more likely to manifest when used with cannabis. This combination should be used with extreme caution if one is not experienced with psychedelics, meaning that the user should adequately pace themselves with a fraction of their usual amount. It is commonly reported that psychedelics can to a certain extent counteract some of the perceived mental cloudiness or intoxicating effects of THC causing the user to in turn use more cannabis than is needed which can often lead to an overwhelmingly anxious and paranoid headspace which can trigger a "bad trip".
- Empathy, affection, and sociability enhancement - This component is typically manifested only in the context of social settings in which one is within the company of others, and only at lower, non-impairing doses. These feelings of sociability, affection and empathy tend to be weaker and less consistent than those found on substances such as MDMA and 2C-B, but can still prove strong enough to provide long-lasting therapeutic effects.
- Cognitive euphoria
- Analysis enhancement - This effect is consistent in its manifestation and outrospection dominant.
- Emotion enhancement
- Novelty enhancement
- Personal bias suppression
- Personal meaning enhancement
- Immersion enhancement
- Increased libido
- Increased music appreciation
- Increased sense of humor
- Memory suppression
- Thought loops
- Time distortion
- Synaesthesia - In its fullest manifestation, this is a very rare and non-reproducible effect. Increasing the dosage can increase the likelihood of this occurring, but seems to only be a prominent part of the experience among those who are already predisposed to synaesthetic states.
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.
The toxicity and long-term health effects of recreational DOI do not seem to have been studied in any scientific context and the exact toxic dose is unknown. This is because DOI is a research chemical with very little history of human usage.
Anecdotal reports from users suggests that there are no negative health effects attributed to simply trying it by itself at low to moderate doses and using it very sparingly (but nothing can be completely 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.
The risk of a DOx overdose is present starting in or past the heavy dose range with sensitive people, or when a DOx is mixed with other substances, particularly stimulants or MAOIs. Non-oral routes also seem to exhibit a higher chance of overdosing, perhaps owing to differences in bioavailability, potency and unpredictability of dosage and effects. The effects of a DOx overdose typically include bizarre, delusional and sometimes violent behavior, amnesia, numbness, confusion and anxiety. The user may not be able to communicate and can be severely agitated. At appropriately high doses, more serious side effects such as psychosis, panic attacks and seizures which in turn further affect a dangerously elevated heart rate, blood pressure and vasoconstriction may occur. Severe vasoconstriction typically develops to its peak several hours into the intoxication and may require medical assistance if blood flow is significantly cut off for extended periods of time.
In the event of an overdose, benzodiazepines or antipsychotics can be administered to mitigate the hyperagitative effects. A powerful vasodilator may also need to be administered to prevent a hypertensive emergency, or in more serious cases, necrosis, organ failure and death from the resulting hypoxia. As a result, emergency medical services should always be sought in the event of a DOx overdose.
Tolerance and addiction potential
DOI is not habit-forming, and the desire to use it can actually decrease with use. It is most often self-regulating.
Tolerance to the effects of DOI is built almost immediately after ingestion. After that, it takes about 5-7 days for the tolerance to be reduced to half and 10-14 days to be back at baseline (in the absence of further consumption). DOI presents cross-tolerance with all psychedelics, meaning that after the consumption of DOI all psychedelics will have a reduced effect.
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.
- Lithium - Lithium is commonly prescribed for the treatment of bipolar disorder. There is a large body of anecdotal evidence that suggests taking it with psychedelics significantly increases the risk of psychosis and seizures. As a result, this combination is strictly discouraged.
- Cannabis - Cannabis may have an unexpectedly strong and unpredictable synergy with the effects of DOI. Caution is advised with this combination as it can significantly increase the risk of adverse psychological reactions like anxiety, paranoia, panic attacks, and psychosis. Users are advised to start off with only a fraction of their normal cannabis dose and take long breaks between hits to avoid unintentional overdose.
- Stimulants - Stimulants like amphetamine, cocaine or methylphenidate affect many parts of the brain and alter dopaminergic function. This combination can increase the risk of anxiety, paranoia, panic attacks, and thought loops. This interaction may also result in an elevated risk of mania and psychosis.
- Tramadol - Tramadol is well-documented to lower the seizure threshold and psychedelics may act to trigger seizures in susceptible individuals.
- Australia: DOI is not listed as a prohibited substance in The Standard for the Uniform Scheduling of Medicines and Poisons (SUSMP).
- Austria: DOI is illegal to possess, produce and sell under the NPSG (Neue-Psychoaktive-Substanzen-Gesetz Österreich).
- Brazil: DOI is illegal to possess, produce and sell as it is listed on Portaria SVS/MS nº 344.
- Canada: DOI is listed as a Schedule 1 drug as it is an analogue of amphetamine. The CDSA was updated as a result of the Safe Streets Act changing amphetamines from Schedule 3 to Schedule 1.
- Denmark: DOI became illegal on April 8, 2007.
- Germany: DOI is controlled under Anlage II BtMG (Narcotics Act, Schedule II) as of December 13, 2014. It is illegal to manufacture, possess, import, export, buy, sell, procure or dispense it without a license.
- Latvia: DOI is a Schedule I controlled substance.
- Sweden: DOI is a Schedule I substance as of August 30, 2007; this was published by the Medical Products Agency in their regulation LVFS 2007:10.
- Switzerland: DOI can be considered a controlled substance as a defined derivative of a-Methylphenethylamine under Verzeichnis E point 130. It is legal when used for scientific or industrial use.
- Turkey: DOI is a classed as drug and is illegal to possess, produce, supply, or import.
- United Kingdom: DOI is illegal to produce, supply, or import under the Psychoactive Substance Act, which came into effect on May 26th, 2016.
- United States: DOI is not scheduled in the United States, but it is likely that it would be considered an analog (of DOB) in which case sales or possession could be prosecuted under the Federal Analogue Act. DOI is regularly used in animal and in vitro research.
- Florida: DOI is a Schedule I controlled substance in the state of Florida.
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