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PMA can cause serious side effects even at moderate doses, such as hyperthermia and serotonin syndrome, which can easily result in death or hospitalization.

As a result, it is strongly discouraged to use this substance. Please see this section for more details.


This page has not been approved by the PsychonautWiki administrators.

It may contain incorrect information, particularly with respect to dosage, duration, subjective effects, toxicity and other risks.

Summary sheet: PMA
Chemical Nomenclature
Common names PMA, 4-MA, Death
Substitutive name para-Methoxyamphetamine
Systematic name 1-(4-methoxyphenyl)propan-2-amine
Class Membership
Psychoactive class Entactogen
Chemical class Amphetamine
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 ?
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Light 20 - 40 mg
Common 40 - 60 mg
Strong Higher dosages can result in serious hyperthermia and eventually death.
Total short

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.

para-Methoxyamphetamine (also known as 4-MA and PMA) is a potent hallucinogen substance of the amphetamine class. PMA belongs to a family of substances known as the substituted amphetamines. However, unlike other substituted amphetamines, PMA does not produce stimulant, entactogen, or euphoria euphoriant effects. It is not taken on its own but is instead found as an ingredient in tablets of "Ecstasy" as a false substitute for MDMA.

PMA has been around since the 1970s, where it was sold along with PMMA as Ecstasy, and has gained great attention following a number of hospitalizations and deaths. It usually does not produce much noticeable effects, which leads people ingesting more or combining it with other substances, until they eventually overdose. It produces dangerous adverse effects, including a sudden and extremely high rise in body temperature and blood pressure, abnormal heartbeats, dehydration and sometimes severe dizziness.

PMA, along with other drugs like PMMA and PMEA have very little recreational value and are considered as one of the most dangerous and toxic substances known. It is strongly recommended that these two drugs should be completely avoided.


PMA (para-Methoxyamphetamine or 4-MA) is a molecule of the amphetamine class. Molecules of the amphetamine class contain a phenethylamine core featuring a phenyl ring bound to an amino (NH2) group through an ethyl chain with an additional methyl substitution at Rα. It contains a methoxy (OCH3) functional group bound to the R4 carbon of the phenyl ring. It is the 4-Methoxy analog of amphetamine.


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This pharmacology section is incomplete.

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PMA acts as a selective serotonin releasing agent (SSRA) with weak effects on dopamine and norepinephrine transporters. However, relative to MDMA, it is considerably less effective as a releaser of serotonin with properties more akin to a reuptake inhibitor in comparison. It evokes robust hyperthermia while producing only modest hyperactivity and serotonergic neurotoxicity, substantially lower than that caused by MDMA. Anecdotal reports suggest it is not particularly euphoric at all, perhaps even dysphoric in contrast. PMA has also been shown to act as a potent, reversible inhibitor of the enzyme MAO-A with no significant effects on MAO-B, and the combination of this property and serotonin release is likely responsible for its high lethality potential.

It appears that PMA elevates body temperatures dramatically; the cause of this property is suspected to be related to its ability to inhibit MAO-A and at the same time releasing large amounts of serotonin, effectively causing serotonin syndrome. It appears that PMA activates the hypothalamus much more strongly than MDMA and other drugs like ephedrine, thereby causing rapid increases in body temperature (which is the major cause of death in PMA mortalities).[1]

Subjective effects

This subjective effects section is a stub.

As such, it is still in progress and may contain incomplete or wrong information.

You can help by expanding it.

The effects listed below are based upon the subjective effects index and personal experiences of PsychonautWiki contributors. These effects should be taken with a grain of salt and will rarely (if ever) occur all at once, but heavier doses will increase the chances of inducing a full range of effects. Likewise, adverse effects become much more likely on higher doses and may include serious injury or death.

Physical effects

Cognitive effects

Visual effects

Toxicity and harm potential


This toxicity and harm potential section is a stub.

As such, it may contain incomplete or even dangerously wrong information. You can help by expanding or correcting it.
We also recommend that you conduct independent research and use harm reduction practices when using this substance.

PMA and its relative PMMA can be considered extremely toxic when compared to other substances such as Methamphetamine or MDMA. Ingestion of PMA has been associated with severe tachycardia (abnormally high heart rate), seizures, dehydration, hyperthermia, and death. PMA has a relatively slow onset, causing many users to redose which causes excess toxicity.

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

Legal status

  • Austria: PMA is illegal to possess, produce and sell under the SMG (Suchtmittelgesetz Österreich) | [2]
  • Canada: PMA is a Schedule I substance.[3]
  • Brazil: Possession, production and sale is illegal as it is listed on Portaria SVS/MS nº 344.[4]
  • United States: PMA is a Schedule I substance.[5]
  • United Kingdom: PMA is a Class A drug.[citation needed]
  • Switzerland: PMA is illegal in Switzerland.[6]

See also