Methiopropamine

Summary sheet: Methiopropamine

Methiopropamine
Chemical Nomenclature
Common names	MPA
Substitutive name	Methiopropamine
Systematic name	1-(Thiophen-2-yl)-2-methylaminopropane
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. Oral Dosage Threshold Common Heavy 10 - 20 - 30 - 50 - 60 mg Light Strong Threshold 10 - 20 mg Light 20 - 30 mg Common 30 - 50 mg Strong 50 - 60 mg Heavy 60 mg + Duration Total 6 - 10 hours Onset 30 - 60 minutes Peak 2 - 4 hours Offset 2 - 3 hours After effects 1 - 2 hours Insufflated Dosage Threshold Common Heavy 5 - 5 - 20 - 40 - 60 mg Light Strong Threshold 5 mg Light 5 - 20 mg Common 20 - 40 mg Strong 40 - 60 mg Heavy 60 mg + Duration Total 2 - 4 hours Onset 5 - 10 minutes Come up 5 - 10 minutes Peak 30 - 60 minutes Offset 30 - 120 minutes After effects 6 - 8 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.

Methiopropamine (MPA) is a thiophene ring-based structural analogue of methamphetamine which was originally reported in 1942.^[1] Chemically, it is not a phenethylamine or amphetamine, nor is it their functional analog. It originally appeared for public sale in the U.K. in December 2010 as a research chemical or legal high, recently branded as "Blow".^[2] It has limited popularity as a recreational stimulant.^[3]

Chemistry

Methiopropamine, or 1-(thiophen-2-yl)-2-methylaminopropane, is a synthetic molecule of the thiophene class. It is a structural analogue to methamphetamine. It contains a thiophene ring bound to an amino (NH2) group through an ethyl chain with an additional methyl substitution at R_α. Methiopropamine contains an additional methyl substitution at R_N (similarly to MDMA and methamphetamine). Although methiopropamine is analogous to methamphetamine, it is neither an amphetamine nor a phenethylamine as methiopropamine contains a thiophene ring instead of a benzene ring. Thiophene is a five-membered aromatic ring with a sulphur constituent.

Pharmacology

Methiopropamine functions as a selective norepinephrine-dopamine releasing agent. This allows dopamine and norepinephrine to accumulate within the brain, resulting in stimulating and euphoric effects. It is approximately one third as potent as dextroamphetamine as a norepinephrine reuptake inhibitor and one fifth as much as a dopamine reuptake inhibitor. It displays negligible activity as a serotonin reuptake inhibitor.^[4]

Subjective effects

The effects listed below are based upon the subjective effects index and personal experiences of PsychonautWiki contributors. The listed 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 and are more likely to induce a full range of effects. Likewise, adverse effects become much more likely on higher doses and may include serious injury or death.

Experience reports

There are currently no anecdotal reports which describe the effects of this compound within our experience index. Additional experience reports can be found here:

• Erowid Experience Vaults: Methiopropamine

Toxicity and harm potential

The toxicity and long-term health effects of recreational MPA use do not seem to have been studied in any scientific context and the exact toxic dosage is unknown. This is because MPA has very little history of human usage. Anecdotal evidence from people who have tried MPA within the community suggest that there do not seem to be any negative health effects attributed to simply trying this drug at low to moderate doses by itself and using it sparingly (but nothing can be completely guaranteed).

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

Tolerance and addiction potential

As with other stimulants, the chronic use of MPA can be considered moderately addictive with a high potential for abuse and is capable of causing psychological dependence among certain users. When addiction has developed, cravings and withdrawal effects may occur if a person suddenly stops their usage.

Tolerance to many of the effects of MPA develops with prolonged and repeated use. This results in users having to administer increasingly large doses to achieve the same effects. After that, it takes about 3 - 7 days for the tolerance to be reduced to half and 1 - 2 weeks to be back at baseline (in the absence of further consumption). MPA presents cross-tolerance with all dopaminergic stimulants, meaning that after the consumption of MPA all stimulants will have a reduced effect.

Psychosis

Abuse of compounds within the stimulant class at high dosages for prolonged periods of time can potentially result in a stimulant psychosis that may present with a variety of symptoms (e.g., paranoia, hallucinations, or delusions).^[5] A review on treatment for amphetamine, dextroamphetamine, and methamphetamine abuse-induced psychosis states that about 5–15% of users fail to recover completely.^[6][7] The same review asserts that, based upon at least one trial, antipsychotic medications effectively resolve the symptoms of acute amphetamine psychosis.^[8]

Dangerous interactions

Although many psychoactive substances are safe on their own, they can become dangerous and even life-threatening when combined with other substances. The list below contains some common potentially dangerous combinations, but may not include all of them. Certain combinations may be safe in low doses of each but still increase the potential risk of death. Independent research should always be done to ensure that a combination of two or more substances is safe before consumption.

• Stimulants - MPA can be potentially dangerous in combination with other stimulants as it can increase one's heart rate and blood pressure to dangerous levels.
• 25x-NBOMe - Both the NBOMe series and this compound induce powerful stimulation and their interaction may cause severe side effects. These can include thought loops, seizures, increased blood pressure, vasoconstriction, increased heart rate, and heart failure (in extreme cases).
• Alcohol - It is dangerous to combine alcohol, a depressant, with stimulants due to the risk of excessive intoxication. Stimulants decrease the sedative effect of alcohol which is the main factor most people consider when determining their level of intoxication. Once the stimulant wears off, the effects of alcohol will be significantly increased, leading to intensified disinhibition as well as respiratory depression. If combined, one should strictly limit themselves to only drinking a certain amount of alcohol per hour.
• DXM - This combination may cause increased heart rate and panic attacks.
• MXE - Increased heart rate and blood pressure may occur.
• Tramadol - This combination can increase the risk of seizures.
• MDMA - The neurotoxic effects of MDMA may be increased when combined with amphetamine and other stimulants.
• MAOIs - This combination may increase the amount of neurotransmitters such as dopamine to dangerous or even fatal levels. Examples include syrian rue, banisteriopsis caapi, 2C-T-2, 2C-T-7, αMT, and some antidepressants.^[9]
• Cocaine - This combination may increase strain on the heart.

Legal issues

• Finland - Methiopropamine is illegal in Finland.
• Germany - Methiopropamine is illegal in Germany.
• United Kingdom - Methiopropamine is a Class B drug.^[10]
• United States - Methiopropamine is not scheduled at the federal level in the United States,^[11] but it could be considered an analogue of methamphetamine in which case purchase, sale, or possession could be prosecuted under the Federal Analogue Act. Methiopropamine's structure differs from methamphetamine's structure significantly more than previous successful prosecutions under the same law.^{[citation needed]}
  • Florida - Methiopropamine is a Schedule I controlled substance in the state of Florida, making it illegal to buy, sell, or possess in Florida.^[12]

See also

• Responsible use
• Methamphetamine
• Amphetamine
• Stimulant

External links

• Methiopropamine (Wikipedia)
• Methiopropamine (Erowid Vault)
• Methiopropamine (Isomer Design)
• Methiopropamine (MyCrew)

References