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Not to be confused with methedrine, mephedrone, methadone, or methylone.
Systematic (IUPAC) name
Clinical data
Legal status
  • I-P(Poland)[1]
CAS number 530-54-1 YesY
ATC code None
PubChem CID 216281
ChemSpider 187475 YesY
Chemical data
Formula C11H15NO2 
Mol. mass 193.242 g/mol
 YesY (what is this?)  (verify)

Methedrone (para-methoxymethcathinone, 4-methoxymethcathinone, bk-PMMA, PMMC, methoxyphedrine), sometimes known by the street name meow meow,[2] is a stimulant and entactogen drug of the phenethylamine, amphetamine, and cathinone chemical classes.[3][unreliable source?] It is closely related to para-methoxymethamphetamine (PMMA), methylone and mephedrone, and likely has a similar pharmacological profile.[original research?]

Health risks[edit]

As 4-methoxymethcathinone is a relatively new drug with little exposure experienced by humans, there are many concerns for possible ill health effects that are currently unknown. It is known that 4-methoxymethcathinone was almost immediately withdrawn from sale by initial vendors after unsubstantiated reports of adverse health symptoms. Some amphetamine analogs containing a para-methoxy group are known to cause severe hyperthermia and even death due to concurrent MAOI and monoamine releasing action.[4]


The deaths of two young men in southeast Sweden in 2009 were attributed to methedrone overdosage.[5][6] Both were comatose when found. One suffered cardiorespiratory arrest on the way to the hospital, while the second survived for 16 hours in the emergency department.


Methedrone may still be legal in some countries, but its sale has been banned in Sweden and the UK. Its prior availability via the internet led to increased use of the drug.

See also[edit]


  1. ^ = WDU20111050614 "Ustawa z dnia 15 kwietnia 2011 r. o zmianie ustawy o przeciwdziałaniu narkomanii ( Dz.U. 2011 nr 105 poz. 614 )". Internetowy System Aktów Prawnych. Retrieved 17 June 2011. 
  2. ^ "Paul Ross to Take BBC Break After Admitting Drug Use". The Guardian. Press Association. 1 September 2014. Retrieved 1 September 2014. 
  3. ^
  4. ^ Becker J, Neis P, Rohrich J, Zorntlein S. A fatal paramethoxymethamphetamine intoxication. Legal Medicine (Tokyo). 2003 Mar;5 Suppl 1:S138-41.
  5. ^ . PMID 21073814.  Missing or empty |title= (help)
  6. ^ "Two die of legal drug overdose". The Local. October 14, 2009.