RT Journal Article SR Electronic T1 Emergency department presentations in determining the effectiveness of drug control in the United Kingdom: mephedrone (4-methylmethcathinone) control appears to be effective using this model JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 70 OP 71 DO 10.1136/emermed-2011-200747 VO 30 IS 1 A1 Wood, David M A1 Greene, Shaun L A1 Dargan, Paul I YR 2013 UL http://emj.bmj.com/content/30/1/70.abstract AB Mephedrone (4-methylmethcathinone) and related cathinones were controlled in the United Kingdom on 16 April 2010. An analysis of presentations to the emergency department of patients with acute toxicity related to the use of mephedrone demonstrated that there was a peak in presentations prior to and a significant fall in presentations following the control of mephedrone. This suggests that the control of mephedrone in the United Kingdom may have been effective in reducing the acute harm associated with the drug.