
1) Dissociative drug 2) Opioid antagonist
Found on
https://www.crosswordclues.com/clue/nalmefene

Nalmefene (trade name Selincro), originally known as nalmetrene, is an opioid receptor antagonist developed in the early 1970s, used primarily in the management of alcohol dependence. It has also been investigated for the treatment of other addictions such as pathological gambling and addiction to shopping. Nalmefene is an opiate derivative simila...
Found on
http://en.wikipedia.org/wiki/Nalmefene

(nal´mә-fēn″) an opioid antagonist, used as the hydrochloride salt in the treatment of opioid overdose and postoperative opioid depression.
Found on
http://www.encyclo.co.uk/local/21001
(Selincro) Opioid modulator used to help reduce drinking. Example: Taking Selincro to cut down on alcohol consumption.
Found on
https://www.alcoholscotland.co.uk
No exact match found.