Disclaimer: am shareholder in manufacturer. Feel there is a massive lack of emphasis on novel pharmaceutical interventions in drug and alcohol rehabilitation.
Hadn't heard of nalmefene, thanks for the reference. Naltrexone is also useful in much lower doses than the standard 50mg tablets, as "low-dose naltrexone" (1-5mg).
I will say that drinking while taking Naltrexone was an odd experience because I felt none of the europhoria that typically comes with drinking.
Some people, when I tell them that, respond with "well, what did you expect? that's drinking" and some with "that can't be, perhaps your vodka was watered down". Your comment reminded me of that.
Having experienced both versions (euphoric and non euphoric), do you have any insight about the difference, how much of it is physiological vs. psychological?