hi Debs,
I suspect it's probably just lack of awareness. Nalmefene is *very* new on the NHS, it's only been available for a few months in England, so the information is probably taking a while to get out there
it's rather odd that your GP was supportive - well done her! - but your local Alcohol team weren't. I wonder whether they have the entrenched, traditional views of alcoholism - once an alcoholic, always an alcoholic, alcoholics can never drink safely again, etc. - & the idea of taking Nal *& drinking* is a bit radical for them still. as you say, them expecting an initial 3 months' abstinence is a bit unrealistic - if we could do that we wouldn't be coming to them for help in the first place!
anyway, it's great that your GP was able to help you & prescribe the Nal. good luck with it, two weeks is a little soon to be expecting to see any major results, but they'll come with time

-badger