Thanks for your information! I've tried so many different meds over the years and I honestly can't recall my reaction to Naltrexone but I know I've tried it and think it didn't jive with my SSRI medication.

Thanks so much though, I'm going back to the GP tomorrow so I'll read up on the links you provided and see if the GP can give me another run at it (or at least remind me why I didn't stick to it last time!)

Really appreciate the support, thanks again :)