I might have been mistaken on several countries - I can only find sources for it's use in the UK But it is used by first responders as well: http://www.sjtrem

I might have been mistaken on several countries - I can only find sources for it's use in the UK But it is used by first responders as well: http://www.sjtrem.com/content/22/S1/P15 http://www.sjtrem.com/content/22/S1/P15 A decent amount of air ambulances polled use diamorphine. I'm pretty sure (but unfortunately having difficulty sourcing) regular ambulances have it available as well. It's widely used as palliative care in the UK as well, as you pointed out - but it might be worth noting that's not it's sole use, and palliative care doesn't always mean they're going to be dying soon enough that addiction wouldn't be a harmful issue to deal with.