Could anyone advise on where you can source 1ml ampules of Hydroxocobalamin? After seeking second opinions I found a very clued up & sympathetic nurse practitioner who persuaded my G.P. That 12wk B12 injections were not helpful for me and changed to every 8wks, they would have liked 4 weekly for me. but my G.P. Wouldn’t agree. In process of changing G.P. I might add. Any info r.e. Sourcing this would be much appreciated.