I saw my GP this week, armed with documents re difficulties in diagnosing and treating B12 deficiency. I marched into his room, put the file down on his desk and immediately told him I had been so ill with the symptoms of B12 deficiency that I'd had no choice other than to self-inject with hydroxocobalamin. I was expecting an argument, but he just asked me if this had worked and had the symptoms gone and when I said they had, he replied that if I could manage this myself he was all in favour of me carrying on and I wouldn't have to go to his rooms for a monthly injection. I could hardly believe my luck! As I got up to go, he asked me if he could keep the document I had printed out. I must say he is a very clued up doctor, so I was more than impressed that he wanted the document to see if there was anything in there he might no actually know. I know not everybody gets this lucky and I have found that self-treating can be hugely expensive, but at least I'm alive and feel so much better now.