I'm in the US, I was receiving 1000mcg vit b injections weekly for 10 weeks. My intrinsic factor is fine, no bloodwork shows pernicious anemia. B12 is 800 now, was 250 range (200-900). I've now been told to use prescription nasal drop once weekly. I can feel myself going down hill. I've had ALL thyroid testing possibly done which is good. My hands & feet are always ice cold, I've had hair thinning so now using minoxidil. Foggy brain, tired, I have almost ALL of the pernicious anemia symptoms. I also do have nerve damage which is the only test that shows I'm not crazy, this showed on the EMG. Im considering self injections but in the US they don't allow this. How do you do it in the U.K.?