I have Pernicious Anemia as well as Diabetes.
I get a B12 injection once every month.
Got Diagnosed when I was 18.
I was very ill & ended up in hospital,where they ran all kinds of tests, trying to find out what was wrong & finally they did.
It took quite a while for the docor to get me built back up to the level I should be at.
Taking a vitamin pill of B12 was going to do nothing to help me.
I have to take B12 injections for the rest of my life,thats what the blood specialist told me,he also told me if I stop getting the injections,with in a few months,I would become very ill again & could even die.
So that was pretty scary.