Hi,
I too have hypothyroidism and addison's disease and a previous endo of mine put me on b12 shots to be taken monthly. They worked fine, but I discontinued the shots after about a year. No specific reason I stopped, but I will also say that I couldn't really tell a difference when taking the shots and when not taking the shots. Not sure if I have a vitamin D deficency, but I don't drink milk, so I probably do. How did you end up with Addison's? Just curious. Never met anyone with Addison's and I was diagnosed about 16 years ago, when in the 8th grade. Leah