I have been really amazed by all the wonderful support and information provided on these postings! I wanted to add that after a lot of back and forth with my doctor about shots, I have decided to switch to sublingual Methylcobalamin tablets by Solgar, a vitamin company based in New Jersey with very good reputation. Taking the pills daily have provided me with a more consistent and even sense of overall health, instead of running out of gas, so to speak, waiting for my next shot. I live in New York where the vitamins are readily available, but they can be ordered online as well. I think you can even get them through Amazon. But, very important to get the Methylcobalamin B12, not just plain B12. They are available in 1000 and 5000 mcg, to be taken daily. Consult with your doctor, of course, but I am convinced this is better than shots. At least so far!