Re: b12 deficiency
My levels are 400 and I have pretty severe symptoms. My neurologist gave me a shot of B12, but never had me follow up. I found a wonderful holistic MD who has me now on daily B12 shots for 30 days then 2 shots a week thereafter.
I really believe you need more then 1 shot every 3 months. From what I understand, the metho B12 are what you need to take, so make sure that is what you have.
Taking ant acid medication definitely depletes you B12 (I was just reading an article on this the other day). It is very common and that is probaby your reason for being deficient in that vitamin.
You should be just fine. But if you Dr refuses to give you more than 1 shot every 3 months, I would find another one.