I went to my internist, who specializes in cardiology, on 10/8. I mentioned to him that my two leftmost toes have felt slightly numb for almost a year. He added a B12 test to my other blood work. My RBC came back 4.52 (fine) and my B12 was 212 (barely in the normal range). My doctor prescribed four injections of 1000 mcg of B12 on consecutive days followed by one such injection monthly forever. I got the first shot at his office and gave myself the next three. I asked when I would be retested and was told "never."

I have no other symptoms that would suggest a B12 deficiency. Is this one shot a month forever treatment with no further testing appropriate? I would at least like to explore the possibility of daily 1000 mcg B12 lozenges at some point as an alternative to injections. But maybe I don't really need B12. Should he have done more tests?

My internist is no expert on B12, as he was telling me that you get it from lots of different foods, including vegetables.
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replied April 29th, 2019
Thank you for asking at Ehealth forum!

I read your question and I understand your concern.
Peripheral neuropathy which appears first in feet ,
is a usually the first sign of B12 deficiency.
Oral vitamin B12 are good enough after correction of deficiency.
I hope it helps. Stay in touch with your healthcare provider for further guidance as our answers are just for education and counselling purposes and cannot be an alternative to actual visit to a doctor.
Take care
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