A member asked:

I'm b12 def. i am getting injection every 8 weeks.. my friend is self injecting every day and gets injections from doc every 4 weeks.. that's to much?

A doctor has provided 1 answer
Dr. William Weirs answered

Specializes in Integrative Medicine

Probably overkill: The B12 issue is complex! There are reports of good clinical outcomes with megadose B12- but could this be placebo effect? Your current 8 week dosing sounds appropriate. Ask your doctor to order a serum or urine MMA level. That is the metabolite of B12. If that level is OK you are most likely at an adequate B12 dose. B12 is very safe and many people megadose- likely making expensive urine.

Answered 4/11/2015

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