A member asked:

Today i injected 800 mcg of b12, my urine color was a little bit darker than before and my kidney hurted me is it normal or should i stop taking b12?

A doctor has provided 1 answer

Vitamin B 12: There is seldom a need for anyone with a normal diet in the usa or canada to need supplemental vitamins of any kind. With B12 it may take several years to become low if you have no gastric acidity due to medications or illness or you have pernicious anemia or infection with the fish tapeworm. Don't know what this has to do with flank (if it is really your kidney) pain, but would stop.

Answered 6/24/2014

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