A member asked:

Taking 1000mcg sublingual b12 and 14mg iron for last 5 days. after taking within a hour getting tingling in feet and hands. lasts all day. b12?

A doctor has provided 1 answer

Possibly: Could be the B-12, or if you are taking a B-complex or Niacin also could cause this. Best to take methylated B-12 (Methylcobalamin) as best assimilated and utilized.

Answered 8/20/2014

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