See below: There are many different causes of B 12 deficiency. If you are a vegan, taking oral vitamin B12 will suffice. If the deficiency is due to other causes, you may need to take B12 injections. See this site for more info. http://www.webmd.com/food-recipes/guide/vitamin-b12-deficiency-symptoms-causes
Answered 7/4/2014
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A doctor has provided 1 answer
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