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As I elaborate on in my video The Symptoms of Vitamin B12 Deficiency , these include: Abdominal distention Chronic diarrhea Shortness of breath Swollen, red, painful feet Skin darkening Bilateral useless hand syndrome Numbness and tingling in the hands and feet Muscle cramps Dizziness Cognitive disturbances Difficulty walking Erectile dysfunction Fatigue Depression Psychosis Coma Blindness Vitamin B12 Deficiency Treatment Is A Vitamin B12 Shot Better Than Taking B12 Orally

Vitamin b12 is also called cobalamin

Lactating women are recommended to consume the amount of vitamin B12 as advised by the Food and Nutrition Board, National Academy of Sciences-National Research Council, which is 4 mcg daily