vitamin b12 supplement or injection B-12 Injection, 3,000 mcg/mL, 100 mL at Tractor Supply Co Deficiencies may result in anemia Rx Vitamin B12 Injection 3000mcg/ml

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That means your body needs it to carry out lots of important functions, including (1, 2): Red blood cell formation DNA synthesis Brain and nervous system functioning Energy production (metabolism) Immune system health Risk Factors for Vitamin B12 Deficiency Your body doesnt produce B12 on its own

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Anemia develops from B12 deficiency, as the vitamin is engaged in the production of healthy red blood cells