Vitamin B12 Deficiency Vitamin B12 deficiency happens when the body does not have enough vitamin B12. Vitamin B12 is important for making healthy red blood cells and keeping nerves Oral Treatment Pernicious Anaemia Society Solved Vitamin B 12 replacement shots for 6 months or longer Chegg.com Vitamin B 12 3000 mcg Injection, 100 mL Petco
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