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Is my B12 low for someone who is on 12 weekly injections? : r B12_Deficiency B12 Injections Specialist Near Me in Sacramento, CA 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 B12 Injection Dosage and Frequency: 7 Guidelines for Adults
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