Instruction Guide for Intramuscular (IM) Self injection of B12 Methylcobalamin 1mg 5mg Dr. prescribed B12 injections. Pharmacy only gave me vials. Where do you get your needles and syringes? What size?? Where do I inject? : r B12_Deficiency How to Administer an Intramuscular Injection at Home How to Give a B12 Injection: Step By Step Instructions
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