What syringe volume and needle gauge and length are appropriate for intramuscular vitamin B12 (cobalamin) injection in an adult, and what is the recommended dosing regimen? 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 Self injecting vitamin B12. Quick and painless jabs after a B12 by Dr Caroline Palmer Medium Best Vitamin B12 Injections Dosage And Frequency PA Relief
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b12 injection syringe and needle size How to self-inject intramuscular vitamin B12 - Overview