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what size gauge needle for b12 injection to use Syringes & Needles: A Comprehensive Guide what gauge needle to use Vitamin B12 Injections: Ideal Dosage & Frequency for Men's Health Is It Okay To Use A B12 Injection With Insulin Syringes? 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
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