B12 Injection Kit: Syringes & Needles & Alcohol Wipes Medbasic How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust Not all shots are the same here's a guide Injections are a fast, effective way to deliver medications, nutrients, and vaccines directly into the bodybut not all injections are the 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 BD 309575 Syringe with Needle 3cc Luer Lock Disposable 21G x 1" Sterile Single Use Syringe for General Injections, 100 BX CIA Medical