What Happens If You Inject B12 Wrong: 6 Red Flags How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust Intramuscular Injection Training Model with Liberia Ubuy Vitamin B1, B6, B12. Buttock injection Push Ep 04 @InjectionTips1 Taylor demonstrates the proper technique for administering an intramuscular injection. Locate the upper, outer quadrant of the buttock muscle Prepare the site with alcohol Insert needle all the IM Injection Technique for Medical Students