Instruction Guide for Intramuscular (IM) Self injection of B12 Methylcobalamin 1mg 5mg How to Give Yourself a B12 Injection ThinWorks A vitamin B12 injection is a shot that delivers B12 directly into your muscle, helping your body absorb it quickly (especially if your body struggles to absorb it from food or tablets) B12 SELF INJECTION GUIDE IM SELF INJECTION HOW DO I SELF INJECT? HOW TO SELF INJECT B12 Dr Ayanna Knight Cosmetic Skin Care, Health & Wellbeing Botox Brighton