B 12 injections WithCare Clinic B12, Biotin & Pabrinex Camilla Seton Medical and Cosmetics What is a B12 injection? , A B12 injection delivers a concentrated dose of vitamin B12 directly into the muscle for rapid absorption and effective replenishment of levels in the body., Vitamin B12 B12 deficiency: causes, symptoms, and treatment with injections Mind Matters Weight Loss Clinic posted on the topic LinkedIn How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust