Vitamin Injection Education
Vitamin B12 Injections: Indications, Screening and Technique
B12 therapy is legitimate medicine, which means legitimate screening, prescribing and documentation.
5 June 2026 · 5 min read
Who genuinely benefits
Pernicious anaemia, malabsorption, post-bariatric surgery, metformin use and strict plant-based diets. Fatigue alone is not a diagnosis.
Screening before treatment
Baseline B12 and folate, a history of neurological symptoms, and awareness that treating without investigation can mask underlying pathology.
Technique
Deltoid or ventrogluteal intramuscular injection, 23-25G, at ninety degrees with appropriate skin antisepsis and dry time, then documented batch and site.