how often are b12 injections given Vitamin Shots Right for You? Compounded Cyanocobalamin (Vitamin B12) Injection

They are not for human consumption, clinical use, or any diagnostic, cosmetic or veterinary application

Vaccines Before commencing immunomodulators and biologic therapy, all patients should: be screened for latent infections, including hepatitis B, hepatitis C, HIV infection and tuberculosis have their immunity to vaccine-preventable infections confirmed, particularly infections that require live vaccines, as these may be contraindicated in patients receiving immunosuppressant therapy

And they reported vitamin B12 supplementation accelerated tissue repair in the mouse model of ulcerative colitis

Best choice: your provider can recommend the right option based on your B12 level, the cause of your deficiency, and your symptoms