can i get b12 injections at home How to Self-Inject Vitamin how often do you have

Symptoms can develop quickly and include: feeling faint or lightheaded difficulty breathing or wheezing rapid heartbeat confusion anxiety clammy skin collapsing or losing consciousness hives swelling stomach pain, nausea, or vomiting If you or someone nearby develops these symptoms, you should: Check to see whether they have an epinephrine pen

Tell your prescribing doctor if you have any of these conditions, which can increase B12 shot side effects: An allergy to cobalt Kidney disease Severe megaloblastic anemia Side Effects from B12 Shots The most common B12 shot side effect is swelling at the injection site

Medicare pays approximately $18 to $25 per injection administration in an office setting under the 2026 Physician Fee Schedule, using a conversion factor of $33.40 for non-APM participants

Those with confirmed deficiency may require parenteral (injectable) B12, as oral supplementation may be inadequate