There is After having a B12 shot, a person should monitor for adverse symptoms and seek medical help if they experience: severe pain at the injection site mild diarrhea a swelling sensation in the body temporary itching of the skin In rare cases, a person may also be at risk of: anaphylaxis pulmonary edema congestive heart failure peripheral vascular thrombosis, which involves blood clots polycythemia vera, which is a type of blood cancer If anyone experiences difficulty breathing, hives, or swelling, they need emergency medical help
Published studies used different routes, including oral and intravenous administration, so the amounts cannot be directly transferred between routes
Diagnosis typically involves blood tests including full blood count (showing macrocytosis), anti-intrinsic factor antibodies (which are specific for pernicious anaemia), and sometimes anti-parietal cell antibodies
But at First Choice Immediate Care, our medical team can quickly identify if you need a B12 injection with on-site testing and same-day evaluation
For more information about B12 shot benefits, check out this article from Medical News Today
Graber MD Updated: October 22nd 2022 Main Source of Information: Empower Overview of Cyanocobalamin (B12) Injection General Information Cyanocobalamin is a vitamin of the B-complex family, commonly known as cobalamins (corrinoids)