Your body needs vitamin B12 to stay active and healthy
Headache Mild diarrhea Mild pain or redness at the injection site Nausea Serious or rare side effects Stop taking Vitamin B12 Injection and seek immediate medical attention right away if you experience any of the following: Allergic reactions, including angioedema, hives, and trouble breathing Signs of heart problems, including swelling, rapid weight gain, and shortness of breath Signs of hypokalemia, including muscle weakness, slow or irregular heartbeat Contraindications: This is not an exhaustive list of contraindications
Both needle length options work for this protocol, and the user can try both to find their preference
If you want to reduce risk, start there
Response: Regarding the commenter's concern about low case volumes, we refer readers to the CY 2026 OPPS/ASC proposed rule (90 FR 33771) for discussion of our consideration of low case volumes prior to proposing this measure for adoption in the REH setting