vitamin b12 injection route of administration Dose: 7 Guidelines for Adults Best Vitamin B12 Injection Sites:

When serum B12 falls in the gray zone, methylmalonic acid testing is recommended to clarify whether a functional deficiency exists

Your medical provider will customize your injection schedule based on the severity of your deficiency and how quickly your levels need to be corrected

Our Medicines Interaction Checker helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together

Then, they do weekly injections for a month

You should always tell your provider about: Current medications and supplements Known allergies Pre-existing medical conditions When to contact your provider: If you experience a persistent headache, severe muscle weakness, or a rash that lasts longer than 24 hours, please call your provider

Foods fortified with B12 and B12 supplements contain the free form of B12 so they are more readily absorbed