However, the B12 itself can stay in your system longer, with effects on red blood cell production and nerve health lasting for weeks or months, depending on your deficiency and injection frequency
Side effects are rare but may include: Mild pain or redness at the injection site Headache Dizziness Upset stomach Reactions are highly uncommon
The choice of treatment should be individualised, considering the underlying cause, symptom severity, patient preference, and practical factors such as access to healthcare facilities for regular injections
For example, a broad and potentially noisy search for medications might be followed by a narrower search for oral medications. This is done to examine whether the narrower search has sufficient coverage
Can Brenda Johnson, MATS, PA-C, combine B-12 injections with other treatments