inject vitamin b12 intramuscular or subcutaneous Best Injection Sites: Where to B12 · PA Relief Optimal B12 Injection Sites for
Description
Each method has its own benefits and uses

However, as with any medication, adverse effects can occur, and patients should be informed of potential reactions before commencing treatment
Was it a dietary choice, like a vegan or vegetarian diet without proper supplementation

Use single-use sterile equipment for every vial puncture
