Vegetarians and vegans may need to take an over-the-counter B12 supplement to ensure they're getting enough, but people with vitamin B12 absorption issues may require prescription B12 injections
But if such changes persist, then contact a doctor
Common side effects include mild injection site reactions (such as pain, redness, or swelling), headache, flushing, dizziness, and nausea
Always confirm your vial contains bacteriostatic water, as this detail directly affects your storage timeline and injection frequency planning
This level of personalization is especially beneficial for chronic conditions like diabetes, where ongoing adjustments to treatment may be necessary