how often can i inject b12 Best Vitamin Injection Site: Administering B12 Shots Vitamin B12 Injections — Anupa

Always tell every doctor you see that you are pregnant or nursing

Standard concentration: 0.5 mg/mL This is a common concentration used by many compounding pharmacies

When Injections Become Necessary If you cant absorb B12 from food, shots are a good solution

Especially because side effect severity can vary from person to person. But Basina said there are red flags to watch out for if youre taking a compounded drug: Signs of severe dehydration such as fainting and confusion or not urinating for eight hours

You should also steer clear of both of these medications if you have multiple endocrine neoplasia type 2 (MEN 2)