Vitamin B12 injections are generally safe, but some people may experience mild side effects such as pain or redness at the injection site, headache, dizziness, or nausea. Rarely, more serious reactions can occur, so it's important to seek medical...
Vitamin B12 injections are generally safe, but some people may experience mild side effects such as pain or redness at the injection site, headache, dizziness, or nausea. Rarely, more serious reactions can occur, so it's important to seek medical...