Vitamin B12 injections are generally considered safe and well-tolerated, with minimal side effects
Intramuscular (IM) Needles Intramuscular needles are designed to penetrate deep into the muscle tissue
So, for whatever reason you have chosen to begin your B12 injections, always keep in mind that you are doing a great service to the overall health of your body at a cellular level
These can include pain or redness at the injection site, mild diarrhea, and a feeling of swelling over the entire body [1]
Transcriptional regulation of adipogenesis
In contrast, SQ shots are almost painless, carry no risk of nerve injury, and are effective for delivering B12