why give b12 injections Shots in Friso, Sherman, Anna. and Sunnyvale, TX B12 Shots vs. IV Infusions:

However, if low B12 is present for a long time, it can lead to problems such as anemia, nerve symptoms, and difficulties with concentration or balance

To change B12 dosage from mcg to mL, you need to know the solutions concentration

doi:10.1016/j.nut.2016.05.009 Ali MY, Sina AA, Khandker SS, et al

Long-term use should be approached cautiously because some patients report mild side effects like nausea or injection site discomfort, and research on prolonged use is limited. To minimize the risk of adverse reactions, always get the injections from a registered physician

As with all medications, there are some small risks to consider when choosing B12 injections

This exceptional selectivity profile enables researchers to attribute observed effects specifically to NNMT inhibition, rather than off-target activities that plague less specific compounds