what types of b12 injections are there Shots vs. IV Infusions: is the difference? How to Choose the Best

For instance, the NICE guideline says that with total B12 values of over 350 ng/L,0 deficiency is unlikely

It is believed deficiencies are not always detectable on blood tests

Common experiences after the first injection include: Mild soreness or redness at the injection site (usually resolves within 12 days) Slight improvement in energy levels or mood No immediate noticeable change (particularly common if deficiency is severe) Rarely, mild side effects such as headache or dizziness Some patients report their urine becoming brighter or more intensely coloured following injection, which occurs because excess B12 is excreted renally

Cntent reviewed by a licensed clinician