They consider the patients health history, how severe the deficiency is, and any conditions that might affect how well the body absorbs B12
In this situation, it can be challenging to demonstrate B12 deficiency even when there are typical symptoms (including neuropathy-like paraesthesia and numbness), as serum B12 concentrations may be just within, or sometimes above, the normal range due to the oral supplementation
Because these injections are delivered into the muscle, they are absorbed more directly and predictably than oral supplements
When someone is genuinely deficient, they may notice improvement in energy or mental clarity within a few days, though this varies from person to person and is most likely in people who were low to begin with
Not ever doing this before, I wasnt sure what the process was but he walked me through it all including discussing my health history so he can suggest a drip that would benefit me