The duration of results varies
There are many ways to gain B12 through meals
Some people feel nervous or worried most of the day
Furthermore, the absence of standardized formulations complicates dose uniformity and treatment reproducibility, as differences in concentration, excipients, or stability across preparations can materially influence therapeutic efficacy and safety outcomes
Thomsen MS, Kostrikov S, Routhe LG, Johnsen KB, Helgudttir SS, Gudbergsson JM, Andresen TL, Moos T (2025) Remodeling of the brain angioarchitecture in experimental chronic neurodegeneration
Some patients need weekly injections to maintain steady benefits (like for a weight loss program), while others might schedule treatments monthly