Its use in jowls is considered off label but it is very effective in this region, and in the hands of an experienced physician it should be safe
Larson CM, Clohisy JC, Beaul PE, et al
Initial Treatment Dosages for Severe Deficiency Adults with severe vitamin B12 deficiency often start with higher doses
Your provider should work with you to develop an individualized dosing and frequency schedule that works for you
Escalation (Steps 23, ~weeks 512): step to 4 mg, then 8 mg, roughly every four weeks, only advancing when the current step is comfortable
Your health conditions If you have certain health issues, that may influence which therapy we recommend