Unfortunately, chances are that vitamin B12 deficiency has already harmed your nerves by the time you experience symptoms
If symptoms persist beyond 48 hours or are severe, contact your provider
Medications : Some medications, such as metformin and proton pump inhibitors, can interfere with B12 absorption, necessitating more regular injections
An oral B12 supplement often delivers far less than the label suggests
Subacute combined degeneration with high serum vitamin B12 level and abnormal vitamin B12 binding protein: new cause of an old syndrome
In order for your cells to function optimally, they require sufficient delivery of oxygen and nutrients and there is a big interplay between vitamin B12, folate, and iron for erythropoiesis (red blood cell formation) 2