While oral supplements can be a way to replace B12, oral supplements dont always absorb in the digestive system
This section will outline the most common reactions you might experience, discuss less frequent but important side effects, and clarify the warning signs that indicate you should contact your clinician immediately, such as a severe allergic reaction
In people without pernicious anemia, about 0.5 g/day of B12 is reabsorbed by enterohepatic circulation in which B12-containing bile is secreted by the liver into the digestive tract where the B12 is then reabsorbed via intrinsic factor
Thats where docs just give their scenarios of how theyve used and whats happened to their patients, what theyve seen
Tuffaha SH, Singh P, Budihardjo JD, et al