Although there seem to be no recorded cases of Vitamin B12 overdose, it may not be a good idea to get B12 injections during pregnancy
None of these pathways directly substitute for another, which is part of why researchers interested in a fuller picture of metabolic regulation may look at all three within the same body of literature not to combine effects, but to understand how separate systems might interact at a mechanistic level
Diabetologia 60 , 296305 (2017)
Crohns & Colitis Foundation
There are concerns about adherence to oral treatment, for example, if the person: Is older, is or has recently been in hospital and has either multimorbidity or frailty
High-dose vitamin C IV treatment offers varying levels of therapeutic benefits depending on the dosage administered: 10 Gram Dose A moderate dosage recommended for supporting immune function, boosting energy levels, and enhancing overall well-being