Bottom line: Its almost impossible to become toxic on vitamin B12 unless you have kidney issues
Mullican SE, Tomaru T, Gaddis CA, Peed LC, Sundaram A, Lazar MA
Report any persistent, unusual, or severe symptoms to your doctor promptly so that your treatment can be reviewed and adjusted if necessary
How is Bacteriostatic Water different from Sterile Water
Comment: Several commenters supported our proposal to require that hospitals only use EDI 835 ERA transaction data to calculate and encode the allowed amounts, indicating that the proposal would enhance comparability across hospitals and improve the utility of MRFs
Packaging container: Amber Glass Made Multi-Dose Vial-Picture Courtesy: Vet-N-Pet DIRECT Multi-dose vials are used to dispense vitamin b12 injection for dogs and these vials contain preservatives to avoid instability in formulation