b12 dosage injection for adults CYANOCOBALAMIN INJECTION, USP 30000 mcg/30 mL (1000 mcg/mL) 30 mL VIAL VITAMIN B12 INJECTION 3000 mcg
Description
Possible side effects may include mild pain or swelling at the injection site, headache, nausea, or anxiety

As one does with their cat

Prescription medication

Li, J., Sun, W., Zhu, X., Mei, Y., Li, W., & Li, J