vit b12 injection trade name CYANOCOBALAMIN INJECTION, USP 30000 mcg/30 mL (1000 mcg/mL) 30 mL VIAL Animal NDC 57319-502-05 Vitamin B12
Description
Sometimes it can be an early clue to a hepatic, renal, hematologic, inflammatory, or malignant process

Blood levels may not be sensitive enough to accurately reflect what is happening at the tissue surfaces where the hyperexcitability of the nerve occurs
M.et al

Getting B12 into your body well is key for it to work

HOCBL, hydroxycobalamin

Vitamin B12 is easy to find in animal products like meat, eggs, dairy, and fish