what are the side effects of a b12 injection Vitamin and Safety Why do I feel worse

Because Vitamin B12 is essential for the protective sheath covering your nerves (myelin), a lack of it can cause nerves to misfire

The FDA-approved label tells doctors to recheck B12 every two to three years while someone stays on the drug

Some researchers add an extra 0.1mL of bacteriostatic water to compensate, accepting a slightly lower concentration (3.23mg/mL instead of 3.33mg/mL) in exchange for recovering nearly all the peptide

Metformin can interfere with your ability to absorb vitamin B12

Unless you're using the entire vial in a single day, always use BAC water

## **HCPCS code J1642 documentation requirements** As with any HCPCS code, please make sure you check your insurer's coding guidelines, requirements, related policy articles, and local coverage determinations to ensure you have the sufficient documentation you need to file a claim