b12 pen injection Cyanocobalamin (Vit B12) for Pets B12 Deficiency Neurological Symptoms: UK
Description
The strongest data comes from Harshini Neelakantan, Stan Watowich, and colleagues at the University of Texas Medical Branch (UTMB)

no pharmacy trips required
Many patients then receive maintenance injections about once a month (or in some cases every 2-3 months) to keep their vitamin B levels in the normal range

It is important to understand both common and rare adverse reactions before beginning treatment

Administer IM or SQ
