b12 injection monograph VITAMIN 3000 mcg Best Vitamin B12 Injection Sites:
Description
96375 Comparison by Payer Type Medicare pays the least, commercial mid-to-high, Medicaid varies widely

Injections bypass the gut and absorb fast
If you do have to inject yourself, or have a family member inject you, find out the best places to do the injecting

A slight yellow-orange coloration or darkening does not indicate loss of efficacy

PMID: 31780780