can you get b12 injections from pharmacy at Olympia Vitamin B12 Injections vs. Supplements:
Description
And safety data across all human trials was excellent

AOD9604 is strictly for laboratory research use only and is not approved for medical, cosmetic, or dietary applications.

Front Immunol 5:140 Atanackovic D, Yousef S, Shorter C, Tantravahi SK, Steinbach M, Iglesias F et al (2020) In vivo vaccination effect in multiple myeloma patients treated with the monoclonal antibody isatuximab

The Vitamin B12 coenzymes are very unstable in light
