vitamin b12 by intramuscular injection rather than orally Injections at Olympia B12 Shot | The IV
Description
No, B12 injections are licensed medicines used to treat confirmed vitamin B12 deficiency, whilst lipotropic injections are unlicensed combinations marketed for weight loss without robust clinical evidence

When compared to chemotherapy alone, the combination group in this trial exhibited a longer median PFS and more confirmed responses

doi: 10.1038/srep33310 20 TsaiKCullenBR

CPT 99211 is a nurse-level E/M that implies no physician was present