are vitamin b12 injections better than pills Injections: they more effective supplements? The Advantages of B12 Injections
Description
Vitamin B complex injections are therefore used as supportive therapy where functional insufficiency, increased demand, or absorption concerns are suspected, following clinical assessment

If you have low B12, this is likely true but if you dont have low B12, dont count on it

2.1.1.1 All- trans retinoic acid (ATRA) CD38 expression can be modulated both in vitro and in vivo through the nuclear retinoic acid receptor ( in vivo use, has proven effective in enhancing CD38 levels in several ex vivo myeloma cell preparations, leading to improved efficacy of therapeutic antibodies ( in vivo efficacy in combination with Daratumumab was called into question in a clinical trial involving relapsed/refractory (RR) MM patients

Regular injections help replenish these levels and sustain overall health
