b complex b12 injections Vitamin Complex: Package Insert / Prescribing Information swine and sheep. Madavi aesthetics - Vitamin B12
Description
Insurance may cover them for medical issues like B12 deficiency but not for weight loss or energy purposes
Vitamin B12 as a treatment for peripheral neuropathic pain (Julian et al., 2020) systematic review

That is fine

Hanke S, Mann M
Many people wonder whether a sublingual supplement can be as effective as an injection

FAQ What is the function of the NNMT gene
