injections of b12 are given in the treatment of Vitamin Injections: What You Need To Know B12 Shots vs. IV Infusions:

Am J Physiol

Serious side effects are rare but may include allergic reactions, shortness of breath, and severe dizziness

Diagnosis, Treatment and Long-Term Management of Vitamin B12 Deficiency in Adults: A Delphi Expert Consensus

POST-PUBLICATION REVIEW Elastic lifting of the upper and lower neck is performed after elastic neck lifting and neck lifting with safety pins

Treatment Options for Vitamin B12 Deficiency Treatment of vitamin B12 deficiency in the UK is guided by the underlying cause, severity of deficiency, and presence of neurological symptoms, following recommendations from NICE and the British National Formulary (BNF)

A very common issue is a pinched nerve in the neck (cervical radiculopathy)