The BSH couldnt advocate patients being instructed on self-injection during the pandemic as it would involve medical professionals and patients risking cross infection of the virus, though this is something that can be considered once the pandemic is over
However, injections are more effective for people who cannot absorb B12 through their stomach
PMID: 38987879 3 Addressing the Gaps in the Vitamin B12 Deficiency 2024 NICE Guidelines: Highlighting the Need for Better Recognition, Diagnosis, and Management of Pernicious Anaemia
Vitamin B12 is needed to form red blood cells and DNA
DOI: 10.1016/j.bcp.2018.05.003
Educate patients about warning signs such as difficulty breathing, face or throat swelling, hives, fainting or severe dizziness after a shot