why does my b12 injection hurt Vitamin Are Vitamin B12 Shots Right
Description
NHS treats Vitamin B12 deficiency with injections of Vitamin B12

Uses Immunization & Vaccination: COVID-19, flu shots, pediatric vaccines, allergy and travel immunizations
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It works by blocking an enzyme called NNMT (nicotinamide N-methyltransferase)

Folate and vitamin B12 status in the Americas
