why do b12 injections sting Vitamin Best Vitamin B12 Injection Sites:

Eventually, the formation of abnormally large red blood cells (macrocytes) with reduced ability to carry oxygen from enlarged cells (megaloblasts) in the bone marrow, gives rise to anaemia

The original Cell Metabolism discovery paper established that MOTS-c regulates insulin sensitivity through this pathway, and later work in Nature Communications by Reynolds et al

Pathways An online resource that allows GPs and nurse practitioners and their office staff to quickly access current and accurate referral information, including wait times and areas of expertise, for specialists and specialty clinics

Conclusions B12 injections are one of several prophylactic B12 options now available for those with altered gastric acidity and/or Intrinsic Factor