b12 defiency glutathione synthesis Dietary (Phyto)Nutrients for Support Amino Acid Biosynthesis: Overview and
Description
B12 injections are not a general energy booster they correct a specific deficiency

42 KomatsuM.KurokawaH.WaguriS.TaguchiK.KobayashiA.IchimuraY.et al (2010)

A definitive test for pernicious anaemia isn't just one single blood test

(ii) contrasting the exacerbation of the inflammatory response

Who will administer my treatment

For others, their system may need a more regular top-up to maintain optimal levels
