when b12 injections don't work Why aren't my b12 shots working : r/B12_Deficiency How to Give a B12

Thaw individual aliquots overnight in a refrigerator never at room temperature

Indications and Usage for Cyanocobalamin Cyanocobalamin is indicated for vitamin B 12deficiencies due to malabsorption which may be associated with the following conditions: Addisonian (pernicious) anemia Gastrointestinal pathology, dysfunction, or surgery, including gluten enteropathy or sprue, small bowel bacteria overgrowth, total or partial gastrectomy Fish tapeworm infestation Malignancy of pancreas or bowel Folic acid deficiency It may be possible to treat the underlying disease by surgical correction of anatomic lesions leading to small bowel bacterial overgrowth, expulsion of fish tapeworm, discontinuation of drugs leading to vitamin malabsorption (see Drug Interactions), use of a gluten-free diet in nontropical sprue, or administration of antibiotics in tropical sprue

Despite those scary possibilities, Hemphill-Bryant has reassuring info: Most people get all of the B12 they need from their diets

Lindenbaum J, Rosenberg IH, Wilson PW, Stabler SP, Allen RH: Prevalence of cobalamin deficiency in the Framingham elderly population

Lidocaine patches provide localized relief