b12 injection oil based Vitamin B-12 Injection, 3,000 mcg/mL boost metabolism and help burn fat. Organic Vitamin B12 1000 mcg

K.et al (2007)

Chemical exposures Exposure to high levels of metallic elements in pesticides, insecticides, paints (lead), and seafood (mercury) can result in a metallic taste in the mouth if the body absorbs these chemicals

The Pur Health exclusively uses pharmaceutical-grade B12 in two forms: methylcobalamin (the active, readily-usable form) and cyanocobalamin (the stable, synthetic form your body converts)

Anti-CD38 antibodies: a success story in multiple myeloma and future perspectives in NAD replacement therapy CD38 is highly and uniformly expressed at the cell surface of MM cells, and at lower levels in normal lymphoid and myeloid cells, and in some tissues of non-hematopoietic origin [38, 41-49]

Check packaging container for expiration and also inspect formulation that either it is showing signs of expiration or not