because selenium is part of the enzyme glutathione-peroxidase Selenoprotein Glutathione Peroxidase 4: From Molecular Mechanisms to Novel Therapeutic Opportunities Small molecule selenium-based glutathione peroxidase
Description
K.DaltonP.DingX.FinelM.2009Human UDP-glucuronosyltransferase UGT2A2: cDNA construction, expression, and functional characterization in comparison with UGT2A1 and UGT2A3.1744-687217446872 102

There are also a variety of methods for B12 supplementation, like chewable tablets, sprays, or tablets and liquids placed under the tongue

10.1001/jama.1926.02680070016005 35 MolloyA
Mehanna R, Jankovic J