The reported adverse reactions following parenteral administration of vitamin B12 include: Generalized : Anaphylaxis and death Cardiovascular : Pulmonary edema and congestive cardiac/heart failure during early treatment
Morris RC, Jr., Schmidlin O, Tanaka M, Forman A, Frassetto L, Sebastian A
The GSSG is further recycled back to GSH by another cellular enzyme called glutathione reductase (GR) by using NADH as the reducing equivalent [8, 11,12,13,14,15,16,17,18]
However, some potential risks include: Injection Site Discomfort: Bruising, swelling, or redness at the IV or IM injection site
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10.1007/s10787-017-0330-7 42 MasnecS.KokotA.ZlatarM.KalauzM.KunjkoK.RadicB.et al (2015)