It works in tandem with an enzyme called glutathione peroxidase (GPx) to clear toxic peroxides from the cell
Lower back pain, changes in urination, swelling in the legs or feet, and unusual fatigue are warning signs
10.1007/s00125-007-0793-y Summary Keywords vitamin B 12 deficiency, hyperhomocysteinemia, type-2 diabetes, glutathione, cysteine-block Citation Karamshetty V, Acharya JD, Ghaskadbi S and Goel P (2016) Mathematical Modeling of Glutathione Status in Type 2 Diabetics with Vitamin B 12 Deficiency
It also reduces interference with other products and increases effectiveness
As a result, if one of the alleles entails enzyme deficiency, about half the cells will be G6PD(+) and the other half will be G6PD(), although there is a large range of variation around that average for various reasons, not all of them fully known