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Glutathione synthase adds glycine to -GC resulting in glutathione formation

Similar to vitamin C, vitamin E has also been identified as an antioxidant that protects against oxidative stress-associated eye diseases such as cataracts and glaucoma (58)

Writing in the journal Antioxidants , researchers from Canada and Australia noted that previous studies showed standard oral glutathione may not effectively raise levels in the body for healthy individuals

Glutathione S-transferases gene polymorphisms and risk of male idiopathic infertility: A systematic review and meta-analysis

Riboflavin is also important in the metabolism of iron