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These symptoms typically worsen over time, progressively reducing independence and cognitive functioning

"Studies, which also included children, did not report serious side effects," says Gasic

However, there are no relevant research reports on the mechanism of action of GPX6, which may be related to the oxidative stress response involved in glutathione

Commercial serums offer 12-24 months unopened shelf life with professional preservative systems and 6-12 months post-opening depending on packaging (airless pump best), while DIY serums last only 1-2 weeks refrigerated without professional preservatives

doi:10.1136/emj.16.2.84