However, no Phase II or Phase III randomized controlled trials have been published as of 2026, meaning the full safety profile particularly long-term effects, drug interactions, and dose-dependent risks remains incompletely characterized
Eosinophilic Esophagitis (incidence 2%): injection site reactions, upper respiratory tract infections, arthralgia, and herpes viral infections
Because of these properties, glutathione has been studied and used medically (in controlled settings) for example, as a supportive antioxidant therapy in certain chronic diseases or alongside chemotherapy
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