Some studies have associated long-term Glutathione supplementation with lower zinc levels in some individuals, so periodic monitoring may be advisable with extended use
Recalls & Warnings September 08, 2020 Seller of "Diabetes Supplement" & More Warned for Drug Claims On August 25, 2020, the FDA issued a warning letter to Nutritional Supplements Corporation Inc following a review of the company's website, which found statements made about some of the company's products, including Vitadone, Diabrex, and Viadevita to be drug claims
References: Minich, D
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Document your symptoms to guide future supplement choices
Zinc- Zinc deficiency lowers the glutathione levels in the red blood cells (RBCs) but it is also crucial to know that because of its pro-oxidant property, high zinc can reduce the glutathione