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Each production batch undergoes LC-MS molecular identity confirmation together with RP-HPLC purity analysis and, where applicable, UPLC verification

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Although a large body of research has shown the cytoprotective function and biocompatibility of NZs, metal overload-induced metal ion release is still thought to be a potential source of adverse effects on normal tissues

But as questions grow over whether many of them are safe or work as advertised, regulators in the United States are set to decide whether some of them should become available through licensed pharmacies