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A 2016 comparative study published in Nature Scientific Reports directly compared copper compounds and found GHK-Cu non-cytotoxic across all tested concentrations up to 5,800 micromolar over 72 hours

Individuals considering nebulized glutathione should consult with their healthcare professional to determine if it's appropriate for their specific condition and to receive guidance on proper dosing and administration

doi: 10.1134/s0006297907120139

The Benefits of Glutathione Antioxidant Protection : Glutathione neutralizes free radicals, helping to protect cells from oxidative stress
