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[DOI] [PMC free article] [PubMed] [Google Scholar] 48.Shahid M., Niazi N.K., Khalid S., Murtaza B., Bibi I., Rashid M.I

If you have cancer: In cancer, cysteine and glutathione may help tumor cells resist some types of chemotherapy.[ref] Talk to your oncologist or doctor about whether NAC or anything that boosts glutathione is a good idea for you

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Moderate concentration: 0.5% to 2% The moderate range captures the majority of effective copper peptide products

It is likewise a critical part of cleansing, removing toxins and heavy metals from the body

However, if you have particularly sensitive skin or known allergies to any ingredients, we recommend patch testing on a small area first