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Yes, when sold strictly as a research reference material for laboratory and in vitro use
We usually think of these chemicals like lycopene, tannins, phenols, lignans or quercetin, for example as antioxidants even though the body doesnt make them on its own
Reported or proposed issue Liver or metabolic changes Evidence source Animal studies and pathway theory Known or theoretical
This aggressive first-pass effect leaves very little intact NAC to circulate systemically to the brain or peripheral muscles
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