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How This Compares to Other Research This review builds on and connects to a growing body of copper peptide research: Pyo, Won, Kim et al
A 2023 clinical trial demonstrated this relationship: high-dose nicotinamide riboside supplementation at 3,000 mg daily increased blood NAD+ levels five-fold while maintaining stable glutathione and GSSG levels [12]
Nature 614 , 349357 (2023)
In a randomized clinical trial involving older adults, GlyNAC supplementation improved glutathione status while also improving markers of oxidative stress, inflammation, mitochondrial function, muscle strength, and walking speed.57 58 Additional studies have reported improvements in several other measures associated with healthy aging, though the overall body of evidence remains relatively small compared with more established uses of NAC.34 Pure Encapsulations delivers 1,800mg each of NAC and glycine per serving, making it one of the highest-dosed products in this guide
These were all adult subjects so that gives you an idea of serving size to work from
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