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The Biochemical Relationship (Simplified) NAD+ metabolism produces NADPH NADPH is required to keep glutathione in its active (reduced) form Active glutathione neutralizes oxidative stress Reduced oxidative stress helps preserve NAD+ levels In other words: NAD+ helps keep glutathione working
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Harpel PC, Chang VT, and Borth W (1992)
Within experimental models, the combination is commonly investigated for peptide-mediated signalling dynamics and receptor interaction mechanisms
A great study in the Journal of Cosmetic Dermatology compared a bunch of vitamin C derivatives and this derivative was the only one where the study said in terms of stability that it's "similar to AA"
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