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Nurx is a game changer
A recommendation is not an approval, and FDA approved claims remain off limits
More than 90% of dietary TRP is metabolized via the KP, primarily in the liver [171], generating circulating KYN that readily crosses the BBB, whereas downstream metabolites such as KYNA, QA, and 3-HAA remain largely trapped within the CNS once synthesized [20]
The topical concentration determines how much peptide reaches dermal tissue per application
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