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Age-supporting benefits, scar healing, skin firmness, post-procedure recovery, and barrier signalling

10.1016/j.arr.2017.02.004 Ageing Res Rev

Oral supplements at typical doses cannot reliably match that

Protocols are entirely community-developed, with doses extrapolated from cell culture bioactivity data and molecular weight calculations

Danish drugmaker Xellia Pharmaceuticals also referenced the ICH Q3A and Q3B guidelines, which it said exclude peptide, fermentation, and semi-synthetic products, leading to a knowledge gap in how impurity limits should be established for the antibiotics referenced in FDA's guidance