G., Farghaly, H
6-IN-1 GHK-CU BEAUTY COMPLEX: GHK-Cu Copper Peptides are combined with hyaluronic acid, marine collagen, vitamin B3 (niacinamide), biotin, and grape seed extract to provide systemic beauty support
Across included studies, substantial variability existed in peptide formulation, dosing strategy, route of administration, and outcome reporting, limiting comparability and precluding quantitative synthesis
These resources include: A CISP Checklist Implementing Revised List (available now - originally published January 2021) Athlete and ASP Guide to the 2025 List (available now) Languages and Formats The 2025 Prohibited List, the 2025 Summary of Modifications and Explanatory Notes, and the 2025 Monitoring Program are available for download on WADAs website in English, French, and Spanish
What the evidence shows The candid summary is that glutathione's foundational biology is solid and its clinical wellness claims are thin