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The margin between therapeutic and toxic doses is extraordinarily wide, and the most common side effects are mild and manageable
Compared to other research peptides, GHK-Cu occupies a unique position as the only peptide that both broadly modulates gene expression and directly delivers an essential trace element (copper) to target cells
GHK-Cu remains primarily a research-stage compound
Glutathione IV therapy can aid in recovery by reducing inflammation and promoting muscle healing, ultimately enhancing performance and endurance
doi: 10.3389/fphar.2025.1737199 Received 01 November 2025 Revised 21 December 2025 Accepted 29 December 2025 Published 15 January 2026 Volume 16 - 2025 Edited by Dawei Chen, University of Kiel, Germany Reviewed by Eveljn Scarian, University of Pavia, Italy Hong Cheng, Yangzhou University, China Updates Copyright 2026 Knudsen, Tadje, Coggins and Venketaraman
