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doi: 10.1016/j.bioactmat.2025.06.027 196 ZhangL.ZhangY.MaY.WangZ.WanZ.SongY.et al
Directions of Use Adults: Start with 1 capsule twice daily with food and gradually increase to 2 capsules twice daily with food or as directed by your health-care practitioner
For topical research context, PepPal breaks down GHK-Cu skin product options
It includes a 4-6 week loading phase (higher doses, typically twice weekly), followed by a 4-6 week maintenance phase (lower doses, typically once weekly), then a 4-8 week off period before considering another cycle
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