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For diabetic wound healing, which is notoriously slow and prone to complications, GHK-Cu incorporated into collagen dressings produced dramatically better outcomes: higher glutathione and ascorbic acid levels at the wound site, better epithelialization, and significantly more active fibroblasts and mast cells compared to standard dressings

The FDA's staff reviewers had last month said there is little evidence to support the safety and effectiveness of these peptides for their intended uses and flagged a lack of adequate human clinical trials, in contrast to Kennedy's public support

J Transcult Nurs

It may be promising, but it is not yet proven.