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In most skin-focused or cosmetic-focused research discussions, GHK-Cu vs BPC-157 usually favors GHK-Cu because of its stronger association with collagen, fibroblasts, and dermal remodeling

Two fatal AEs were reported, including 1 due to dyspnea and another due to NSCLC progression

The safety profile was consistent with GLP-1 receptor agonists, primarily featuring transient, mild-to-moderate gastrointestinal adverse events (e.g., nausea, 55%), with low discontinuation rates (6-8.4%)

While wild-type BPC157 and other alanine-substituted peptides significantly enhanced proliferation, the P3A mutant completely lost this activity (Fig