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Who Should Avoid It Known copper sensitivity or Wilson's disease Active skin infections at application site Pregnancy or breastfeeding (injectable) Stop Right Away If You Notice Severe skin irritation, burning, or persistent redness Allergic reactions (rash, swelling, difficulty breathing) Unusual skin discoloration or staining Persistent metallic taste (injectable) Worsening of skin condition after 4-6 weeks Milder Signs to Watch For How Long Should a GHK-Cu Cycle Last

Phase 2 data published in 2023 demonstrated average weight loss of 24.2% at the highest dose, surpassing both Tirzepatide and Semaglutide

However, the studies are often short in duration, involve small sample sizes, or use inconsistent outcome measures, making it difficult to draw firm conclusions

Regulation of cholesterologenesis by the oxysterol receptor, LXRalpha