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Cosmetic-grade GHK-Cu generally has lower purity specifications, often acceptable for topical applications but unsuitable for precise scientific studies

others source from compounding pharmacies or other supply chains COA availability and documentation standards vary by vendor Community sources describe the vendor channel as the most common procurement route for peptide research-context use

Brzozowski T, Konturek PC, Pajdo R, et al

CagriSema is an investigational injectable medication taken once per week that is being researched to help adults with obesity or overweight lose weight, including those living with type 2 diabetes

The results are mixed, so more research is necessary

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