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Unlike many peptides that have only injectable research data, GHK-Cu has been tested in published human clinical trials specifically as a topical application with outcomes that compared favorably against gold-standard actives
Research has investigated its role in sleep-wake cycle regulation, pituitary hormone secretion, stress adaptation, and nociceptive pathways
However, more research is needed to confirm these benefits
In rare cases, semaglutide may be linked with Gallbladder problems, kidney injury, Pancreatitis, or worsening Diabetic Retinopathy