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Sn phm khng phi l thuc v khng c chc nng thay th thuc cha bnh.
Targeted delivery of copper(II) ions directly to target cells, GHK-Cu upregulates collagen type I and III synthesis, modulates matrix metalloproteinase (MMP) enzymatic activity, and stimulates endogenous antioxidant gene pathways in cell culture models
The mechanisms involving nitric oxide stimulation are theoretical for many peptides and not well-established in human ED studies
A few people reported that they had not noticed any improvement in their skin after using it for 2 weeks to a month
These findings are intriguing yet still incomplete
Hsu WH, Han DS, Ku WC, Chao YM, Chen CC, Lin YL
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