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Neurology 78 , 13231329 (2012)

Within the stability range for copper peptides, but barely

A separate comparative study - measuring actual collagen production via skin biopsies - found that 70% of women using GHK-Cu showed increased collagen production after one month, compared to 50% for vitamin C cream and 40% for retinoic acid cream

Therefore it is not uncommon to see vegetarians or vegans present with vitamin B12 deficiencies

Oral KPV is effective, especially for gut inflammation

In bone tissue studies, the peptide has been shown to stimulate osteoblast activity and enhance bone formation in experimental fracture models