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[1] What GHK-Cu does in cells and tissues Pickart and colleagues have spent decades cataloguing GHK-Cu's biological effects

The collagen-building response peaked at 1 nanomolar

Adult men can meet their needs by consuming 2.6 mcg of vitamin B12 per day (1)

Its stability in laboratory conditions and well-understood chemical structure make it a valuable reagent in biochemical research

However, GHK-Cu provides trace copper amounts (micrograms) versus AREDS2's 2mg

And that's very unfortunate because it's one of the most important skills you could ever have with anything, is being able to focus and being able to perform under pressure