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In the rats that received GHK-Cu, the researchers found an increase in total protein and collagen synthesis greater than that of the placebo group, demonstrating that GHK-Cu is able to increase extracellular matrix accumulation in wounds in vivo .28 Are GHK-Cu copper peptides safe

That means there are no guarantees about product purity, safety, or proper dosing

Savidge, T

Specifically, the acceptable limits were defined as precision (CV) 15% and accuracy (recovery) within 85115% for medium and high concentration levels, with slightly wider limits (CV 20%, recovery 80120%) permitted at the low concentration levels close to the LOQ

Proc Natl Acad Sci USA 113:77507755