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Most copper peptide products for hair use GHK-Cu by default

In addition, peptides have the advantage that they can be chemically synthesized

10.1038/cddis.2014.155 Cell Death Dis

I also have been reading many people reporting the same symptoms of shortness of breath and/or heart racing, such as you are experiencing

Patients often report reduced hunger, smaller meal sizes, fewer cravings, and lower overall caloric intake
