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For example, if you look on Clinicaltrials.gov, there are only two studies that even mention BPC-157, says Cushman

Copper peptides like GHK-Cu are proven to help with barrier repair and for overall skin health

Most side effects stem from dehydration or taking the medication incorrectly, making proper hydration and following dosage instructions your best prevention strategy

The most studied is GHK-Cu, which stands for Glycyl-L-Histidyl-L-Lysine-Copper

Also, it is unknown at this time whether supplements have the same effect as lutein and zeaxanthin obtained through food sources

hCG (human chorionic gonadotropin) is an unrelated fertility hormone