The FDA is now reconsidering 12 peptides it previously placed in Category 2, a designation that blocks compounding pharmacies from producing them. The reasoning centers on safety concerns and limited data, but The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline GHK Cu Topical vs Injection Which is the Better Copper Peptide Form? The peptide conversation is shifting. Secretary RFK Jr. recently announced that the FDA plans to move 14 peptides from Category 2 back to Category 1 restoring FDA recognized status and making them