Is GHK Cu Legal? FDA Approved Peptides Neurogan Health Peptides! Update as of 4.15.26 from the FDA. We will know more in July. This will allow these previously labeled category 2 research peptides to category 1 and allowable for compounding by FDA Peptide Reclassification 2026: What Researchers Want FDA Warning: Hidden Dangers of Smuggled Tirzepatide GHK CU for Sale Tripeptide 1 3rd Party Tested US Made