Laboratory studies using chondrocyte cultures and animal models have investigated how the peptide influences pathways involved in extracellular matrix regulation and tissue repair [4]
Sampson CM, Dimet AL, Neelakantan H, et al
GHK-Cu is widely referenced in biochemical and cellular research for controlled experimental studies, valued for its high purity, stability, and reproducible performance in laboratory environments
Ta1 is usually given on a separate schedule (twice weekly rather than daily)
But the direction of expert opinion is unambiguous: as of this writing, neither peptide is an approved drug, neither sits on the positive 503A list, and the agencys stated position is that the safety and effectiveness case has not been made