This is the same distinction we make in our list of injectable peptides : FDA-approved injectables, compounded prescription products, and research-grade peptides are different categories
KPV is the tripeptide Lys-Pro-Val, the C-terminal sequence of -MSH, investigated in cell models for anti-inflammatory activity, partly via NF-B signalling [6]
Injecting unregulated peptides carries serious side effects such as injection-site infections, scarring, water retention, joint pain, fatigue, and potentially fatal allergic reactions
Matrixyl is the trade name for palmitoyl pentapeptide-4 (Pal-KTTKS), a five-amino acid peptide attached to a palmitic acid chain for enhanced skin penetration
doi: 10.1371/journal.pbio.1001597 19 LinDTSDavisNGConibearE
Any use outside of its approved labeling is considered off-label and is prescribed only when medically appropriate