KPV and Immune Support: What Has Been Studied

What the research covers

KPV has not been tested in humans for immune support. Its effects on inflammation were seen in rodent (mouse) and lab cell studies. KPV is a peptide of three amino acids: lysine, proline and valine. It forms the tail end of the hormone alpha-MSH.

In 1989, KPV reduced ear swelling caused by a chemical in rodents (mouse). Larger doses had larger effects. In 1992, a modified KPV was tested in rodents (mouse). It cut ear inflammation caused by the immune signals IL-1 beta, IL-6 or TNF-alpha. In 2003, KPV reduced white blood cell build-up in rodents (mouse) with an inflamed belly lining.

The 2003 authors judged KPV unlikely to act through melanocortin receptors. They proposed it works by blocking IL-1 beta, an inflammation signal. In human airway cells in the lab, KPV lowered two inflammation signals, NF-kappaB and IL-8.

A PubMed search on 27 September 2026 found no clinical trial of KPV. The search was KPV[tiab] AND clinicaltrial[filter], which returned 0 records. ClinicalTrials.gov listed no KPV trials on the same date. So there are no human data on its dose, effects or safety.

Sources

1. Hiltz ME, Lipton JM Antiinflammatory activity of a COOH-terminal fragment of the neuropeptide alpha-MSH. FASEB J (1989). PMID 2550304 Rodent (mouse): graded doses of alpha-MSH(11-13), KPV, reduced picryl chloride ear swelling in a dose-related way.
2. Hiltz ME, Catania A, Lipton JM Alpha-MSH peptides inhibit acute inflammation induced in mice by rIL-1 beta, rIL-6, rTNF-alpha and endogenous pyrogen but not that caused by LTB4, PAF and rIL-8. Cytokine (1992). PMID 1325196 doi:10.1016/1043-4666(92)90073-z Rodent (mouse): a D-valine analog of KPV inhibited ear inflammation caused by IL-1 beta, IL-6 or TNF-alpha.
3. Getting SJ, Schiöth HB, Perretti M Dissection of the anti-inflammatory effect of the core and C-terminal (KPV) alpha-melanocyte-stimulating hormone peptides. J Pharmacol Exp Ther (2003). PMID 12750433 doi:10.1124/jpet.103.051623 Rodent (mouse) peritonitis and macrophage cells: KPV reduced white cell influx; likely acts on IL-1 beta, not melanocortin receptors.
4. Kannengiesser K, Maaser C, Heidemann J, et al. Melanocortin-derived tripeptide KPV has anti-inflammatory potential in murine models of inflammatory bowel disease. Inflamm Bowel Dis (2008). PMID 18092346 doi:10.1002/ibd.20334 Rodent (mouse) colitis: KPV effects partly independent of the MC1R receptor.
5. Land SC Inhibition of cellular and systemic inflammation cues in human bronchial epithelial cells by melanocortin-related peptides: mechanism of KPV action and a role for MC3R agonists. Int J Physiol Pathophysiol Pharmacol (2012). PMID 22837805 Human airway lining cells in the lab: KPV lowered NF-kappaB, IL-8 and eotaxin release.