Last updated: March 2026
A tripeptide so small it survives digestion. Derived from alpha-MSH, KPV packs potent anti-inflammatory and antimicrobial activity into just three amino acids — with demonstrated oral bioavailability. Here's the research.
KPV (Lys-Pro-Val) is the C-terminal tripeptide fragment of alpha-melanocyte-stimulating hormone (α-MSH), positions 11-13. Despite being just three amino acids, it retains the full anti-inflammatory signaling of its 13-amino-acid parent hormone — without the melanogenic (skin-darkening) side effects. Its tiny size is the key to its unique oral bioavailability.
KPV's primary mechanism: it enters cells and directly inhibits NF-κB — the master transcription factor that drives inflammatory gene expression. By blocking NF-κB nuclear translocation, KPV suppresses production of TNF-α, IL-6, IL-1β, and other pro-inflammatory cytokines at the source. This is the same pathway targeted by many pharmaceutical anti-inflammatories, but through a different entry point. (Kannengiesser et al., J Biol Chem 2011)
Beyond anti-inflammatory effects, KPV demonstrates direct antimicrobial properties against Staphylococcus aureus and Candida albicans. The peptide disrupts microbial membranes and modulates innate immune responses. This dual anti-inflammatory + antimicrobial profile makes it particularly interesting for conditions involving both infection and inflammation, such as infected wounds and gut dysbiosis.
In IBD animal models, KPV reduces colonic inflammation, preserves epithelial barrier integrity, and promotes mucosal healing. The peptide crosses the intestinal barrier intact — thanks to its tiny size (just 3 residues) — allowing oral administration to deliver local gut effects. This is extremely rare for peptides, which are usually degraded by gastric enzymes. (Dalmasso et al., J Clin Invest 2008)
α-MSH activates melanocortin receptors (MC1R-MC5R), causing skin darkening and other hormonal effects. KPV retains the anti-inflammatory signaling but does NOT activate MC1R-dependent melanogenesis. This means anti-inflammatory benefits without the tanning, hormonal modulation, or other melanocortin side effects of full-length alpha-MSH or analogs like melanotan.
Data from published preclinical studies on KPV's anti-inflammatory, antimicrobial, and gut-healing effects.
Research context: KPV research is primarily preclinical — cell culture and animal models. Human clinical trials are extremely limited. The mechanistic data is strong, but translational evidence in humans is still emerging. Most studies come from university-affiliated immunology and gastroenterology labs.
Community-reported dosing based on preclinical research and anecdotal use. These are not medical prescriptions.
Why KPV is special: Most peptides are destroyed by stomach acid and digestive enzymes. KPV's size (just 3 amino acids — smaller than most dipeptides from protein digestion) allows it to be absorbed intact via the PepT1 transporter. This makes oral dosing genuinely viable, not just theoretical. Research Peptide — Not FDA Approved
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This page is for educational and informational purposes only. It is not medical advice. KPV is not FDA approved for any indication. It is classified as a research peptide. All data presented is from preclinical studies (cell culture and animal models) — no controlled human clinical trials have been published. Always consult a qualified healthcare provider before starting any new peptide or supplement protocol. MeetPeptide does not sell KPV or endorse its use outside of legitimate research contexts.