KPV Peptide: What the Research Shows and Where to Buy It

KPV is a three-amino-acid fragment of the hormone alpha-MSH. It reduces inflammation in cell and mouse studies, mostly in colitis models. No human trial of KPV exists, and a 2026 study found that free KPV breaks down in simulated stomach and intestinal fluid.

Platinum Biolabs and Elite Edge Biotech sell KPV for laboratory research and publish lab reports. Both ship to US addresses only. The table below shows what the research found, and the vendor comparison follows.

Research use only. KPV is sold here as a research chemical for laboratory study. FDA has not approved it as a drug or supplement, and nothing on this page is advice for human use.

What is KPV?

KPV is the sequence lysine-proline-valine, residues 11 to 13 of alpha-MSH. In mice it kept working when the MC3 and MC4 receptors were blocked and when the MC1 receptor was nonfunctional, so it is unlikely to act through the melanocortin receptors (2, 13).

How does KPV work?

KPV enters cells through PepT1, a transporter found in the small intestine and induced in the colon during inflammatory bowel disease. In cells, nanomolar KPV blocked NF-kB and MAP kinase signaling and cut the release of inflammatory cytokines (1).

Does oral KPV work?

In mice, it can, but the form and dose matter. KPV in drinking water cut the incidence of two kinds of colitis (1). Wrapping KPV in nanoparticles and a hydrogel gave similar results at a concentration 12,000 times lower than free KPV in solution (14).

A 2026 study in Science Advances tested free KPV directly. After 2 hours in simulated gastric or intestinal fluid, free KPV was nearly completely hydrolyzed and no longer blocked inflammatory signals in macrophages. In colitis mice, free KPV at 1 mg/kg by mouth for 7 days showed no benefit. A protected prodrug called proKPV did protect the mice at 0.5 and 2.5 mg/kg, reached the colon 3.8 times more, and at 2.5 mg/kg beat the drug 5-ASA at 50 mg/kg. Each group had 6 mice (5).

We found no human study of oral KPV absorption. HHS’s new policy requires a compounder to document adequate bioavailability for any oral KPV product (6). That is the open question for capsules.

What does KPV do for gut inflammation?

Mouse and rat colitis studies from several labs report less weight loss, less tissue damage and lower inflammatory markers. Kannengiesser’s group found earlier recovery in two mouse models, and all mice with a nonfunctional MC1 receptor survived DSS colitis on KPV (2). A hyaluronic acid nanoparticle in a hydrogel worked better than a plain nanoparticle in mouse ulcerative colitis (3). In rats, a rectal hydrogel stabilized KPV, which is unstable in solution (15).

ClinicalTrials.gov lists no KPV trial (4). Nothing here shows KPV treats Crohn’s disease, ulcerative colitis or leaky gut in people.

One mouse paper links KPV to cancer. PepT1 promoted colitis-associated tumors, and KPV prevented them in normal mice but not in PepT1-knockout mice (7). That tests the transporter’s role. It does not show that KPV treats cancer.

Does KPV work on skin?

Skin data come from dishes and skin samples. KPV reduced Staphylococcus aureus colony formation and the viability of Candida albicans in vitro (9). In keratinocytes and a 3D skin model, 50 μg/mL of KPV restored viability after fine-dust damage (10). We found no study of KPV in acne, eczema or psoriasis.

Delivery is a problem. In human skin samples, KPV did not diffuse through at a detectable level. Microneedles let 4.4 μg/cm²/h through, and adding a mild electric current (iontophoresis) raised that 35-fold (8). A plain cream has no evidence of delivering KPV.

What else has KPV been tested for?

In fat cells, 100 μg/mL of KPV cut lipid staining by about 55%. In mice fed a high-fat diet, oral KPV curbed weight gain, fat tissue growth and dyslipidemia (11). KPV combined with rapamycin in self-assembled nanoparticles reduced vascular calcification in mice. The study did not test KPV alone (12). The 2026 proKPV paper also reduced inflammation in mice with acute lung injury (5).

KPV and BPC-157

No study has tested the pair. People discuss them together because KPV is studied for inflammation and BPC-157 for tissue repair, but each rests on animal data. For BPC-157, the human evidence is three uncontrolled studies covering 30 people (16). KPV is also one of four peptides in the KLOW blend.

KPV safety

No human safety study exists, and FDA says it has found no human exposure data on drug products containing KPV (17). Anything stated about side effects comes from animal work or vendor notes. Talk to a clinician before using any peptide, especially during pregnancy or with a cancer history.

Is KPV legal?

FDA has not approved KPV. Its compounding page lists KPV among bulk substances that were nominated and then withdrawn (17). In July 2026, FDA’s advisory committee voted 8 to 6, with one abstention, to recommend adding KPV to the 503A bulks list. The vote is advisory (18).

On 28 October 2026, HHS announced interim enforcement discretion for six peptides. It covers KPV acetate in topical and oral forms, made by a licensed 503A pharmacy on a patient-specific prescription. Injectable KPV is not listed. The policy is not an approval and does not add KPV to the bulks list (6).

Where to buy KPV for research

Both vendors sell a 10 mg vial for laboratory research only. Report details come from each vendor’s own PDF. Neither the vial price nor the headline purity tells you which vial is better, so the table lists what each report shows.

1. Elite Edge Biotech: lowest KPV price

Elite Edge Biotech lists KPV 10 mg at $33, the lower of the two. Its report confirms the mass of KPV but gives no amount or endotoxin result.

Elite Edge is a Sparks, Nevada supplier that ships to US addresses only. The KPV report is from MZ Biolabs in Tucson, Arizona, for batch 2026-05-28, analyzed on 5 June 2026. The measured mass is 342.23 Da, the expected mass of KPV. The headline reads 99.95% purity, but the KPV peak is 97.06% of the area. A glycine peak makes up 2.89%, and the report says glycine is not counted as an impurity.

• Shipping: flat $13, free over $200. Orders ship within 1 to 3 business days, then take 3 to 4 days in transit.
• Returns: unopened, sealed items within 30 days of delivery. You can cancel within two hours of ordering.
• Support: 24/7 chat and phone at (800) 975-6951. Affirm is available on orders over $35.

2. Platinum Biolabs: amount found in the vial

Platinum Biolabs sells KPV in one size, 10 mg at $49 list. Its report found 10.02 mg in a 10 mg vial at 99.23% purity against a specification of more than 98%.

The report is from Horizon Analytical, lot DPS-5154196, analyzed on 19 July 2026, and says it is searchable via horizonanalytical.com. One problem: the header lists the formula C17H32N6O4 and PubChem compound 9929972, which is the tripeptide H-Leu-Arg-Pro, not KPV (C16H30N4O4, 342.43 g/mol). We could not read the measured mass in the PDF text, so ask Platinum to confirm the identity result before you rely on it. Platinum also offers a separate endotoxin report, which we did not read.

Every order carries its own lot number, so ask for the report that matches your vial.

• Price: $49 list. Platinum’s site shows 25% off at the cart ($36.75) when you arrive through our link.
• Shipping: US only. Orders are dispatched the same business day, and Platinum states arrival in 1 to 2 days.
• Returns: 30 days from delivery if a vial fails its purity standard, or an order arrives damaged or goes missing (photo proof). Opened vials are not eligible.
• Support: text or call +1 (570) 734-7881, or email support@platinumbiolabs.com.

KPV capsules

SwissChems lists KPV capsules, 250 mcg × 60 (15 mg total), at $139.95 with an HPLC report posted on the page. The listing was out of stock when we checked. A vial report says nothing about a capsule, and no human study shows that oral KPV is absorbed.

How to check any KPV vendor

Run this on any vendor before you pay. It takes five minutes. Our peptide COA walkthrough goes deeper on each step.

1. Find the lab. You want an outside lab with a name you can search. “Our QC team” is a vendor grading its own homework.
2. Read the mass and formula. KPV is C16H30N4O4, about 342.2 Da by mass spectrometry. Check that the formula and PubChem ID on the report match.
3. Read the peaks. A purity headline can include peaks the lab does not count as impurities. Look at the peak list and the share held by KPV itself.
4. Match the lot. The lot number on your vial has to match a specific report. An undated report with no lot is a red flag.
5. Look for an amount found. Purity and amount are separate results, and a report with purity alone does not say how much peptide is in the vial.
6. Check independent data. Search the vendor on Finnrick, and look for unprompted user reports on Reddit’s r/Peptides.

Red flags that should end the purchase

• No report, or “lab tested” with no document to show
• Reports with no lab named, or from the vendor’s own lab
• A report whose formula or PubChem ID belongs to a different compound
• Lot numbers that do not match between the vial and the report
• A purity-only report on a listing that claims full testing
• Human dosing instructions on a research-chemical listing

Where to start

If price decides it, start with Elite Edge’s KPV at $33 and match the batch to your vial. If you want an amount found, Platinum reports one, but ask it to confirm the identity result first.

Related: best peptides for gut repair, can you take peptides orally, the best place to buy BPC-157 and the peptide vendor comparison.

KPV questions

KPV is a research chemical for laboratory use only. It is not approved by FDA as a drug or dietary supplement, is not intended to diagnose, treat, cure or prevent any disease, and is not for human or animal consumption. Laws on research chemicals vary, so check yours.

References

1. Dalmasso G, Charrier-Hisamuddin L, Nguyen HT, et al. PepT1-mediated tripeptide KPV uptake reduces intestinal inflammation. Gastroenterology. 2008;134(1):166-178. PMID 18061177.
2. 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;14(3):324-331. PMID 18092346.
3. Xiao B, Xu Z, Viennois E, et al. Orally targeted delivery of tripeptide KPV via hyaluronic acid-functionalized nanoparticles efficiently alleviates ulcerative colitis. Mol Ther. 2017;25(7):1628-1640. PMID 28143741.
4. ClinicalTrials.gov. Search results for KPV.
5. Cheng J, Wu P, Li C, et al. Inflammation-triggered self-immolative conjugates enable oral peptide delivery by overcoming gastrointestinal barriers. Sci Adv. 2026;12(3):eaea2989. PMID 41533788.
6. BakerHostetler. HHS issues enforcement discretion policy regarding 503A compounding using certain peptide bulk drug substances.
7. Viennois E, Ingersoll SA, Ayyadurai S, et al. Critical role of PepT1 in promoting colitis-associated cancer and therapeutic benefits of the anti-inflammatory PepT1-mediated tripeptide KPV in a murine model. Cell Mol Gastroenterol Hepatol. 2016;2(3):340-357. PMID 27458604.
8. Pawar K, Kolli CS, Rangari VK, Babu RJ. Transdermal iontophoretic delivery of lysine-proline-valine (KPV) peptide across microporated human skin. J Pharm Sci. 2017;106(7):1814-1820. PMID 28343991.
9. Cutuli M, Cristiani S, Lipton JM, Catania A. Antimicrobial effects of alpha-MSH peptides. J Leukoc Biol. 2000;67(2):233-239. PMID 10670585.
10. Sung J, Ju SY, Park S, et al. Lysine-proline-valine peptide mitigates fine dust-induced keratinocyte apoptosis and inflammation by regulating oxidative stress and modulating the MAPK/NF-κB pathway. Tissue Cell. 2025;95:102837. PMID 40073467.
11. An SH, Park JY, Lee SJ. KPV attenuates adipogenesis and lipid metabolism through modulation of ROS-mediated AKT/mTORC1/PPARγ signaling. Tissue Cell. 2026;104(Pt 1):103837. PMID 42585803.
12. Zhang L, Li D, Aierken Y, et al. KPV and RAPA self-assembled into carrier-free nanodrugs for vascular calcification therapy. Adv Healthc Mater. 2024;13(32):e2402320. PMID 39252648.
13. 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;306(2):631-637. PMID 12750433.
14. Laroui H, Dalmasso G, Nguyen HT, et al. Drug-loaded nanoparticles targeted to the colon with polysaccharide hydrogel reduce colitis in a mouse model. Gastroenterology. 2010;138(3):843-853. PMID 19909746.
15. Sun J, Xue P, Liu J, et al. Self-cross-linked hydrogel of cysteamine-grafted γ-polyglutamic acid stabilized tripeptide KPV for alleviating TNBS-induced ulcerative colitis in rats. ACS Biomater Sci Eng. 2021;7(10):4859-4869. PMID 34547895.
16. Poolton JT, Minett J, Kazmi A. Human evidence for BPC-157 in orthopaedic and regenerative medicine: a systematic review of efficacy and safety. Acta Orthop Belg. 2026;92(3). PMID 42885452.
17. FDA. Certain bulk drug substances for use in compounding that may present significant safety risks.
18. Healio. FDA committee recommends looser restrictions for several peptides.