Immune Peptides

Our immune peptides are the compounds labs use in immune signaling and infection research: Thymosin Alpha 1, LL-37, KPV, VIP and ARA-290, each as a 10mg vial.

Looking for something else? See our healing and recovery peptides and anti-aging peptides, or browse all research peptides.

What are immune peptides?

Thymosin Alpha 1 is a 28-amino-acid peptide from the thymus, approved in many countries as Zadaxin for hepatitis B and as an immune adjuvant. LL-37 is the only cathelicidin antimicrobial peptide humans make, and it can break open bacterial membranes.

KPV is the last three amino acids of alpha-MSH and is studied for gut inflammation. VIP, vasoactive intestinal peptide, is a 28-amino-acid neuropeptide that also damps immune responses. ARA-290 is an 11-amino-acid peptide built on part of erythropoietin, designed to keep its tissue-protective effect without raising red blood cells.

For the published research behind this range, start with this PubMed search.

Immune Peptides in our range

  • ARA-290: 10mg, $48.00
  • KPV: 10mg, $44.00
  • LL-37: 10mg, $78.00
  • Thymosin Alpha 1: 10mg, $58.00
  • VIP: 10mg, $58.00

How to choose immune peptides

For T-cell and vaccine-response work, Thymosin Alpha 1 has the most clinical history. For antimicrobial models, LL-37 is the standard. For inflammation, KPV and ARA-290 are the usual picks, and VIP covers the nerve and immune crossover.

Every one of these is a single 10mg vial with 5 and 10 pack options.

Immune peptides: formats and prices

There are 5 products in this range: five single-compound vials. Single prices run from $44.00 to $78.00. All of them also come in a 5 pack (save 5%) and a 10 pack (save 10%), which you choose from the dropdown on the product page. Every product page lists the amount, the format and the SKU, so you can compare like for like before you order.

Lab testing for our immune peptides

Most of our product pages carry an independent Janoshik Analytical test report right in the photos. Each report shows the compound the lab found, the measured amount and the HPLC purity, and it has a key you can enter at janoshik.com/verify to see the original. Where a report was run on a different size of the same compound, the product page says so.

Store sealed vials in the fridge, or the freezer for long-term storage, and reconstitute with our research diluent. Every vial page lists the concentration you’ll get for each volume.

Immune peptides FAQ

Are your immune peptides in stock?

Yes. Everything listed here is in stock now.

Are immune peptides for human use?

No. Everything we sell is for laboratory research only and isn’t approved for human or veterinary use.

How do I pick a size?

Bigger vials cost less per milligram, and smaller ones make sense for short projects, since less sits open in the fridge. Each product page compares the sizes.

Can I buy in bulk?

Yes. Most products have a 5 pack that saves 5% and a 10 pack that saves 10%. Choose the quantity from the dropdown on the product page.

Do I need anything else?

Vials need a sterile diluent such as our research diluent. Tablets and the ready-made liquids don’t.

Buy immune peptides online

Pick a product above, choose a single or a multi-pack and check out in a couple of minutes. Everything on this page is in stock. Add a research diluent vial to the same order and you’ll have everything you need to start.

For laboratory research use only. Not for human or veterinary use.

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