Peptide Referee

LL-37: research, legal status and who sells it

This page is information, not medical advice. LL-37 is not approved as a medicine in the markets below unless stated. We don't publish dosing or usage instructions.

Also known as
Cathelicidin LL-37, Cathelicidin antimicrobial peptide
Category
Human antimicrobial peptide (cathelicidin)
Evidence level
Early human trials
Price range
$2.50/mg to $21.25/mg, median $8.50/mg across 39 vendors (compare)
Our lab tests
None yet (how testing will work)
WhereStatus
United StatesNot FDA-approved; the compounding nomination for cathelicidin LL-37 was withdrawn after FDA flagged safety risks, and FDA plans to consult its advisory committee on it before the end of February 2027 [1][2][3].
United KingdomNo UK-licensed medicine containing LL-37 appears in the MHRA products database [4].
European UnionNo medicine containing LL-37 is authorized in the EU, according to EMA's central and Article 57 product data [5][6].
CanadaNo product containing LL-37 appears in Health Canada's Drug Product Database [7].
AustraliaLL-37 is not named in Australia's Poisons Standard (October 2026) [8].
Sport (WADA)Not named on the 2026 Prohibited List; its section S0 bans any pharmacological substance with no current approval for human therapeutic use [9].
 Summaries of official sources, checked —. Rules change; follow the source links. Not legal advice.

We haven't published a full overview of LL-37 yet. The legal status table and live prices on this page are current.

LL-37 prices: cheapest listings

The five lowest $/mg listings out of 55. See all LL-37 prices

Vendor Transparency Product Size Price $/mg vs median Stock Vendor's page
Chimera Peptides 27/100 LL37 5 mg × 20 $250 $2.50/mg −71% In stock View
Chimera Peptides 27/100 LL37 5 mg × 10 $142 $2.84/mg −67% In stock View
Nexaph 45/100* LL-37 10mg (10 vials/kit) 10 mg × 10 $378 $3.78/mg −56% In stock View
Bulk Peptide Supply 57/100* LL-37 5 mg 5 mg $20 $4.00/mg −53% In stock View
Bulk Peptide Wholesale 45/100* LL-37 5 mg (10 vials) 5 mg × 10 $200 $4.00/mg −53% In stock View

Prices come from each vendor's public product feed and were last fetched Oct 15, 2026. They exclude shipping and discounts. $/mg uses the labeled amount, not measured content. A transparency score marked * is based on fewer than six checks; checks we couldn't complete score 0. How we compare prices.

Sources

  1. Drugs@FDA: FDA-Approved Drugs (database searched by active ingredient). U.S. Food and Drug Administration. Accessed Oct 14, 2026
  2. Certain Bulk Drug Substances for Use in Compounding that May Present Significant Safety Risks (content current as of 22 April 2026). U.S. Food and Drug Administration. Accessed Oct 14, 2026
  3. Meeting of the Pharmacy Compounding Advisory Committee (to be held before the end of February 2027). U.S. Food and Drug Administration. Accessed Oct 14, 2026
  4. MHRA Products: licensed-medicine search for "cathelicidin". Medicines and Healthcare products Regulatory Agency (UK). Accessed Oct 14, 2026
  5. EMA medicines data: centrally authorised human medicines (export of 14 October 2026). European Medicines Agency. Accessed Oct 14, 2026
  6. EMA Article 57 product data: medicines authorised in the EU/EEA (data as of 9 October 2026). European Medicines Agency. Accessed Oct 14, 2026
  7. Drug Product Database online query (searched by active ingredient). Health Canada. Accessed Oct 14, 2026
  8. Therapeutic Goods (Poisons Standard—October 2026) Instrument 2026 (F2026L01327, registered 30 September 2026). Federal Register of Legislation, Australian Government. Accessed Oct 14, 2026
  9. World Anti-Doping Code International Standard: Prohibited List 2026 (in force 1 January 2026). World Anti-Doping Agency. Accessed Oct 14, 2026