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Where to Buy LL-37: Vendor Comparison, Benefits & Side Effects

An antimicrobial peptide studied for immune and wound defense.

Published December 17, 2025152 vendors listed1 cited source
Compare 152 vendorsCompare prices — from $0.880/mgDosing calculator

Cheapest LL-37 prices per mg

The 5 lowest verified retail prices of 142 we track, ranked by cost per milligram.

Compare all 142 vendors →
LL-37 cost per milligram, cheapest retail vendors first
#VendorPrice / mgVisit vendor
1Bio Bulk Peptides$0.880Visit
2Steady Meds$1.50Visit
3Topstide$1.89Visit
4Biohacker Direct$2.46Visit
5Chimera Peptides$2.50Visit

Prices checked — the newest verification among the vendors shown. What “checked” means. Cost per milligram, normalised for comparison; confirm on the vendor’s own site before ordering. Sold for laboratory research use only.

What is LL-37?

LL-37 is a naturally occurring human cathelicidin peptide researched for its antimicrobial, immunomodulatory, and wound-healing properties.

Where to Buy LL-37 Online

152 vendors in our directory currently list LL-37 — 142 online stores and 10 wholesale suppliers. Stores sell by the vial with a price you can check; wholesale suppliers quote per gram on enquiry. Featured vendors paid for their placement; ratings and trust signals are never for sale.

The top 15 online stores are compared below, ordered by our directory ranking.

Compare all LL-37 prices per mg →

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Mechanism of Action

It disrupts microbial membranes and modulates immune signaling, promoting pathogen clearance and tissue repair.

Clinical Research

Cited studies

  1. 1LL-37: the multifaceted peptide in innate immunity and beyond

Researched Benefits

Research on LL-37 has focused on the following areas:

  • Endogenous cathelicidin peptide with broad-spectrum antibacterial, antiviral, and antifungal activity
  • Modulates innate immune responses and helps resolve chronic inflammation
  • Investigated for supporting wound healing, biofilm disruption, and mucosal defense

Side Effects & Safety

Adverse reactions and limitations documented for LL-37 include:

  • Local irritation
  • Inflammatory response at high doses

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