Compound library / Healing & recovery / Immune / Antimicrobial

LL-37

Human cathelicidin antimicrobial peptide explored for antimicrobial and wound-healing properties.

CategoryImmune / Antimicrobial
Regulatory standingNo approved product cited
Typical routeSubcutaneous
Half-lifeShort, minutes
Common dose rangeResearch-stage, not well standardized
Typical cycle lengthNot well established

BioHack Track models LL-37 at a half-life of 0.5 hours, so every dose you log is decayed against that curve and the app shows estimated active levels — not just what you typed.

No approved product cited

No FDA-approved product for this compound is cited on this page, and no approved human dose is quoted. Treat the range below as research and community practice rather than a prescribed dose.

Reconstitution

Reconstitute with bacteriostatic water.

Storage

Refrigerate after reconstitution.

Cautions

Mostly preclinical research; can cause local irritation at injection site.

Track LL-37 in BioHack Track. Half-life, dose range and route come pre-filled from this library — log a dose and the app counts your vial down, models what is in your system, and puts it on the same chart as your labs and body composition.

Others in Immune / Antimicrobial

What the evidence says

Evidence Check asks 10 questions about every compound. For LL-37 it can answer 3 of them, from the papers we hold — graded by how strong the study design is, not by whether the findings are flattering. These are the same verdicts the app gives.

Insufficient EvidenceInflammation

Only reviews or early work — not enough to say either way.

  • [Cathelicidin LL-37. A central factor in the pathogenesis of inflammatory dermatoses?]Review · Hautarzt · 2008 · PMID 18209993
Insufficient EvidenceSkin & collagen

Only reviews or early work — not enough to say either way.

  • [Cathelicidin LL-37. A central factor in the pathogenesis of inflammatory dermatoses?]Review · Hautarzt · 2008 · PMID 18209993
Insufficient EvidenceWound healing

Only reviews or early work — not enough to say either way.

  • LL-37 antimicrobial peptide: Molecular characterisation and its role in oral health and disease-A narrative reviewReview · Arch Oral Biol · 2026 · PMID 41544412
  • Significance and Diagnostic Role of Antimicrobial Cathelicidins (LL-37) Peptides in Oral HealthReview · Biomolecules · 2017 · PMID 29206168

Look up the research

These open a search of each database for LL-37 — they are not citations, and nothing here is evidence for any particular dose. The same links are in the app.

Work it out

Selected published studies

9 papers naming LL-37 in the title, drawn from PubMed and limited to reviews, meta-analyses and trials. Each was checked against PubMed’s own record for its title, journal and year. This is a starting point, not an evidence review — nothing here is offered as support for the dose range above, and the list is not exhaustive. See the editorial policy.

Where these figures come from

The half-life, route and dose range on this page are compiled from published pharmacokinetic literature, manufacturer and product monographs where one exists, and the ranges commonly reported in clinical and research use. They are kept as a range rather than a single figure because that is what the sources actually support — a half-life varies with route, formulation and the person.

These are not citations, and this page is not a review of the evidence. Where a number matters to you, follow the database links above and read the source. We say so plainly rather than dressing a compiled reference up as one.

Nothing on this page has been reviewed by a named clinician. It is a reference for people already tracking a protocol, not a recommendation to start one.

Published by Creative Images LLC · Last updated · Corrections: support