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A pharmacist will follow up within two business days. We'll cover state availability, supported formulations, and what integration looks like for your clinic.
Peptides · Tissue repair (under FDA review)
LL-37
Antimicrobial host defense peptide.
What it does
What LL-37 is and why doctors prescribe it.
LL-37 is the only human cathelicidin antimicrobial peptide. Research focuses on antimicrobial activity, wound healing, and immunomodulation. Under FDA review for potential 503A access.
How it works
Mechanism in plain English.
LL-37 is a 37-amino-acid amphipathic peptide produced by neutrophils, epithelial cells, and other tissues as part of innate immunity. It directly disrupts bacterial membranes, modulates the immune response, recruits inflammatory cells, and supports epithelial repair. Vitamin D upregulates endogenous LL-37 production.
How long it's been studied
Research history.
LL-37 has been studied since the 1990s as part of cathelicidin antimicrobial peptide research. Preclinical and translational work continues. Cannot currently be compounded under 503A.
Dosing
Clinical context for the prescribing doctor.
Pending regulatory clarity. RonanRx cannot compound LL-37 until it receives 503A-permissible status.
This page is informational, not a dispensing aid. LL-37 is dispensed only on a patient-specific prescription written by a licensed doctor for an identified patient. Compounded drugs are not FDA-approved and should not be evaluated using branded-drug trial data. Availability varies by state and prescribed medication.
How to access LL-37 through RonanRx
Three paths.
LL-37 is currently in Category 2 and not available for 503A compounding. RonanRx is tracking the FDA review and will notify partner clinics when the decision allows compounding access.
Patient with a doctor
Sign up to receive your prescription.
If your doctor has already prescribed LL-37, sign up so we can prepare and ship your medication. The signup wizard collects intake and connects you to the prescribing workflow.
Patient without a doctor
Get referred by a partner clinic.
RonanRx prescribes through partner clinics — we don't initiate prescriptions on this site. Read how the referral process works and how to find a partner clinic in your state.
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