LL-37 is a immune & healing peptide. Typical research dosing is protocol-dependent, and the body of supporting research is preclinical + early clinical.
LL-37 is the only cathelicidin antimicrobial peptide found in humans. It is a 37-amino-acid peptide that your body naturally produces as part of the innate immune system, primarily in white blood cells, epithelial cells, and mucosal surfaces. It is one of the body's first-line defenses against bacterial, viral, and fungal infections. Browse the full peptide library for related compounds.
The reason LL-37 matters in the peptide world: supplemental LL-37 is being studied for its ability to enhance immune response, accelerate wound healing, disrupt bacterial biofilms (which are notoriously difficult to treat with antibiotics), and modulate inflammation. It is particularly interesting for chronic infections and conditions where biofilm formation is a factor (chronic sinusitis, Lyme disease, urinary tract infections, chronic wounds).
LL-37 complements healing peptides like BPC-157 and TB-500. For gut-specific immune support, KPV targets intestinal inflammation through a different mechanism. LL-37 works broadly across all tissues where the innate immune system operates. LL-37 works on innate immune defense, while thymosin alpha-1 supports adaptive immunity through T-cell modulation. Some protocols combine both.
In Philippines, LL-37 is available research-grade from regional suppliers. Not available at Filipino pharmacies or hospitals. The tropical climate and exposure risks in the Philippines make immune-support peptides particularly relevant for expats and frequent travelers in the region. For what to ask a seller, see the supply index. Verify purity via the COA guide. For legal context, see the peptide legality guide.
Direct Antimicrobial Activity: LL-37 physically disrupts bacterial cell membranes through electrostatic interaction, killing bacteria directly. This mechanism makes it difficult for bacteria to develop resistance.
Biofilm Disruption: Penetrates and disrupts bacterial biofilms, the protective matrix that makes chronic infections resistant to antibiotics. This is LL-37's most clinically significant property.
Immune Modulation: Recruits immune cells to infection sites, modulates inflammatory cytokines, and bridges innate and adaptive immune responses.
Wound Healing: Promotes angiogenesis (new blood vessel formation) and re-epithelialization at wound sites, accelerating tissue repair.
| Phase | Dose | Frequency | Duration |
|---|---|---|---|
| Immune support | 50-100mcg | Subcutaneous daily | 2-4 weeks |
| Targeted infection | 100-200mcg | Subcutaneous daily | 4-6 weeks |
| Wound healing | Topical application | Direct to wound 1-2x daily | Until healed |
Always start at the lowest effective dose and titrate up gradually.
Turning a dose in milligrams into units on a syringe is arithmetic, not judgement. The reconstitution calculator does it for any vial size, and the rest of the calculator set covers cost per milligram and route comparison.
Vials at Primara Labs, our partner and supplier, ship from stock already inside the Philippines, so an order has no customs leg. Their catalogue is the shortest route to what is listed locally and at what price, and anything outside it goes through the same WhatsApp thread. View the Primara Labs catalogue
Subtle. Most users do not feel dramatic effects from LL-37. It is not a stimulant or mood-altering compound. Effects are primarily at the immune system level.
Improved wound healing if using for that purpose. Potential reduction in chronic infection symptoms if biofilm disruption is occurring.
Full immune modulation effects. Users with chronic infections often report the most noticeable improvements in this window.
Our partner and supplier
Primara Labs, our partner and supplier, ships from inventory already inside the Philippines, so there is no customs leg: vials are batch-numbered, Metro Manila orders dispatch same day, the rest of the country lands in one to three business days, and every order gets 10% off. The current list sits on one page, and anything you cannot see on it goes through the same WhatsApp thread.
View the Primara Labs catalogueThe supply index covers what to ask a seller before paying, and why quoted prices vary so widely.
Risk · Disclosure · Editorial Status
This page is editorial information for adults researching peptide therapy. It is not medical advice, not a prescription, and not an endorsement of any specific product, supplier, or protocol. Side effects can be serious and individual response varies. Talk to a licensed physician (ideally one with peptide-specific clinical experience) before starting any compound, adjusting a dose, or discontinuing therapy.
In the Philippines, GLP-1 medications are prescription-only under FDA Philippines regulation. Research-grade peptides occupy a regulatory gray area: import for personal research use is generally tolerated, but the Bureau of Customs reserves the right to inspect and detain shipments. Do not import for resale.
Editorial Status
Independent · Non-clinical
Affiliation
Not a clinic · Not a pharmacy
Last Updated
August 27, 2026
