LL-37
Enhance innate immune defense with broad-spectrum antimicrobial activity.
For research purposes only. These products are not intended to diagnose, treat, cure, or prevent any disease. By purchasing, you confirm these products will be used for legitimate research purposes.
About LL-37
LL-37 is the only human cathelicidin antimicrobial peptide, produced naturally by immune cells, epithelial cells, and bone marrow. It provides direct broad-spectrum antimicrobial activity against bacteria, viruses, and fungi while also modulating the immune response. It plays a critical role in wound healing and immune surveillance.
Key Benefits
- Direct antimicrobial activity (bacteria, viruses, fungi)
- Modulates innate immune response
- Supports wound healing and tissue repair
- The only human cathelicidin peptide
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Category Ratings
How to Take
Common Side Effects
- Injection site pain or redness
- Mild fatigue
- Temporary immune activation symptoms
- Headache
Legal & Regulatory Status
Research use only. Not FDA-approved. LL-37 is a natural human peptide; giving it as a therapy is supported only by preclinical (animal/in-vitro) data.
Safety and regulatory details for FDA-approved compounds are drawn from the official product label via openFDA; clinical development status reflects ClinicalTrials.gov. This information is provided for research reference, is not endorsed by the FDA, and may not be complete or current.
Research & Sources
Sources are selected for reliability (peer-reviewed literature, openFDA, ClinicalTrials.gov) but this is a research summary, not medical advice, and may not be exhaustive.
Prices at quality-checked sources · as of August 2026 (3 weeks ago)
- 5mg $63.00
- $108.66
Observed on each vendor’s public listing — see how these sources are vetted. Peptide Concierge doesn’t sell peptides and isn’t affiliated with any vendor; confirm current pricing at the source.
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