What Is LL-37?
LL-37 is a cathelicidin antimicrobial peptide involved in immune defense, wound healing, and inflammation regulation. It is naturally produced by epithelial cells and immune cells, where it acts as a broad spectrum protective signal against bacteria, viruses, and fungi.
Mechanisms of Action
Antimicrobial activity: Helps disrupt pathogen membranes, reducing the ability of microbes to persist and spread.
Immune modulation: Tunes immune cell activity to support innate immunity while helping limit excess inflammatory signaling.
Wound healing support: Promotes tissue repair signals, including collagen related processes and improved skin recovery.
Benefits
Infection defense: Supports immune function and resilience against infections, especially when immune defenses are compromised.
Skin health and wound healing: Commonly discussed for wound care, burn recovery, and chronic skin issues such as eczema and psoriasis.
Chronic inflammation support: May help regulate immune responses in inflammatory and autoimmune contexts by improving immune balance.
Dosing
Topical use: Often applied at 1% to 10% concentrations, commonly in skin repair, wound healing, and burn recovery contexts.
Injection or oral use: Appears in some clinical style protocols for immune support and systemic infection contexts. Anecdotal dosing discussions often reference 50 to 125 mcg daily, with protocols varying by goal and tolerance.
Safety Profile
LL-37 is generally well tolerated, particularly when used topically. Potential issues include:
Mild skin irritation or localized allergic type reactions
Immune overstimulation risk in people with autoimmune disorders, so conservative use and careful monitoring are commonly emphasized
Disclaimer: This is for educational purposes only and is not medical advice. Compounds referenced are for research or educational discussion and not for human consumption.
