LL-37 in Jacksonville, FL.
At Healing Advanced Solutions in Jacksonville, FL, LL-37 starts with a free consultation, and Catherine Seidle, APRN decides fit, dose, and monitoring against your history. LL-37 is a peptide the human body makes as part of its innate immune defense.
- Provider-prescribed
- COA-verified lots
- Traceable sourcing
FDA status. Peptides dispensed here are not FDA-approved drug products, and the FDA has not evaluated them for safety or effectiveness. LL-37 is prescribed only after a provider reviews your history.
What is LL-37?
LL-37 is a 37 amino acid peptide the human body makes as part of its first-line immune defense. Immune cells release it, and so do the cells lining the skin, gut, and airways when they meet a threat. Vitamin D increases the body's own production of it. Here it is prescribed after a free consultation and a review of your history.
LL-37 benefits and uses.
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Slow-healing wounds
The top use studied in people. A small randomized trial of topical LL-37 in venous leg ulcers reported faster healing at lower concentrations.
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Immune defense
In the lab, LL-37 disrupts bacterial membranes and draws immune cells toward infection.
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Skin barrier
Lab work describes how LL-37 acts in the skin's own defense and repair.
- 37amino acids, made by your own immune cells
- 34people in its first-in-human wound trial
How does LL-37 work?
LL-37 acts directly on microbes, disrupting bacterial membranes. It also signals to the immune system, drawing immune cells toward infection or injury and influencing how the skin barrier repairs. In wound healing studies, the interest has been in whether adding LL-37 to a slow-healing wound speeds the repair the body is struggling to complete.
What does the research on LL-37 show?
- Human study
In a first-in-human randomized trial of 34 people with venous leg ulcers, topical LL-37 reported faster healing at lower concentrations. Gronberg 2014
- Human study
A randomized trial studied an LL-37 cream in diabetic foot ulcers. Miranda 2023
- Human study
A human study looked at LL-37 taken by mouth. Zhao 2023
- Lab study
Lab work describes how LL-37 acts in the skin. Nakatsuji 2017
LL-37 side effects and safety.
- Human safety data are for topical or oral use over short periods; there is none for injection.
- FDA states that nonclinical findings suggest harmful effects on male reproduction and that LL-37 can promote tumor growth in some tissues.
- In its first human trial, the response did not increase with dose.
Because of FDA's safety statements, LL-37 is prescribed only after Catherine Seidle, APRN reviews your history, including any personal or family history of cancer and any plans to have children.
Starting LL-37 in Jacksonville.
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Free consultation
Ten to fifteen minutes by phone or video about what you want LL-37 for.
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Your visit
Catherine Seidle, APRN reviews your history, and labs where they are needed.
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Your take-home vial
Prescribed and dispensed with bacteriostatic water and syringes, ready to use at home.
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Follow-up
Your dose and schedule are adjusted to how you respond.
- No gray-market or research-chemical vials
- A certificate of analysis with every vial
- Prescribed by a licensed provider
Comparing your options?
Common questions.
What is LL-37?
LL-37 is a peptide your body makes as part of its first-line immune defense, released by immune cells and the cells lining the skin, gut, and airways.
What does LL-37 do?
It disrupts bacterial membranes and draws immune cells toward infection in lab studies. In people, topical LL-37 has been studied for slow-healing wounds.
Is LL-37 safe?
Human data are for topical and oral use over short periods. FDA states that nonclinical findings suggest harm to male reproduction and that it can promote tumor growth in some tissues, which is why your history is reviewed first.
Is LL-37 FDA approved?
No. It has never been approved, and its nomination for the compounding list was withdrawn.
How is LL-37 taken?
How it is given and on what schedule is set by Catherine Seidle, APRN at your visit.
How much does LL-37 cost?
A take-home vial is $240. The consultation is free, and any visit or labs your plan needs are quoted before you start.
How is LL-37 related to vitamin D?
Vitamin D increases the body's own production of LL-37, one of the links between vitamin D status and infection resistance.
This information is for general education and is not medical advice, a diagnosis, or a substitute for care from your provider.
Tell us the goal. Get a real answer.
Ten to fifteen minutes with our team. Tell us why LL-37 is on your radar, and we will help you decide whether it fits, and what the evidence actually supports.
We reply within one business day.