FDA product approval
not established. No US therapeutic product approval is established by this curated source set; other countries and products may differ.
Healing · compound · checked 2026-10-09
LL-37
LL-37 is listed here as a compound. Human cathelicidin peptide involved in innate immune signaling. Status was checked 2026-10-09. This card reports cited facts. It does not tell you to use LL-37 or how much to take.
Last checked Oct 9, 2026 by PepBear. Not medical advice.
- FDA product
- not established
- Compounding
- not established
- Research
- investigational
- Sport
- unknown
What is LL-37?
Other names in the library: ll37, LL-37 (10MG), LL-37 — 5mg / Non-Lyophilized, LL-37 — 5mg / Premium. The cited evidence and any approval concern the studied or labeled preparation. Oral, nasal, cosmetic and research-market versions do not inherit product approval or proven efficacy. Listed sizes: 5 mg, 10 mg. A seller title is a listing. It does not prove the vial matches a paper.
Human cathelicidin peptide involved in innate immune signaling.
Regulatory status, dated 2026-10-09
Compounding
not established. Compounded products do not carry FDA product approval; legal eligibility is not established here.
Research
investigational. Cell and animal work; immune activity is not proof of therapeutic safety.
Sport
unknown. Not individually verified; consult the current sport rules. Absence of a listing is not permission.
What the cited papers actually measured
We mark the cited papers as D for Cell and animal work; immune activity is not proof of therapeutic safety. and No general wellness indication established.. Limited or preclinical evidence; the grade is not a safety rating. Risks on the record: FDA flags possible reproductive and tumor-related risks.
We mark the cited papers as D. That is our label for how strong those papers are. It does not say the compound works.
How long it lasts, how you store it, listed sizes
The catalog does not record a single hour value. No verified formulation-specific human estimate in this source set; no guessed value is supplied.
Half-life on file: no single hour value. No verified formulation-specific human estimate in this source set; no guessed value is supplied. Follow the label on the vial you hold. This page does not set a throw-away date after you add water.
U-100 math for listed LL-37 sizes. Each cell is micrograms per syringe mark if you add that much liquid. The table does the same math as the calculator. It does not pick an amount for you.
| Listed vial | 1 mL liquid | 2 mL liquid | 3 mL liquid |
|---|---|---|---|
| 5 mg | 50 | 25 | 16.7 |
| 10 mg | 100 | 50 | 33.3 |
Risks and mix-ups already on the record
- FDA flags possible reproductive and tumor-related risks.
- Unknown or incomplete for research formulations; this is not a clearance for use.
- Unknown or incomplete; do not infer compatibility with medications or other substances.
People using PepBear often log: Existing clinician-directed records, symptoms and dated health measurements. Record missing data; trends do not demonstrate causation.
Sources
- Primary evidence or regulator source · checked 2026-10-09
Questions people ask
Is LL-37 FDA-approved?
not established. No US therapeutic product approval is established by this curated source set; other countries and products may differ.
Does PepBear pick an amount of LL-37?
The calculator turns numbers you type into U-100 units. Trial or label amounts stay as cited facts.
Related cards
A licensed clinician must interpret the evidence for your situation. This entry provides education, not treatment instructions. Not medical advice. PepBear does not pick a dose, a cycle, or a seller.