Illustration — photo to followLot AV-LL3-2609-A
LL-37
Peptide pen · 10 mg / 3 mL
VAT included · 1 pen · 10 mg / 3 mL
Sold for research use only. Not a medicine and not authorised for human consumption. Purchasers must be 18+ and confirm intended use at checkout.
- Ships chilled · same-day dispatch before 2 pm
- Free UK shipping over £300
About
What this is
LL-37 is included in the guide under immune & gut. The reference focuses on antimicrobial, innate-immune and wound-response research and distinguishes biological rationale from demonstrated outcomes. Supplied by the manufacturer as a pre-filled 10 mg / 3 mL dose-dial pen for research use — no reconstitution, no vials, no drawing up. Our evidence record is linked below and graded on the same scale as every compound on this site.
- 01Pre-filled pen — no reconstitution
- 02Identity confirmed by LC-MS per lot
- 03Purity ≥ 99% by HPLC
- 04Certificate published against the lot number
Specification
What's in the pen
Device
How the pen works
- 01
Attach a pen needle
Take the cap off, wipe the septum with an alcohol swab and screw a compatible pen needle on until it seats. Use a fresh needle every time and never share a pen.
- 02
Prime
Dial a small test amount, hold the pen needle-up and press the button until a drop appears at the tip. This clears air from the needle and confirms the pen delivers.
- 03
Dial
Turn the dial to the volume you intend to deliver; the window shows the setting in the pen's increments. The dial sets a volume of solution — nothing more.
- 04
Inject
Insert as the pen-needle instructions describe, press the button fully and hold for ten seconds before withdrawing. Remove and bin the needle in a sharps container, recap and refrigerate.
Dosing is not provided; see the research information in the evidence record. These steps describe how the device operates, not how or whether to use its contents.
Certificate of analysis
Lot AV-LL3-2609-A
Independent test of a sample from lot AV-LL3-2609-A of LL-37. Testing confirms what is in the pen and how pure it is; it does not speak to safety or effect in people. How we test
Evidence record · reviewed 1 Sept 2026
What the research says about LL-37
Human antimicrobial peptide: topical wound trials only, injected use untested.
- Overall evidence
- Preliminary
- Human evidence
- Early-stage human studies
- Regulatory · jurisdictions on record
- Not authorised
- Not authorised · United Kingdom, United States, European Union, Australia and Canada
- Other jurisdictions · No marketing authorisation known in any country.
- United Kingdom · Not authorised as a medicine; sold only as an unregulated 'research chemical'. · reviewed 1 Sept 2026
- Anti-doping · WADA
- Not on the Prohibited List
Fit
Who this is for
Antimicrobial and wound-response research interests — topical wound data only, no systemic trials.
- Wound-response research
- Innate-immune signalling interests
- Understanding an antimicrobial peptide
Check your fit
The Peptide Checkup maps your goal and history against the evidence for this pen and tells you if it is a poor fit — even after you have bought it.
Check your fit · 7 minutesAlso in the range · by shared goal, then bestsellers
