LL-37 price comparison
Human cathelicidin antimicrobial peptide. Prices from 35 vendors, all normalized to price per mg so a 5 mg and a 20 mg vial can be compared fairly.
What the research says about LL-37
Evidence map →Several randomized controlled trials in humans, often summarized by meta-analyses.
- 4,704
- Papers
- 63
- RCTs
- 20
- Reg. trials
Most research concerns cathelicidin LL-37 as part of the immune system, not supplementation.
- Human clinical studies: 144
- Animal / lab only: 824
- Other (reviews, untagged): 3736
- Meta-analyses / systematic reviews: 16
- Meta-analysisAssociations between vitamin D status and biomarkers linked with inflammation in patients with asthma: a systematic review and meta-analysis of interventional and observational studies — Respiratory research, 2024
- Randomized trialEvaluation of LL-37 in healing of hard-to-heal venous leg ulcers: A multicentric prospective randomized placebo-controlled clinical trial — Wound repair and regeneration : official publication of the Wound Healing Society [and] the European Tissue Repair Society, 2021
- Randomized trialThe therapeutic efficacy of Bifidobacterium animalis subsp. lactis BB-12(®) in infant colic: A randomised, double blind, placebo-controlled trial — Alimentary pharmacology & therapeutics, 2020
- Randomized trialA randomized controlled trial on the effect of vitamin D3 on inflammation and cathelicidin gene expression in ulcerative colitis patients — Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association, 2016
- Randomized trialIncreased serum levels of LL37, HMGB1 and S100A9 during exacerbation in COPD patients — The European respiratory journal, 2015
- Randomized trialAntibody fusions reduce onset of experimental Cryptosporidium parvum infection in calves — Veterinary parasitology, 2012
- Vitamin D in Active Tuberculosis (TB) Study — withdrawn · na
- The Role of Anti-inflammatory Cytokines and Antimicrobial Peptide LL-37 Biomarkers in the Treatment of Periodontal Disease. — completed
- Evaluation of 25(OH)D3 and LL-37 Levels in Periimplant Sulcus Fluid — not yet recruiting
- Efficacy of LL-37 Cream on Bacteria Colonization, Inflammation Response and Healing Rate of Diabetic Foot Ulcers — unknown · phase2
- Salivary TAS, TOS, LL-37 and Dental Status in Passive Smoking Children — completed
The grade reflects how much and what kind of research exists — not whether LL-37 works or is safe. It is computed from PubMed study-type tags and ClinicalTrials.gov registrations as of Oct 22, 2026. Research use only; not medical advice.
Research & Pharmacokinetic Specs
Biological research peptide targeting specialized cell surface receptors or cellular signaling pathways.
Specific receptor target identified in experimental models.
- •Experimental research compound — for in-vitro laboratory research only
- •Not evaluated or approved by the FDA for human clinical use
Cheapest LL-37 by vial size
The lowest price at each size, across all vendors. Tap a size for the full ranking.
Where every vendor sits
Each dot is a vendor’s cheapest in-stock LL-37 vial, in $ per mg. The spread between the leftmost dot and the median is what shopping around is worth.
Compare every LL-37 offer
| Product | Size | Link to vendor | |||
|---|---|---|---|---|---|
| Modern Research Peptides United States LL-37 5mg (6.55 mg) COA CLAIMED | LL-37 5mg (6.55 mg) | 5 mg vial | $37.99 | $7.60 | View ↗ |
| Protide Health United States LL-37 5mg COA CLAIMED | LL-37 5mg | 5 mg vial | $75.00 | $15.00 | View ↗ |
| Accelerate Labs United States LL-37 10MG COA CLAIMEDTESTED 65% · 20 | LL-37 10MG | 10 mg vial | $32.99 | $3.30best | View ↗ |
| Glacier Aminos United States LL-37 5MG COA CLAIMED | LL-37 5MG | 5 mg vial | $24.49 | $4.90 | View ↗ |
| Oasis Labs United States LL-37 10mg COA CLAIMED | LL-37 10mg | 10 mg vial | $65.00 | $6.50 | View ↗ |
| Eros Peptides United States LL-37 10MG COA CLAIMEDTESTED 77% · 3 | LL-37 10MG | 10 mg vial | $70.00 | $7.00 | View ↗ |
| Bio Pepz United States LL-37 5MG TESTED 81% · 4 | LL-37 5MG | 5 mg vial | $35.20 | $7.04 | View ↗ |
| Lab Rat Peptide United States LL-37 5MG TESTED 76% · 2 | LL-37 5MG | 5 mg vial | $35.99 | $7.20 | View ↗ |
| EZ Peptides United States LL-37 10MG COA CLAIMED | LL-37 10MG | 10 mg vial | $78.00 | $7.80 | View ↗ |
| Ascension Peptides United States LL-37 (10MG) COA CLAIMED | LL-37 (10MG) | 10 mg vial | $78.00 | $7.80 | View ↗ |
| Purus Peptides United States LL-37 5mg COA CLAIMED | LL-37 5mg | 5 mg vial | $39.00 | $7.80 | View ↗ |
| Ameano Peptides United States LL-37 10mg COA CLAIMEDTESTED 66% · 12 | LL-37 10mg | 10 mg vial | $80.00 | $8.00 | View ↗ |
| Paramount Peptides United States LL-37 (10mg) COA CLAIMEDTESTED 65% · 65 | LL-37 (10mg) | 10 mg vial | $85.00 | $8.50 | View ↗ |
| YourFitnessPeptides United States LL37 (5mg) COA CLAIMED | LL37 (5mg) | 5 mg vial | $45.95 | $9.19 | View ↗ |
| Modern Aminos United States LL-37 5MG COA CLAIMEDTESTED 79% · 6 | LL-37 5MG | 5 mg vial | $47.00 | $9.40 | View ↗ |
| Peptide Hub United States LL-37 — 10mg COA CLAIMED | LL-37 — 10mg | 10 mg vial | $99.00 | $9.90 | View ↗ |
| Peptide Crafters United States LL-37 (CAP-18) (5mg) COA CLAIMEDTESTED 61% · 60 | LL-37 (CAP-18) (5mg) | 5 mg vial | $50.00 | $10.00 | View ↗ |
| BioPlex Peptides United Kingdom LL-37 5mg</br>(Cathelicidin) COA CLAIMED | LL-37 5mg</br>(Cathelicidin) | 5 mg vial | $52.00 | $10.40 | View ↗ |
| Zenith Biopeptides United States LL-37 5MG COA CLAIMED | LL-37 5MG | 5 mg vial | $60.00 | $12.00 | View ↗ |
| Polaris Peptides United States LL-37 10mg NO COA FOUNDTESTED 64% · 107 | LL-37 10mg | 10 mg vial | $125.00 | $12.50 | View ↗ |
| Tide Labs United Kingdom LL-37 (Cathelicidin) 5mg COA CLAIMED | LL-37 (Cathelicidin) 5mg | 5 mg vial | $62.90 | $12.58 | View ↗ |
| Verified Peptides United States LL-37 Peptide (5MG) COA CLAIMEDTESTED 65% · 39 | LL-37 Peptide (5MG) | 5 mg vial | $65.00 | $13.00 | View ↗ |
| Peptide Hub United States LL-37 — 5mg COA CLAIMED | LL-37 — 5mg | 5 mg vial | $70.00 | $14.00 | View ↗ |
| Paramount Peptides United States LL-37 (5mg) COA CLAIMEDTESTED 65% · 65 | LL-37 (5mg) | 5 mg vial | $75.00 | $15.00 | View ↗ |
| Atomik Labz United States LL-37 -5mg NO COA FOUNDTESTED 69% · 44 | LL-37 -5mg | 5 mg vial | $77.00 | $15.40 | View ↗ |
| PSPeptides United States LL-37 (1 Vial) — 5MG COA CLAIMED | LL-37 (1 Vial) — 5MG | 5 mg vial | $79.99 | $16.00 | View ↗ |
| Amino USA United States LL-37 5mg COA CLAIMEDTESTED 32% · 3 | LL-37 5mg | 5 mg vial | $80.00 | $16.00 | View ↗ |
| Biotech Peptides United States LL-37 (5mg) COA CLAIMED | LL-37 (5mg) | 5 mg vial | $86.00 | $17.20 | View ↗ |
| Core Peptides United States LL-37 – 5MG COA CLAIMED | LL-37 – 5MG | 5 mg vial | $89.00 | $17.80 | View ↗ |
| Certified Peptides United States LL-37 5MG COA CLAIMEDTESTED 60% · 13 | LL-37 5MG | 5 mg vial | $89.00 | $17.80 | View ↗ |
| Umbrella Labs United States LL-37 PEPTIDE 2MG/5MG VIAL — 5 Milligrams COA CLAIMED | LL-37 PEPTIDE 2MG/5MG VIAL — 5 Milligrams | 5 mg vial | $90.00 | $18.00 | View ↗ |
| BioLongevity Labs United States LL-37 (5mg) COA CLAIMEDTESTED 71% · 34 | LL-37 (5mg) | 5 mg vial | $94.97 | $18.99 | View ↗ |
| Warrior Makers United States LL-37 5mg COA CLAIMED | LL-37 5mg | 5 mg vial | $95.00 | $19.00 | View ↗ |
| Licensed Peptides United States LL-37 5mg — 5mg 1 COA CLAIMED | LL-37 5mg — 5mg 1 | 5 mg vial | $99.99 | $20.00 | View ↗ |
| Paramount Peptides United States LL-37 Complex (5mg) COA CLAIMEDTESTED 65% · 65 | LL-37 Complex (5mg) | 5 mg vial | $106.25 | $21.25 | View ↗ |
| Behemoth Labz United States LL-37 (CAP-18) — 5mg COA CLAIMED | LL-37 (CAP-18) — 5mg | 5 mg vial | $108.66 | $21.73 | View ↗ |
| Umbrella Labs United States LL-37 PEPTIDE 2MG/5MG VIAL — 2 Milligrams COA CLAIMED | LL-37 PEPTIDE 2MG/5MG VIAL — 2 Milligrams | 2 mg vial | $45.00 | $22.50 | View ↗ |
| Based Research United States LL37 (5mg) COA CLAIMED | LL37 (5mg) | 5 mg vial | $120.00 | $24.00 | View ↗ |
| Reta-Peptide United States LL37 5MG TESTED 67% · 261 | LL37 5MG | 5 mg vial | $145.00 | $29.00 | View ↗ |
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LL-37 pricing FAQ
What is the cheapest LL-37 right now?
Accelerate Labs currently lists LL-37 at $3.30 per mg (LL-37 10MG, $32.99), the lowest of the 35 vendors we compare. The median is $12.00 per mg, so shopping around can save a lot.
How much does LL-37 cost per mg?
Across 35 vendors, injectable LL-37 ranges from $3.30 to $29.00 per mg, with a median of $12.00. Larger vials generally cost less per mg, which is why we normalize every listing to a price per milligram.
How much does a 5 mg vial of LL-37 cost?
A 5 mg vial of LL-37 costs between $24.49 and $145.00 across 28 vendors, with a median of $75.00. The cheapest is Glacier Aminos at $24.49.
Which LL-37 vendors publish a COA?
35 of the 40 vendors listing LL-37 say they publish certificates of analysis (COAs). A COA is the vendor’s own claim and can be copied or re-dated, so we also show independent test ratings (Finnrick) on each vendor page where they exist, and let you filter to “COA claimed” vendors.
Is there human research on LL-37?
PubMed lists 4,704 papers on LL-37: 63 randomized controlled trials, 144 human clinical studies and 824 animal or lab-only studies, plus 20 registered clinical trials. We grade the evidence base as “Strong”: Several randomized controlled trials in humans, often summarized by meta-analyses. This describes how much research exists, not whether it works.
Is LL-37 legal and safe to use?
LL-37 is sold for laboratory research use only. PeptideComps compares prices and does not give medical advice, and we can’t vouch for any product’s quality or legality — check the rules where you live.