LL-37
People mainly take LL-37 for pain & inflammation. Based on 6 first-hand reports. Ranked #1461 of 1,974 overall.
9
User score
Mostly negative0% positive0% mixed17% negative83% unclear
Of reports that state an outcome, 0% are positive.
Clinical research
Research pending
High-risk compound. Peptides are not approved as supplements, carry serious and sometimes irreversible risks, are banned in competitive sport and may be restricted where you live. Nothing here is a recommendation to use it.
What LL-37 does, according to users
Of the people who reported each effect, the share who said it got better.
betterno changeworse
What the research says
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
Research data for LL-37 is being compiled.
Dosage people report
As stated by users — not a recommendation. Follow the label or your doctor.
dailyas reported
20 day cycleas reported
Reported side effects
How often each side effect came up across all reports.
herxheimer reaction ×1psoriatic arthritis ×1inflammation ×1
What users say
Verbatim quotes, shortened only — each links to the original discussion.
“I have long term Lyme. I use BPC157, Thy Alpha, Thy Beta 5 days a week and and LL-37 every day. LL-37 is the only one that caused me to herx.”
“I may add info on TA1 and/or LL-37 this year.. an immune related peptide”
“I recently tried LL37 and it backfired on me big time. I ended up with chronic psoriatic arthritis for a week in my back and hip.”
“TailorMade ordered ll37 several weeks ago. Nothing showed up. Ignored my one message.”
“LL37 is an antimicrobial peptide that also possesses immunomodulatory properties. Some research suggested that it might help control viral infections”
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User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate