LL-37
Immune & Antimicrobial
Not Approved
AntimicrobialWound HealingImmuneInnate Immunity
LL-37 is the only human cathelicidin - the C-terminal 37-amino acid fragment of the precursor protein hCAP-18, cleaved by proteases at sites of infection and inflammation. It is produced primarily by neutrophils, epithel…
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Thymosin Alpha-1
Immune Support
Not Approved (US)
Immune SupportAnti-agingAntiviralLongevity
Thymosin Alpha-1 (TA1) is a 28-amino acid peptide naturally secreted by thymic epithelial cells, commercially available as Thymalfasin (Zadaxin). It is approved as a pharmaceutical drug in over 35 countries (including Ch…
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Stack Compatibility & Key Differences
Both are active research compounds. See individual pages for full protocol data.
Frequently Asked Questions
What is the difference between LL-37 and Thymosin Alpha-1?
LL-37: LL-37 is the only human cathelicidin - the C-terminal 37-amino acid fragment of the precursor protein hCAP-18, cleaved by proteases at sites of infection and inflammation. It is produced primarily by neutrophils, epithel… Thymosin Alpha-1: Thymosin Alpha-1 (TA1) is a 28-amino acid peptide naturally secreted by thymic epithelial cells, commercially available as Thymalfasin (Zadaxin). It is approved as a pharmaceutical drug in over 35 countries (including Ch…
Can you stack LL-37 and Thymosin Alpha-1?
Both are active research compounds. See individual pages for full protocol data.
Which has a longer half-life, LL-37 or Thymosin Alpha-1?
LL-37 half-life: ~minutes (plasma); local effects sustained. Thymosin Alpha-1 half-life: ~2 hours.