Thymosin Alpha-1 (Zadaxin): Immune-Modulating Peptide
28-amino-acid peptide originally isolated from thymus. Approved in 30+ countries for hepatitis B; investigated for sepsis, cancer adjuvant and COVID-19.
Immune & Antimicrobial Peptides
Peptides with documented effects on immune signaling, infection defense, or host-defense pathways. Thymosin α-1 is approved in ~35 countries for hepatitis; LL-37 is the only human cathelicidin with extensive antimicrobial data. Both have solid mechanism but limited regulatory footprint in the US/EU.
Peptides in this category
LL-37: Human Cathelicidin Antimicrobial Peptide
Endogenous 37-residue cationic peptide with broad antimicrobial and immunomodulatory activity. Investigational for infection, wound healing and chronic ulcers.