Peptides for immunity
Your body's own antibiotics, thymus hormones and the drugs that guard transplants and fight infections.
Thymosin Alpha-1
From the thymus, where T cells mature: a peptide meant to boost them, given for hepatitis B and weak flu-shot responses.
The Hierophant · In clinical trials
LL-37
An antibiotic your skin and white cells cut from cathelicidin; vitamin D turns its gene on. Sold for infections and wounds.
Strength · Not FDA approved
Cyclosporine
Made by a soil fungus, this ring of 11 amino acids reins in T cells, the immune cells that reject a transplanted kidney or heart.
FDA approved
Enfuvirtide
Copied from gp41, the protein HIV folds to fuse with your cells: it binds gp41 and blocks the fold, so the virus stays outside.
FDA approved
Murepavadin
An antibiotic designed to hit LptD, an outer-coat protein that only Pseudomonas bacteria have in this form. Sniper, not shotgun.
Not FDA approved
Nangibotide
A decoy peptide meant to hold back TREM-1, the immune receptor that amplifies inflammation, in septic shock. Volume down, not off.
Not FDA approved
Polymyxin B & Colistin
Last-resort antibiotics whose charged ring and fatty tail pierce the outer membrane of gram-negative bacteria. Hard on kidneys.
FDA approved
