LL-37 vs Zinc
Both are used for immunity. Here's how they compare on human evidence, mechanism, safety and availability — in plain English.
| LL-37 | Zinc | |
|---|---|---|
| Human evidence | ★★☆☆☆ | ★★★★☆ |
| Legal status | Not Approved | OTC Supplement |
| How it works | Human cathelicidin (CAMP gene) antimicrobial peptide; disrupts microbial membranes and modulates immunity/wound healing. | Cofactor in 100+ enzymes and required by Leydig cells for testosterone synthesis; a structural ion in "zinc-finger" transcription factors. Lost in sweat, so athletes are frequently deficient — and deficiency directly suppresses… |
| In plain English | A natural antibiotic your own body makes; explored for infections and healing. Very early for supplemental use. | A mineral your testosterone factory can't run without. Sweat it out training, and hormones drop. Fixing a deficiency reliably raises testosterone; taking extra when you're already fine does nothing. |
| Bottom line | Interesting antimicrobial biology; minimal human supplement data. | Valuable if deficient, which many athletes are. |
| Availability | Not widely approved | Available over the counter |
Which is better for immunity?
Zinc has the stronger human-evidence rating (★★★★☆ vs ★★☆☆☆), but the right choice still depends on your goal, tolerance and budget.
Common questions
Is LL-37 or Zinc better for immunity?
Zinc has the stronger human-evidence rating (★★★★☆ vs ★★☆☆☆), but the right choice still depends on your goal, tolerance and budget.
What's the difference between LL-37 and Zinc?
LL-37: Interesting antimicrobial biology; minimal human supplement data. — Zinc: Valuable if deficient, which many athletes are.