LL-37 vs Probiotics
Both are used for immunity. Here's how they compare on human evidence, mechanism, safety and availability — in plain English.
| LL-37 | Probiotics | |
|---|---|---|
| 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. | Live strains that competitively exclude pathogens, produce short-chain fatty acids (butyrate → colonocyte fuel, FFAR signalling), and modulate gut immunity. Effects are strain-specific, not generic. |
| In plain English | A natural antibiotic your own body makes; explored for infections and healing. Very early for supplemental use. | Helpful bacteria that crowd out bad ones and feed your gut lining. The catch: benefits depend on the specific strain, so match strain to goal. |
| Bottom line | Interesting antimicrobial biology; minimal human supplement data. | Match strain to condition; not interchangeable. |
| Availability | Not widely approved | Available over the counter |
Which is better for immunity?
Probiotics has the stronger human-evidence rating (★★★☆☆ vs ★★☆☆☆), but the right choice still depends on your goal, tolerance and budget.
Full breakdowns: LL-37 · Probiotics.
Common questions
Is LL-37 or Probiotics better for immunity?
Probiotics 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 Probiotics?
LL-37: Interesting antimicrobial biology; minimal human supplement data. — Probiotics: Match strain to condition; not interchangeable.