Understand the source comparison
Is LL-37 Safe Long Term Use: Research Peptide Comparison
LL-37 28 days (topical) 90 days (rodent, subcutaneous) Proteolytic degradation (neutrophil elastase, cathepsin G) None identified in animal models; human data insufficient beyond 4 weeks Low theoretical toxicity risk based on endogenous status and rapid cleara
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- LL-37
- 28 days (topical)
- 90 days (rodent, subcutaneous)
- Proteolytic degradation (neutrophil elastase, cathepsin G)
- None identified in animal models; human data insufficient beyond 4 weeks
- Low theoretical toxicity risk based on endogenous status and rapid clearance, but clinical validation beyond 28 days absent
- BPC-157
- 14 days (gastric ulcer trial)
- 180 days (rodent, oral and injectable)
- Renal excretion, minimal hepatic metabolism
- Angiogenic effects may theoretically promote tumor growth in undiscovered malignancies (no clinical evidence)
- Extensively studied in animal models with no acute toxicity; human safety data limited to short-term trials
- Thymosin Beta-4
- 42 days (corneal injury trial)
- 120 days (rodent, subcutaneous)
- Renal clearance, intracellular sequestration in actin-binding pools
- Cardiac remodeling effects under investigation; theoretical arrhythmia risk in susceptible populations
- Well-tolerated in published trials; long-term cardiovascular monitoring recommended for extended use
- Selank
- 21 days (anxiety trial)
- 90 days (rodent, intranasal)
- Enzymatic degradation by serum peptidases
- Anxiolytic tolerance may develop with continuous use; rebound anxiety upon cessation observed anecdotally
- Short half-life and lack of receptor downregulation suggest low physical dependence risk, but withdrawal protocols unstudied
- Epithalon
- 10 days (pineal function trial)
- 60 days (rodent, subcutaneous)
- Renal excretion, rapid plasma clearance
- Telomerase activation mechanisms remain incompletely characterized; theoretical oncogenic risk debated
- Minimal toxicity in animal studies, but human trials extremely limited; long-term cellular effects require further investigation