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Specimen Atlas of Research Peptides81 plates · MIT
Side-by-side · Research reference

EpitalonvsLL-37

Side-by-side comparison across mechanism, dosage, evidence, side effects, administration, and stack synergies. Citations on every claim where available.

AHuman-MechanisticAUTO-DRAFTED8/37 cited
BHuman-MechanisticHUMAN-REVIEWED15/35 cited
Epitalon
Pineal bioregulator · Telomerase activator
5–10 mgPer cycle doseKhavinson 2003
HumanMechanisticKhavinson 2003
HoursHalf-life (est)
SQ or IM · Abdomen · Daily for 10–20 days
LL-37
Cathelicidin · Human AMP
Broad-spectrumAntimicrobial activity
Membrane disruptionPrimary mechanismLu 2026He 2026
Innate immunityHost defense rolePinheiro 2026Zhang 2026
Endogenous · Secreted at inflammation sites

01Mechanism of Action

Parameter
Epitalon
LL-37
Primary target
Telomerase activity (proposed); pineal melatonin axis modulationKhavinson 2003
Bacterial membranes · Phosphatidylserine-exposed cellsHe 2026Lu 2026
Pathway
Activation of telomerase reverse transcriptase (hTERT) in somatic cells; pineal-axis modulation supports endogenous melatoninKhavinson 2003
hCAP-18 precursor → Proteinase-3 cleavage → LL-37 release → Membrane insertion/disruption
Downstream effect
Telomere elongation, improved sleep architecture, reported lifespan extension in aged miceKhavinson 2003
Membrane permeabilization, cytokine induction, autophagy, phagosome-lysosome fusion, chemotaxisAhmad 2026Zhang 2026
Feedback intact?
Origin
Synthetic 4-AA peptide derived from epithalamin (a natural pineal extract)Khavinson 2003
Endogenous human cathelicidin (37-AA fragment, residues 134–170 of hCAP-18)
Antibody development

02Dosage Protocols

Parameter
Epitalon
LL-37
Standard dose
5–10 mg / day for 10–20 days, 1–2× per yearKhavinson 2003
Anecdotal community protocol. Russian clinical literature uses similar cycling.
Frequency
Once daily during a cycle
Lower / starter dose
2.5 mg / day
Evidence basis
In-vitro telomerase + Russian clinical trialsKhavinson 2003
In vitro, animal models, human observational
Duration
10–20 day cycles, 1–2× per year
Reconstitution
Bacteriostatic water
Timing
Pre-sleep preferred (pineal alignment)
Half-life
Hours (estimated)
Endogenous expression
Constitutive in neutrophils, epithelial tissues
Upregulated during infection and inflammation.Pinheiro 2026
Exogenous (experimental)
Dose varies by study; antimalarial ~10–50 μM in vitro
No FDA-approved exogenous formulation.
Plasma levels (malaria)
Elevated in infected patients and miceHe 2026
Exogenous administration reduced parasitemia in murine models.He 2026

04Side Effects & Safety

Parameter
Epitalon
LL-37
Injection site reaction
Mild irritation
Sleep architecture
Improved subjective sleep quality (anecdotal)
Cancer risk
Theoretical via telomerase activation in pre-malignant cells
Long-term safety
Limited Western RCT data
Pregnancy / OB
Avoid
Antibody formation
Not reported
Cytotoxicity (high dose)
Membrane disruption in host cells at supraphysiological concentrations
Pro-inflammatory signaling
Can exacerbate inflammation in certain contexts (context-dependent)Pinheiro 2026
Biofilm formation risk
LL-37-DNA complexes may stabilize dental plaque biofilmsTanabe 2026
Theoretical cancer risk
Immunomodulatory roles in tumor microenvironment under investigation
Absolute Contraindications
Epitalon
  • ·Pregnancy / breastfeeding
  • ·Active malignancy or pre-malignant state
LL-37
Relative Contraindications
Epitalon
  • ·Family history of cancer
LL-37
  • ·Active autoimmune disease (theoretical immune dysregulation)

05Administration Protocol

Parameter
Epitalon
LL-37
1. Reconstitution
Add 1–2 mL bacteriostatic water to 10 mg vial → 5–10 mg/mL.
LL-37 is constitutively expressed in neutrophils and epithelial cells, cleaved from hCAP-18 by proteinase-3 at sites of infection or inflammation.
2. Injection site
SQ — abdomen preferred. Rotate sites.
Synthetic LL-37 and derivatives (e.g., SAMP-12aa) tested in vitro and animal models. Administered via topical, intraperitoneal, or intravenous routes in research settings.
3. Timing
Pre-sleep preferred to align with pineal axis.
LL-37 is resistant to pepsin degradation at gastric pH. Synthetic short peptides designed to retain this stability while reducing toxicity.Lu 2026
4. Storage
Lyophilised: room temp, light-protected. Reconstituted: refrigerate ≤30 days.
5. Needle
29–31G, 4–8 mm insulin syringe.