⚖ Head-to-Head · Longevity vs Immune

Epithalon vs Thymosin Alpha-1

Mechanism, half-life, dosing & research status compared side-by-side.

Epithalon
Longevity & Telomere
Not Approved
LongevityTelomereAnti-agingPineal
Epithalon (Epitalon) is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) derived from the pineal gland bioregulator Epithalamin. It was developed by the St. Petersburg Institute of Biogerontology by Professor Vladimir Khavinso…
Full Epithalon profile →
Thymosin Alpha-1
Immune Support
Not Approved (US)
Immune SupportAnti-agingAntiviralLongevity
Thymosin Alpha-1 (TA1) is a 28-amino acid peptide naturally secreted by thymic epithelial cells, commercially available as Thymalfasin (Zadaxin). It is approved as a pharmaceutical drug in over 35 countries (including Ch…
Full Thymosin Alpha-1 profile →
Technical Specs Comparison
MetricEpithalonThymosin Alpha-1
Research Status Extensively Studied Extensively Studied
Molecular Weight 390.3 Da 3,108 Da
Half-Life ~30 min ~2 hours
Peak Time ~20–30 min ~1–2 hours
Typical Dose 5–10 mg 0.8–1.6 mg
Frequency Once daily × 10–20 days (cycle) 2× weekly or daily
Route Subcutaneous / IV Subcutaneous
Amino Acids 4 28
WADA Status Not Listed Not Listed
FDA Status Not Approved Not Approved (US)
Stack Compatibility & Key Differences
Both are active research compounds. See individual pages for full protocol data.
PK Plotter
Visualize Epithalon plasma levels → Plot →
Frequently Asked Questions
What is the difference between Epithalon and Thymosin Alpha-1?
Epithalon: Epithalon (Epitalon) is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) derived from the pineal gland bioregulator Epithalamin. It was developed by the St. Petersburg Institute of Biogerontology by Professor Vladimir Khavinso… Thymosin Alpha-1: Thymosin Alpha-1 (TA1) is a 28-amino acid peptide naturally secreted by thymic epithelial cells, commercially available as Thymalfasin (Zadaxin). It is approved as a pharmaceutical drug in over 35 countries (including Ch…
Can you stack Epithalon and Thymosin Alpha-1?
Both are active research compounds. See individual pages for full protocol data.
Which has a longer half-life, Epithalon or Thymosin Alpha-1?
Epithalon half-life: ~30 min. Thymosin Alpha-1 half-life: ~2 hours.
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Verified Scientific Data
All specifications on this page are sourced from peer-reviewed literature and primary research. Half-life values, dosing ranges, and mechanism data are cross-referenced against published studies. Last audited 2026-06-15.
● Peer-reviewed sources ● Audit timestamp: 2026-06-15 ● Data version: ASCEND Wiki 2026
Data sourced from ASCEND Wiki · Epithalon profile · Thymosin Alpha-1 profile · All comparisons
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