⚖ Head-to-Head · GHRH Analogues

Tesamorelin vs Sermorelin

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

Tesamorelin
Growth Hormone
Approved
Growth HormoneWeight ManagementFDA ApprovedBody Composition
Tesamorelin (Egrifta) is a GHRH analog modified with a trans-3-hexenoic acid group at the N-terminus, which protects against dipeptidyl peptidase IV (DPP-IV) enzymatic cleavage and significantly extends biological activi…
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Sermorelin
Growth Hormone
Compounding Only
Growth HormoneAnti-agingRecoverySleep
Sermorelin is a synthetic analog of the first 29 amino acids of endogenous GHRH, retaining full biological activity at the GHRH receptor. It was FDA approved (Geref) for GH deficiency in children from 1997 until its volu…
Full Sermorelin profile →
Technical Specs Comparison
MetricTesamorelinSermorelin
Research Status FDA Approved Extensively Studied
Molecular Weight 5,135.9 Da 3,357.9 Da
Half-Life ~26–38 min ~10–20 min
Peak Time ~30–60 min ~30–60 min
Typical Dose 1–2 mg 200–500 µg
Frequency Once daily Once daily (bedtime)
Route Subcutaneous Subcutaneous
Amino Acids 44 29
WADA Status Prohibited Prohibited
FDA Status Approved Compounding Only
Stack Compatibility & Key Differences
Tesamorelin has FDA approval; Sermorelin is research-only.
PK Plotter
Visualize Tesamorelin plasma levels → Plot →
Frequently Asked Questions
What is the difference between Tesamorelin and Sermorelin?
Tesamorelin: Tesamorelin (Egrifta) is a GHRH analog modified with a trans-3-hexenoic acid group at the N-terminus, which protects against dipeptidyl peptidase IV (DPP-IV) enzymatic cleavage and significantly extends biological activi… Sermorelin: Sermorelin is a synthetic analog of the first 29 amino acids of endogenous GHRH, retaining full biological activity at the GHRH receptor. It was FDA approved (Geref) for GH deficiency in children from 1997 until its volu…
Can you stack Tesamorelin and Sermorelin?
Tesamorelin has FDA approval; Sermorelin is research-only.
Which has a longer half-life, Tesamorelin or Sermorelin?
Tesamorelin half-life: ~26–38 min. Sermorelin half-life: ~10–20 min.
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 2026-06-07.
Peer-reviewed sources Audit timestamp: 2026-06-07 Data version: ASCEND Wiki 2026
Data sourced from ASCEND Wiki · Tesamorelin profile · Sermorelin profile · All comparisons
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