Tesamorelin: A Research Reference Guide to the GHRH Analog
By Lemon Labs Research Desk · Updated June 29, 2026
In short
Tesamorelin is a synthetic analog of growth-hormone-releasing hormone (GHRH). It is a stabilized form of the GHRH(1-44) sequence, studied in research for its action on the GHRH receptor and the growth-hormone / IGF-1 axis. It is a research-use-only reference compound.
What is tesamorelin?
Tesamorelin is a synthetic peptide analog of GHRH, the hypothalamic hormone that stimulates the pituitary to release growth hormone. It is based on the GHRH(1-44) sequence with a modification that improves stability against enzymatic degradation in research models.
Mechanism studied in the literature
As a GHRH-receptor agonist, tesamorelin is studied for its effects on the growth-hormone axis and the downstream IGF-1 signaling that growth hormone drives. Because it acts upstream at the GHRH receptor, researchers contrast it with growth-hormone secretagogues (ghrelin-receptor agonists) that act through a different pathway.
Handling and quality
Supplied lyophilized; store cold, sealed, and protected from light, and reconstitute in the lab. Verify ≥99% HPLC purity and mass-spec identity on the lot COA.
Research-use-only statement
This compound is supplied strictly for in-vitro research and laboratory use. It is not a drug, supplement, food, or cosmetic, has not been evaluated by the FDA, and is not intended to diagnose, treat, cure, or prevent any disease. It is not for human or veterinary use. All information here summarizes published scientific literature for educational purposes for qualified researchers — it is not medical advice and does not describe human administration.
Reference compounds mentioned
Frequently asked
What kind of peptide is tesamorelin?
Tesamorelin is a stabilized synthetic analog of growth-hormone-releasing hormone (GHRH), based on the GHRH(1-44) sequence. It acts as a GHRH-receptor agonist in research models.
How does tesamorelin differ from a secretagogue like ipamorelin?
Tesamorelin is a GHRH analog acting at the GHRH receptor, while ipamorelin is a ghrelin-receptor (secretagogue) agonist. They engage the growth-hormone axis through different receptors.
Is tesamorelin for human use?
No. Material sold here is a research-use-only reference compound, not for human or veterinary use.