Sermorelin vs Tesamorelin
Original GHRH 1-29 vs stabilized GHRH analog.
| Attribute | Sermorelin GHRH(1-29) | Tesamorelin Stabilized GHRH analog |
|---|---|---|
| Category | Muscle Growth & Performance | Muscle Growth & Performance |
| Best known for | Endogenous GH-release research | Visceral fat reduction research |
| In plain English | The original GH peptide. Sermorelin is shorter-acting and milder than CJC-1295 — researchers consider it the gentle introduction to GH peptide research. | Tesamorelin is the GH peptide with the strongest data for shrinking visceral (belly) fat specifically. |
| How it works | Stimulates pituitary GH release by binding the GHRH receptor. | Activates GHRH receptors, increasing GH and IGF-1 with documented preferential effects on visceral adipose tissue. |
| Researchers study | Age-related GH decline, body composition, sleep, and pediatric GH deficiency. | Visceral fat reduction, lipid metabolism, and cognitive function in older adults. |
| Internet discussion | Older audience favors it for being well-studied with a long history. | Discussed by people specifically targeting belly fat. |
Sermorelin
Endogenous GH-release research
The original GH peptide. Sermorelin is shorter-acting and milder than CJC-1295 — researchers consider it the gentle introduction to GH peptide research.
Stimulates pituitary GH release by binding the GHRH receptor.
Age-related GH decline, body composition, sleep, and pediatric GH deficiency.
Older audience favors it for being well-studied with a long history.
Sermorelin is the original GHRH analog with the longest research history in GH peptide work.
Tesamorelin
Visceral fat reduction research
Tesamorelin is the GH peptide with the strongest data for shrinking visceral (belly) fat specifically.
Activates GHRH receptors, increasing GH and IGF-1 with documented preferential effects on visceral adipose tissue.
Visceral fat reduction, lipid metabolism, and cognitive function in older adults.
Discussed by people specifically targeting belly fat.
Tesamorelin is the GHRH analog with strongest data for reducing visceral fat specifically.

