Sermorelin vs HGH 191AA
Stimulating native release vs direct GH delivery.
| Attribute | Sermorelin GHRH(1-29) | HGH 191AA Recombinant Human Growth Hormone |
|---|---|---|
| Category | Muscle Growth & Performance | Muscle Growth & Performance |
| Best known for | Endogenous GH-release research | Reference growth hormone 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. | The real thing. Where peptides stimulate the body to make more GH, HGH 191AA is the GH molecule itself. |
| How it works | Stimulates pituitary GH release by binding the GHRH receptor. | Binds the GH receptor across tissues, stimulating IGF-1 production, lipolysis, and protein synthesis. |
| Researchers study | Age-related GH decline, body composition, sleep, and pediatric GH deficiency. | GH deficiency, body composition, recovery, and longevity. |
| Internet discussion | Older audience favors it for being well-studied with a long history. | Long-running anti-aging discussion topic. |
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.
HGH 191AA
Reference growth hormone research
The real thing. Where peptides stimulate the body to make more GH, HGH 191AA is the GH molecule itself.
Binds the GH receptor across tissues, stimulating IGF-1 production, lipolysis, and protein synthesis.
GH deficiency, body composition, recovery, and longevity.
Long-running anti-aging discussion topic.
HGH 191AA is recombinant human growth hormone — the reference standard for GH research.