Understand the source comparison
GHRP-6 Acetate vs Sermorelin: Mechanism Comparison
Receptor Target GHS-R1a (ghrelin receptor) GHRH receptor GHRP-6 triggers hunger; sermorelin does not Mechanism of Action Releases stored GH from pituitary granules Stimulates new GH synthesis and secretion GHRP-6 = rapid pulse; sermorelin = sustained elevation
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Receptor Target
- GHS-R1a (ghrelin receptor)
- GHRH receptor
- GHRP-6 triggers hunger; sermorelin does not
- Mechanism of Action
- Releases stored GH from pituitary granules
- Stimulates new GH synthesis and secretion
- GHRP-6 = rapid pulse; sermorelin = sustained elevation
- Onset to Peak GH
- 30–45 minutes
- 60–90 minutes
- GHRP-6 acetate produces faster but shorter GH spike
- Half-Life
- 20–30 minutes
- 8–12 minutes (pharmacodynamic effect lasts 2–3 hours)
- Sermorelin has longer-lasting downstream effect
- Appetite Effect
- Increases food intake 25–40% within 60 minutes
- No appetite modulation
- GHRP-6 confounds metabolic studies if appetite isn't controlled
- Typical Dosing
- 100–200 mcg, 2–3× daily
- 200–500 mcg, once daily before bed
- GHRP-6 requires more frequent administration
- Primary Research Use
- Ghrelin pathway studies, appetite research, acute GH pulses
- Restoration of age-related GH decline, metabolic studies
- Choose based on whether appetite effects are desired or problematic