Ipamorelin vs Sermorelin
Ipamorelin and Sermorelin are compared here on the things that actually differ between them: what class each belongs to, what each acts on, how each is supplied and what each costs per milligram. Where the registry has no figure for one of them the row is left out rather than filled in.
Side by side
| Ipamorelin | Sermorelin | |
|---|---|---|
| Class | Growth hormone secretagogue (GHRP) | GHRH analogue |
| Acts on | A pentapeptide ghrelin-receptor agonist studied for selective growth hormone release with minimal effect on cortisol or prolactin, which distinguishes it from earlier GHRPs. | The first 29 amino acids of growth hormone releasing hormone, the shortest fragment retaining full activity at the GHRH receptor. |
| Supplied as | Lyophilised powder or pre-filled pen. Also supplied blended with CJC-1295. | Lyophilised powder or pre-filled pen. |
| Half-life | About two hours. | Very short, around 10 to 20 minutes. |
| Storage | 2-8 C. Reconstituted: refrigerated. | 2-8 C, protected from light. |
| Listings | 3 | 1 |
| Price from | £28 | £70 |
What actually differs
The clearest difference is class: Ipamorelin is a growth hormone secretagogue (GHRP), Sermorelin is a GHRH analogue. They are not supplied the same way. Ipamorelin comes as a lyophilised powder or pre-filled pen. Also supplied blended with CJC-1295, Sermorelin as a lyophilised powder or pre-filled pen. Half-life differs as well: About two hours for Ipamorelin against Very short, around 10 to 20 minutes for Sermorelin.
Quanta Pharma Ipamorelin 10mgin stock£28- SerenQ Ipamorelin + CJC 1295 (No Dac) Peptide Penin stock£55
- SerenQ Ipamorelin 10mg Peptide Penout of stock£55
- SerenQ Sermorelin 15mg Peptide Penout of stock£70
Availability checked 2026-09-09. The product page carries live stock.