How it works
Ipamorelin is a synthetic pentapeptide that selectively agonizes the ghrelin/GHS receptor (GHS-R1a) on anterior-pituitary somatotrophs, stimulating growth-hormone release. Its defining property is selectivity: unlike earlier growth-hormone-releasing peptides, published research reports little to no elevation of ACTH, cortisol, or prolactin at GH-releasing doses, producing a cleaner stimulus for studies isolating the GH axis.
Learn more about the science →Certificate of Analysis+
LC-MS identity, HPLC purity (≥99%), mass spec confirmation against 711.85 g/mol, endotoxin by LAL, appearance. Third-party ISO-17025 verified.
View full certificate →Specifications+
Storage & handling+
Lyophilized: −20°C, 24 months. Reconstituted: 2–8°C, use within 30 days. Reconstitute with bacteriostatic water; swirl gently.
We ship in insulated parcels with phase-change cooling and a tamper-evident seal.
FAQs+
What makes ipamorelin “selective”?+
It releases growth hormone through the ghrelin/GHS receptor with minimal effect on cortisol and prolactin — a cleaner profile than earlier GHRPs in published research.
How does ipamorelin differ from sermorelin or CJC-1295?+
Those are GHRH analogs acting on the GHRH receptor. Ipamorelin acts on the separate ghrelin/GHS receptor, which is why the two classes are often studied together.
What's a typical reconstitution concentration?+
Investigator-dependent. A common preparation is 1 mL bacteriostatic water per 10mg vial, yielding 10 mg/mL.
How is identity confirmed on the COA?+
Mass spec against the theoretical mass of 711.85 g/mol, plus HPLC purity and a third-party ISO-17025 repeat assay.
Is ipamorelin stable in solution?+
Yes, with standard cold storage. 30 days at 2–8°C is the operating spec.
Is ipamorelin subscription-eligible?+
Yes. 15% off on a 60-day cycle.
The research behind this compound, cited in full.
Provided for context only. None of the studies cited below evaluate hábit material specifically; they document the published literature on the compound and its mechanism. Research-use claims are not therapeutic claims.
- [01] Raun K. et al. Eur J Endocrinol 139 (1998): 552–561.
- [02] Gobburu JV. et al. J Clin Pharmacol 39 (1999): 1187–1194.
- [03] Andersen NB. et al. Growth Horm IGF Res 11 (2001): 266–271.
- [04] Ipamorelin, the first selective growth hormone secretagogue
Verified buyer notes
Initials only — every quote is verified against an order record. We don’t ghost-write reviews.
“COA matched what we ran in-house. Powder reconstituted clean, no haze. Did exactly what we needed it to.”
“Switched after two bad lots from a previous source. Three orders in, zero issues.”
“Asked support a purity question and got the raw HPLC trace back within the hour. That transparency is why we reorder.”