Ipamorelin 2 mg — Selective Growth Hormone Secretagogue
Ipamorelin is a synthetic pentapeptide growth hormone secretagogue that acts on the growth hormone secretagogue receptor (GHS-R/ghrelin receptor) to stimulate pulsatile GH release from the anterior pituitary. What distinguishes Ipamorelin from other GHRP-class peptides is its high selectivity — preclinical studies indicate it stimulates GH release without the significant cortisol and prolactin elevations associated with GHRP-2 and GHRP-6.
This selectivity makes Ipamorelin particularly valuable in research settings where investigators need to study GH-mediated effects in isolation, without the confounding influence of cortisol-driven stress responses or prolactin-mediated pathways.
Product Specifications
| Product Name | Ipamorelin 2 mg |
| Molecular Formula | C₃₈H₄₉N₉O₅ |
| Molecular Weight | 711.85 g/mol |
| CAS Number | 170851-70-4 |
| Amino Acids | 5 residues (pentapeptide) |
| Target Receptor | GHS-R (ghrelin receptor) |
| Purity | ≥99% (HPLC & MS verified) |
| Form | White lyophilised powder |
| Solubility | Water-soluble (bacteriostatic water) |
| Storage | -20°C (lyophilised) · 2–8°C (reconstituted, use within 4 weeks) |
Research Background
Selective GH release — Ipamorelin activates the GHS-R to trigger GH secretion in a dose-dependent manner while producing minimal effects on ACTH (and therefore cortisol) and prolactin secretion. This selectivity distinguishes it from GHRP-2 and GHRP-6, which show broader hormonal effects.
Synergistic combination research — Ipamorelin is commonly studied alongside GHRH analogues such as CJC-1295 (MOD GRF 1-29). The rationale: GHRH analogues prime the pituitary for GH release while GHS-R agonists like Ipamorelin amplify the secretory pulse. Together, they are thought to produce synergistic GH output greater than either compound alone.
Metabolic and body composition research — GH-axis modulation through selective secretagogues like Ipamorelin allows researchers to study downstream effects on IGF-1 production, lipid metabolism, and body composition parameters without the metabolic side effects of direct GH administration.
Reconstitution & Related Products
Reconstitute with 1–2 ml of bacteriostatic water. Compatible for co-reconstitution with CJC-1295. Pre-mixed option: Ipamorelin + MOD GRF Blend (3/3 mg). Also see GHRP-2, GHRP-6, and our full Growth Hormone Secretagogues range.
All products sold by BioLab Peptides are intended strictly for laboratory and research purposes. Not for human or veterinary consumption.




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