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Ipamorelin – Research Overview
Chemical name: Aib-His-D-2-Nal-D-Phe-Lys-NH₂
Class: Selective growth hormone secretagogue (GHS)
Primary target: Ghrelin / Growth Hormone Secretagogue Receptor (GHSR-1a)
Molecular weight: ~711.9 Da
Activity: Mimics the action of ghrelin on pituitary growth hormone release (signals GH secretion without affecting other hormones)
Ipamorelin is a synthetic pentapeptide investigated in preclinical research for its highly selective ability to stimulate growth hormone release (GH secretion) through the ghrelin receptor.
It is known for its selectivity, meaning it does not significantly alter cortisol, prolactin, or ACTH in research models
(unlike some older GHS peptides).
Molecular & Pharmacological Profile
In preclinical models, Ipamorelin has been shown to:
Mechanism of Action (Preclinical)
Ipamorelin acts through the ghrelin receptor, producing GH release in a controlled and predictable way.
Preclinical Research: Potential Applications
Ipamorelin has been investigated across various animal and cell-based research contexts:
GH upregulates:
Metabolic Findings
Rodent studies show:
Bone and Tissue Studies
GH-related findings include:
Neurological Findings
GH modulates:
Learning and memory biomarkers
(Ipamorelin’s effects here are indirect through GH pathways.)
Key areas of study and potential use include:
Growth Hormone Deficiency (GHD) treatment: As it stimulates GH release, it has been investigated as a potential treatment for both adult and childhood GHD.
Body Composition Improvement: Studies show potential for increasing lean muscle mass and reducing body fat, making it a focus in age management and fitness contexts.
Bone Health: Research, primarily in animal models, has indicated that ipamorelin may increase bone mineral density and enhance bone formation, suggesting potential in the prevention and treatment of osteoporosis.
Wound and Injury Healing: By promoting cellular repair and collagen production, it is being investigated for enhancing recovery from injuries, exercise, or surgery.
Sleep Quality: Clinical and preclinical evidence suggests ipamorelin can improve sleep architecture, specifically enhancing slow-wave sleep duration and overall sleep quality.
Metabolic Syndrome and Type 2 Diabetes Management: It is being investigated for its potential to improve insulin sensitivity and lipid profiles.
Anti-Aging and Regenerative Medicine: Due to the natural decline of GH with age, ipamorelin is used in age management protocols to help mitigate related symptoms like fatigue, decreased muscle tone, and reduced skin elasticity.
Neuroprotection and Cognitive Function: Emerging studies suggest potential benefits for cognitive function, including memory and focus, and neuroprotective effects.
HIV-associated Wasting: Ipamorelin has been an investigational use for managing muscle atrophy associated with conditions like HIV.
Safety & Tolerability (Preclinical)
Ipamorelin is considered one of the most selective GH secretagogues in preclinical research:
Low off-target hormone activation
(minimal cortisol, prolactin, and ACTH changes)
Well-tolerated in rodent studies at standard research doses
Low desensitization rate
(receptor continues responding to stimulation)
No significant effect on hunger
(unlike ghrelin mimetics such as GHRP-6)
Long-term human safety remains undetermined, and Ipamorelin is not approved for therapeutic use.
Regulatory Status & Disclaimer
Key References (Preclinical)
Raun K. et al. Ipamorelin: Selective GH secretagogue profile in rats. Endocrinology.
Svensson J. et al. GHSR-1a pathway activation by Ipamorelin. Growth Horm IGF Res.
Broglio F. et al. Comparison of Ipamorelin with GHRP-6 in endocrine models. J Clin Endocrinol Metab.
Kojima et al. Ghrelin receptor signaling pathways and GH release. Nature.
Hickey G. GH secretagogues and metabolic modulation in animal models. Peptides.
Product Note:
All products are shipped in lyphollized or powder form and must be reconstituted to a liquid for research and testing. We are unable to provide any dosing instructions, however all products should be considered pharmaceutical grade.
Storage: Peptides should be stored in a dry, cool, dark place. For best preservation, store at 4°C or colder away from bright light.