Growth Hormone · GHRP

Ipamorelin

Ipamorelin is a pentapeptide growth hormone-releasing peptide with high selectivity for GH release and minimal effect on prolactin, cortisol, or appetite. The most-prescribed GHRP in modern peptide protocols.

Category: Growth Hormone Secretagogues Last updated 2026-05-11
Ipamorelin at a glance

Ipamorelin is a pentapeptide growth hormone-releasing peptide with high selectivity for GH release and minimal effect on prolactin, cortisol, or appetite. The most-prescribed GHRP in modern peptide protocols. Mechanism: GHRP / GH secretagogue (selective). Typical route: Subcutaneous. FDA status: Not FDA-approved. Dispensed by compounding pharmacies; the most common GHRP in current clinical and telehealth practice.

Drug classGHRP / GH secretagogue (selective)
Half-life~2 hours
RouteSubcutaneous
Common dosing100-300 mcg, 2-3x/day
FDA statusNot approved
Available throughCompounding pharmacies

Mechanism of action

Ipamorelin selectively activates the ghrelin receptor on pituitary somatotrophs, stimulating GH release with minimal off-target effects. Its clean side-effect profile makes it the preferred choice for long-term GH-support protocols, usually paired with CJC-1295.

Dosing reference

Subcutaneous: 100-300 mcg, two to three times daily. Most common protocol is CJC-1295 + Ipamorelin combined at 100 mcg + 100 mcg per dose, taken on empty stomach and before bed.

Dosing information is provided for educational reference and is not medical advice. Patients should not initiate or modify any peptide regimen without consulting a licensed clinician. See our medical disclaimer.

FDA status & regulatory framework

Not FDA-approved. Dispensed by compounding pharmacies; the most common GHRP in current clinical and telehealth practice.

U.S. telehealth providers that work with Ipamorelin

#1 of 4
88/100v3.0 six-pillar rubric

Starting at $160/mo. Defy Medical is one of the providers covered in our editorial directory that dispenses or coordinates Ipamorelin.

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#2 of 4
85/100v3.0 six-pillar rubric

Starting at $180/mo. Marek Health is one of the providers covered in our editorial directory that dispenses or coordinates Ipamorelin.

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#3 of 4
76/100v3.0 six-pillar rubric

Starting at $149/mo. Maximus is one of the providers covered in our editorial directory that dispenses or coordinates Ipamorelin.

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#4 of 4
80/100v3.0 six-pillar rubric

Starting at $149/mo. Hone Health is one of the providers covered in our editorial directory that dispenses or coordinates Ipamorelin.

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Frequently asked questions about Ipamorelin

Why is Ipamorelin combined with CJC-1295?

Ipamorelin is a ghrelin-receptor agonist; CJC-1295 is a GHRH analog. The two act on different receptors and produce a larger, more sustained GH pulse together than either alone.

Is Ipamorelin safe long-term?

Long-term human safety data is limited. The clean side-effect profile is its primary advantage over other GHRPs, but multi-year use should be physician-monitored.

Lead Medical Researcher
Dr. Sam Saberian
Doctor of Pharmacy; leads protocol research, peptide pharmacology, and provider evaluation.
Medical Reviewer
Alen A. Schwartz, MD
Board-certified physician; reviews clinical accuracy of every published page.
Edited by
Julliana Edwards
Editorial standards, factual accuracy, and corrections workflow.