Ipamorelin Peptide: Benefits, Dosage & CJC-1295 Stack
Peptides Calculator Guides Stacks News Compare Glossary Medically reviewed by the Rite Aid Health Team Ipamorelin is studied for recovery, body composition, and sleep. It prompts growth hormone release and is often paired with CJC-1295. IGF-1 is commonly monit
Ipamorelin is studied for recovery, body composition, and sleep. It prompts growth hormone release and is often paired with CJC-1295. IGF-1 is commonly monitored during treatment.
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What is ipamorelin?
Ipamorelin is a synthetic pentapeptide — a chain of five amino acids — classified as a growth-hormone secretagogue. It is an agonist of the ghrelin receptor (the GH-secretagogue receptor), the same receptor the body's hunger hormone acts on.
Activating that receptor triggers the pituitary to release growth hormone. What sets ipamorelin apart from earlier secretagogues is its selectivity: it stimulates GH release without meaningfully raising cortisol, prolactin, or appetite.
Benefits and uses
Ipamorelin's benefits follow from the GH pulse it triggers:
- Recovery. Growth hormone drives tissue repair, so ipamorelin is used to support recovery from training.
- Body composition. Higher GH and IGF-1 support lean mass and fat metabolism.
- Sleep quality. GH is released in deep sleep, and users commonly report improved sleep on ipamorelin.
- Cleaner profile than older secretagogues. Because it spares cortisol and prolactin and doesn't spike appetite, it produces the GH benefit without the side effects that limited earlier compounds.
How it works
Ipamorelin binds the ghrelin/GH-secretagogue receptor on the pituitary and triggers a pulse of growth hormone. That GH then drives the liver to produce IGF-1, which carries out most of GH's tissue effects.
Because it works through the secretagogue receptor — a different system from the GHRH receptor that sermorelin and CJC-1295 act on — ipamorelin and a GHRH analog can be combined to recruit both pathways at once, which produces a larger and more sustained GH release than either alone.
Biology and chemistry details
Ipamorelin is a synthetic pentapeptide, meaning it is built from five amino acids. It is classified as a growth-hormone secretagogue because it triggers release of stored growth hormone rather than replacing growth hormone directly.
Its receptor target is the ghrelin receptor, also called the growth-hormone secretagogue receptor or GHSR. The reason ipamorelin is considered cleaner than older GHRPs is receptor selectivity: it stimulates GH release with less spillover into cortisol, prolactin, or appetite signaling.
Dosage and administration
Ipamorelin is given by subcutaneous injection, commonly dosed at night and/or before training to align with natural GH release. It is most often run alongside CJC-1295 rather than on its own. Exact dosing is set by the prescribing provider; there is no FDA-approved ipamorelin product.
Reconstitution (mixing the lyophilized powder with bacteriostatic water) and drawing the right volume on an insulin syringe is where most people make errors.
Use the peptide dosage calculator to convert your target dose into syringe units for your vial size.
Side effects and safety
Ipamorelin's selectivity gives it a favorable side-effect profile relative to older secretagogues — it does not spike cortisol, prolactin, or appetite.
Reported effects are generally mild: injection-site reactions, headache, flushing, or transient lightheadedness. As with any GH-axis therapy, monitor IGF-1 to keep GH activity in a safe range, and work with a provider. Long-term human safety data is limited.
Cost and how to get ipamorelin
Cost depends on the pharmacy, the dose, and whether it is run with CJC-1295, and is set at the point of prescription — we do not publish a price here.
If prescribed after an evaluation that includes baseline blood work, ipamorelin should come from an appropriate pharmacy. Products sold online "for research use only" are not approved or quality-controlled for human use and carry both quality and legal risk.
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Ipamorelin and CJC-1295 — why they're stacked
Ipamorelin is almost always run with CJC-1295, and the reason is mechanical. Ipamorelin is a secretagogue acting on the ghrelin receptor; CJC-1295 is a GHRH analog acting on the GHRH receptor.
Triggering both receptors at once produces a larger, more sustained GH pulse than either does alone — the secretagogue amplifies the pulse while the GHRH analog extends it.
Sermorelin is the GHRH analog used where a shorter-acting signal is preferred, and MK-677 is the oral secretagogue alternative. For stack comparisons, see how muscle and performance peptides are combined.
Blood work to track ipamorelin
Ipamorelin's purpose is to raise growth hormone, so the blood work confirms whether it's working and keeps it in a safe range:
- IGF-1 — the primary readout. IGF-1 reflects average GH activity and should rise if ipamorelin is working. This is the single most useful test.
- Human growth hormone — a direct GH measurement to complement IGF-1.
- Bodybuilder's hormone test — broader hormonal context for those running a GH-axis cycle for body composition.
Test at baseline before you start and again at 4–8 weeks to confirm IGF-1 has moved.
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References
- PubMed: Ipamorelin and growth hormone secretion literature
- PubMed: Growth hormone secretagogues and ghrelin receptor pharmacology
- FDA: Bulk drug substances used in compounding under Section 503A
Banned in competitive sport. This peptide is prohibited by the World Anti-Doping Agency (WADA), and athletes subject to drug testing can face sanctions for using it. Check current WADA and league rules before considering it.
For general education only — not medical advice or a treatment recommendation. Peptides are not a substitute for care from a licensed provider. Talk to a qualified healthcare professional before you start, stop, or change any peptide, medication, or supplement.
FAQ
Recovery, body composition, and sleep — all driven by triggering a clean pulse of the body's own growth hormone. It is favored for doing so without raising cortisol, prolactin, or appetite.
They act on different receptors — ipamorelin on the ghrelin/secretagogue receptor, CJC-1295 on the GHRH receptor. Triggering both at once produces a larger, more sustained GH pulse than either alone.
By subcutaneous injection, commonly at night and/or before training, usually alongside CJC-1295. There is no FDA-approved product or official dosing; dosing is set by the prescribing provider.
Generally mild — injection-site reactions, headache, flushing, lightheadedness. Its selectivity means it avoids the cortisol, prolactin, and appetite effects of older secretagogues. Long-term human safety data is limited.
IGF-1 is the marker that confirms it. Test at baseline and again at 4–8 weeks; IGF-1 should rise if the peptide is doing its job.
Sleep and recovery changes are often reported within the first weeks. Body-composition changes typically need 8–12 weeks, though IGF-1 can shift within the first month.