Ipamorelin
Shop IpamorelinAlso called: GHRP, Ipamorelin and CJC-1295, Ipamorelin and CJC-1295 without DAC
Ipamorelin is a man-made peptide, which is a tiny chain of building blocks called amino acids. It is a copy of a natural body chemical called ghrelin, which is sometimes called the hunger hormone. Ipamorelin is sold as a white powder for lab studies. It is not an approved medicine. Companies sell it to researchers, and some people seek it out hoping it will help with muscle, recovery, and aging.
Ipamorelin tells the pituitary gland, a small gland in the brain, to let out growth hormone. Growth hormone helps the body build muscle and repair itself. Ipamorelin does this by attaching to a special docking spot on the gland's cells called the ghrelin receptor. This makes growth hormone come out in short bursts, much like the body does on its own. It is known for being very selective, meaning it raises growth hormone without raising other stress hormones.
There is still a lot we do not know. Most studies have been done in animals or in labs, not in large human trials. It is not approved by the FDA, so its safety and long-term effects in people are unclear. Some other similar peptides raise prolactin and cortisol, but ipamorelin causes little of this rise. Anyone thinking about using it should know it is meant for laboratory research only, and using unapproved injectable compounds carries real risks.
Building Blocks
Ipamorelin in Stacks & Blends
Ipamorelin is one of the building blocks in this blend or stack people actually buy:
Natural growth-hormone release — recovery, body composition, sleep
Paired with CJC-1295
Established GH blend
Benefits
What Ipamorelin Helps With
The main themes across 17 research studies, in plain language.
Musculoskeletal
Muscle growth & lean mass
40/100Rated 40/100Source typeVendor / seller pageIndependent sources5Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 18 underlying claimsStudies indicate that increased growth hormone levels may support the development of lean muscle mass and improve overall body composition.
Bone density & skeletal health
40/100Rated 40/100Source typeVendor / seller pageIndependent sources4Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 16 underlying claimsEvidence suggests that stimulation of growth hormone pathways may support bone mineralization, increase bone density, and promote skeletal growth.
Reproductive & hormonal
Selective growth hormone release
50/100Rated 50/100Source typeUnclassified sourceIndependent sources7Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 42 underlying claimsResearch suggests that this peptide stimulates the release of growth hormone in a pulsatile manner, mimicking natural patterns, without significantly elevating stress hormones like cortisol or prolactin.
Safety & hormonal specificity
50/100Rated 50/100Source typeUnclassified sourceIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 10 underlying claimsStudies highlight a favorable safety profile, noting that the peptide selectively targets growth hormone release without significantly affecting cortisol, prolactin, or ACTH levels.
Tissue repair & recovery
40/100Rated 40/100Source typeVendor / seller pageIndependent sources4Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 15 underlying claimsResearch indicates that growth hormone release may accelerate the repair of damaged tissues, reduce muscle soreness, and support post-exercise recovery.
Gastrointestinal motility
50/100Rated 50/100Source typeUnclassified sourceIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 10 underlying claimsEvidence points to prokinetic properties that may accelerate gastric emptying and improve the movement of contents through the digestive tract.
Fat metabolism & weight management
40/100Rated 40/100Source typeVendor / seller pageIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 18 underlying claimsResearch points to a potential role in promoting lipid breakdown and reducing adipose tissue, which may aid in fat loss and weight management.
Metabolic & insulin sensitivity
40/100Rated 40/100Source typeVendor / seller pageIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 7 underlying claimsFindings imply that therapy may help regulate blood sugar levels and improve insulin sensitivity, though individual responses can vary.
Cardiovascular & vasculature support
30/100Rated 30/100Source typeForum or blogIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 2 underlying claimsLimited evidence suggests potential benefits for vascular health and improved blood flow, possibly linked to nitric oxide or metabolic changes.
Neuroprotection & cognitive function
40/100Rated 40/100Source typeVendor / seller pageIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 9 underlying claimsPreliminary studies indicate potential neuroprotective benefits and improvements in cognitive function, possibly mediated through BDNF or other pathways.
Anti-aging & cellular longevity
30/100Rated 30/100Source typeForum or blogIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 10 underlying claimsResearch suggests that cellular repair mechanisms and optimized hormone levels may contribute to anti-aging benefits and overall vitality.
Collagen synthesis & skin health
50/100Rated 50/100Source typeSpecialist communityIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 10 underlying claimsStudies suggest that enhanced growth hormone levels may stimulate collagen production, potentially improving skin elasticity and connective tissue health.
Sleep quality & architecture
50/100Rated 50/100Source typeSpecialist communityIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 16 underlying claimsFindings imply that therapy may improve sleep quality by increasing slow-wave (deep) sleep duration and reducing the time it takes to fall asleep.
Vitality, energy & mood
60/100Rated 60/100Source typeSpecialist communityIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 8 underlying claimsAnecdotal reports and some studies suggest that users may experience improved energy levels, reduced anxiety, and an enhanced sense of well-being.
Synergy & combination therapy
40/100Rated 40/100Source typeVendor / seller pageIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 7 underlying claimsResearch suggests that combining this peptide with other agents (like GHRH analogs) may create synergistic effects, amplifying growth hormone release.
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How People Use It
1 reported routine — each line links to the source it came from.
Self-reported & vendor-suggested
Routines shared by users and sellers in forums and product pages — anecdotal, not tested in clinical trials. We show them for completeness, not as a recommendation.
General
- 100–250 mcg once daily SC (research: 100–300 mcg 2–3×/day) 60/100Rated 60/100Source typeSpecialist communityIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ source
- Weeks 1–2 — 100 mcg · 6 units (0.06 mL)
- Weeks 3–4 — 150 mcg · 9 units (0.09 mL)
- Weeks 5–8 — 200 mcg · 12 units (0.12 mL)
- Weeks 9–12 — 250 mcg · 15 units (0.15 mL)
mg vs mcg: one milligram (mg) equals 1,000 micrograms (mcg) — multiply by 1,000 going from mg to mcg, divide by 1,000 going from mcg to mg. Mixing the two up is a thousand-fold dosing error: 1 mg taken instead of 1 mcg is a 1,000× overdose; 1 mcg instead of 1 mg is a 1,000× underdose. Always double-check the unit label and the decimal place.
Honest expectations
What Ipamorelin doesn’t do
What the sourced research says it doesn’t do — as notable as what it does.
- Selective GH release without cortisol/prolactin elevation 60/100Rated 60/100Source typeSpecialist communityIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↵ source
- Ipamorelin stimulates GH release without significantly affecting cortisol, ACTH, or prolactin even at 200-fold higher doses 60/100Rated 60/100Source typeSpecialist communityIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↵ source
- Ipamorelin stimulates GH without significantly affecting cortisol, ACTH, or prolactin even at 200-fold doses 60/100Rated 60/100Source typeSpecialist communityIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↵ source
Safety
Known Side Effects
Adverse effects reported in the research and by community use.
- Lack of Cortisol/ACTH ElevationMild 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ pubmed.ncbi.nlm.nih.gov
- Interaction with Adrenergic BlockersModerate 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ pubmed.ncbi.nlm.nih.gov
- Altered Efficacy in Diabetic StatesMild 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ pubmed.ncbi.nlm.nih.gov
- Intense hungerMild 60/100Rated 60/100Source typeSpecialist communityIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ peptidepedia.org
- Cortisol elevationModerate 60/100Rated 60/100Source typeSpecialist communityIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ peptidepedia.org
- Flushing or warmthMild 60/100Rated 60/100Source typeSpecialist communityIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ peptidepedia.org
- Mild water retention and transient flushing (ipamorelin)Mild 60/100Rated 60/100Source typeSpecialist communityIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ excelmale.com
- Ipamorelin: mild, transient water retention, temporary flushing, and minimal appetite stimulationMild 60/100Rated 60/100Source typeSpecialist communityIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ excelmale.com
Reported in research and community sources — not exhaustive. Discontinue use and consult a healthcare professional if side effects occur.
Get Ipamorelin
Compare research-grade suppliers with third-party COAs and published purity data. For in-vitro and laboratory research use only — not for human consumption, diagnosis, or treatment.
Technical Details (sequence & mechanism — click to expand)
Amino Acid Sequence
Mechanism of Action
Ipamorelin is a synthetic pentapeptide, a third-generation growth hormone releasing peptide (GHRP) and selective agonist of the ghrelin/growth-hormone secretagogue receptor (GHS-R) on pituitary somatotropes. It stimulates pulsatile GH release while having minimal effect on ACTH, cortisol, or prolactin - the first relatively selective GH secretagogue. It is not FDA-approved.
Evidence
Research Citations (8)
Every claim above traces back to a source you can check — here are 8 of them.
- Source
Ipamorelin, the first selective growth hormone secretagogue.
AnimalStudy1998 Key study 84/100Rated 84/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Ipamorelin for post-operative ileus (NCT00672074)
Registry2014 78/100Rated 78/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Pharmacokinetic-pharmacodynamic modeling of ipamorelin, a growth hormone releasing peptide, in human volunteers.
1999 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Ipamorelin, a new growth-hormone-releasing peptide, induces longitudinal bone growth in rats.
1999 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Prospective, randomized, controlled, proof-of-concept study of the Ghrelin mimetic ipamorelin for the management of postoperative ileus in bowel resection patients.
2014 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Ipamorelin
72/100Rated 72/100Source typeEstablished referenceIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Mechanism of ipamorelin-evoked insulin release from the pancreas of normal and diabetic rats.
95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Ipamorelin | C38H49N9O5 | CID 9831659 - PubChem
95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology →
Timeline
History & Milestones
Key moments in Ipamorelin’s research and regulatory timeline — sourced and dated.
- Ipamorelin, the first selective growth hormone secretagoguePublicationNov 1, 1998Related:Ipamorelin
News
Latest on Ipamorelin
Dated, sourced reporting that mentions Ipamorelin.
CNN investigation: wellness influencers drive boom in unapproved "research-use-only" peptides
A November 2025 CNN report documents how celebrities and wellness influencers are fueling mass consumer use of unapproved peptides like BPC-157, TB-500, ipamorelin, and CJC-1295, many sold with a "for research use only" label that lawyers and regulators describe as a loophole to evade FDA oversight. Health Secretary Robert F. Kennedy Jr. has vowed to end the agency's "war on peptides," while named sellers such as biohacker Gary Brecka market injectable vials for $350 to $600 each. Independent experts — including Scripps' Dr. Eric Topol and UC Davis biologist Paul Knoepfler — stress that none of these compounds have passed adequate clinical trials and that "research-grade" powders often contain contaminants. BPC-157 and TB-500 are also banned by international sports authorities as doping substances.
NuScience Peptides LLC
The FDA issued a warning letter to NuScience Peptides LLC for marketing unapproved injectable peptide drugs, including GLP-1/GLP-2/GLP-3 products and other peptides, on its website. The agency determined these products are unapproved new drugs under the FD&C Act. FDA warned that failure to correct the violations could lead to seizure or injunction.
NZR Anti-Doping Tribunal Decision PLAYER A
The New Zealand Rugby Anti-Doping Judicial Committee decision records Customs-intercepted mail containing, among other items, Biotech peptides, CJC-1295 (ipamorelin) 5/5mg, 3 x vials — a single combination vial naming both peptides, which the committee lists as a prohibited non-specified substance. The source labels the vial CJC-1295 (ipamorelin) without further DAC qualification; it is attributed to the with-DAC compound because unqualified CJC-1295 denotes the DAC form. A recreational athlete received a two-year sanction (backdated to provisional suspension on 9 August 2023) for importing and using the prohibited substances.
Certain Bulk Drug Substances for Use in Compounding that May Present Significant Safety Risks
FDA's running list of bulk drug substances that present significant safety risks in compounding names GHRP-2, GHRP-6, ipamorelin acetate, CJC-1295 and AOD-9604. GHRP-2 and GHRP-6 were added to the 503B risk list on September 29, 2023 over immunogenicity concerns, and FDA notes serious adverse events for CJC-1295 (increased heart rate, systemic vasodilatory reactions). The list confirms these peptides are treated by FDA as unsafe-for-compounding substances.
Tailor Made Compounding LLC
FDA warned Tailor Made Compounding LLC (Nicholasville, KY) after a 2018 inspection found it compounded drug products with bulk substances ineligible for 503A exemptions. The letter explicitly lists the compounded substances: Follistatin, GHRP-2, GHRP-6, AOD 9604, BPC 157, Bremelanotide (PT-141), Cerebrolysin, DSIP, Epitalon, GHK-Cu, Ipamorelin, LL-37, Melanotan II, Selank, Semax, and CJC 1295, among others. The firm was cited for insanitary aseptic processing (adulteration), unapproved new drugs, and misbranding, and removed GHRP-2 and GHRP-6 from its formulary in response.
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