Ipamorelin

The cleanest growth hormone secretagogue. Targeted GH pulse with no cortisol or prolactin side effects.

Last updated: May 2026

What is Ipamorelin?

Ipamorelin is a selective growth hormone secretagogue (GHS) and ghrelin receptor agonist that stimulates the pituitary gland to release growth hormone in a pulsatile, natural pattern. Unlike earlier GH-releasing peptides (GHRP-2, GHRP-6), Ipamorelin has extremely high selectivity, it triggers GH release without causing spikes in cortisol, prolactin, ACTH, or LH. Browse the full peptide library for related GH compounds.

This selectivity makes Ipamorelin one of the most popular GH peptides for long-term use. For visceral fat reduction specifically, consider tesamorelin which has FDA approval for that indication. Users can experience the benefits of elevated GH (improved body composition, recovery, sleep quality, and skin) without the hormonal side effects that complicate other GH-releasing compounds.

Ipamorelin is most commonly used in the CJC-1295 (no DAC)/Ipamorelin stack, which is considered the gold-standard GH protocol in the peptide community. CJC-1295 extends the GH pulse while Ipamorelin initiates it, creating a synergistic effect that more closely mimics the body's natural GH rhythm.

How It Works

Ghrelin Receptor Agonism: Ipamorelin binds to the GHSR (growth hormone secretagogue receptor), also known as the ghrelin receptor, in the pituitary gland, triggering a burst of GH release.

Selective Action: Unlike GHRP-2 and GHRP-6, Ipamorelin does not significantly activate pathways for cortisol, prolactin, or other hormones, producing a clean GH pulse.

Pulsatile Release: Ipamorelin is designed to mimic the body's natural pulsatile GH release rather than a flat elevation, which is the pattern the research describes. How often and when it is used is a prescriber's decision, not a fixed schedule.

Benefits

Increased lean muscle mass and improved body composition
Accelerated fat loss (particularly when combined with diet)
Improved sleep quality and recovery
Faster healing of injuries and connective tissue
Improved skin quality and reduced wrinkles
Increased bone mineral density
Clean GH pulse: no cortisol or prolactin elevation

Dosing Described in Research and Labels

Phase	Dose	Frequency	Duration
GH secretagogue (research)	No established human dose	Subcutaneous (research)	Not established

These figures summarise what published research and approved labels describe. They are educational, not a recommendation or a personal protocol. Any dose, schedule, or decision to use a compound belongs with a licensed prescriber.

Side Effects

Common

⚠Water retention (mild, especially early on)
⚠Tingling in hands or feet (common, usually temporary)
⚠Mild headache in first week
⚠Increased hunger (mild compared to GHRP-6)

Rare

•Injection site reaction
•Temporary numbness
•Lightheadedness if taken too quickly

Who Should NOT Use Ipamorelin

✕Active cancer (GH can stimulate growth)
✕Diabetic retinopathy
✕Pregnancy or breastfeeding
✕Severe hypothyroidism (optimize thyroid first)

What to Expect

Week 1 to 2

Improved sleep quality often noticed first. Some water retention. Increased hunger (mild).

Week 3 to 6

Recovery noticeably faster. Skin quality improving. Body composition beginning to shift (more lean, less fat).

Month 2 to 3

Significant lean mass gains, especially when combined with resistance training. Fat loss accelerates.

Month 3+

Full benefits realized. Cycled rather than continuous use is the pattern most often described; cycle length and whether to continue are prescriber decisions, not a fixed forum number.

Notes from Ho Chi Minh City

Ipamorelin on its own is underwhelming, and treating it as a standalone is the most common mistake aired in HCMC peptide forums: run solo, people report little they can identify after a month and conclude it does not work. The mechanism explains why, Ipamorelin is the GH-release trigger and CJC-1295 no-DAC is the amplifier, so the pairing is what the recovery and skin-quality reports actually come from, timed around pre-sleep and a fasted window. Cycled use rather than continuous is the norm. The specific doses, the stack ratio, and cycle length are decisions for a licensed prescriber, not a fixed number from a forum thread.

FAQ

Q: Should I use Ipamorelin alone or with CJC-1295?

A: Mechanistically the two are complementary, which is why the CJC-1295/Ipamorelin pairing is the one most discussed: CJC-1295 (no DAC) extends the duration of the GH pulse while Ipamorelin initiates it, so together they produce a more sustained release than either alone. Whether to combine them is a prescriber decision. See the CJC/Ipamorelin Protocol.

Q: When is the best time to inject Ipamorelin?

A: The physiology gives the timing logic the research describes: GH pulses naturally during deep sleep, and insulin blunts GH release, so a fasted state is where the signal is cleanest. That is mechanism, not a schedule to self-administer. When and whether to use it is a prescriber decision.

Q: How long should an Ipamorelin cycle be?

A: Cycling rather than continuous use is the pattern most discussed, the rationale being that pulsed exposure avoids desensitizing the pituitary. The specific on and off length is a prescriber decision, not a fixed forum number. Source from the community-verified supplier list.

Where to Get Ipamorelin in Vietnam

See our community-verified supplier list with COA verification and cold-chain shipping to Vietnam.

View Supply Index

Related Peptides

CJC-1295 (no DAC)CJC-1295 (with DAC)Tesamorelin MOTS-c

Research & Sources

Ipamorelin, the first selective growth hormone secretagogue · Raun K, Hansen BS, Johansen NL, et al. · European Journal of Endocrinology (1998) PMID: 9849822
Original characterization of ipamorelin as a selective GHS without cortisol, prolactin, or ACTH activation.
Synergy between GHRH and a GH-releasing peptide for stimulation of GH release in humans · Bowers CY, Granda R, Mohan S, Kuipers J, Baylink D, Veldhuis JD · Journal of Clinical Endocrinology and Metabolism (2004) PMID: 15292313
Foundational study supporting the synergistic GH release of GHS plus GHRH analogue stacks like ipamorelin plus CJC-1295.
Effects of growth hormone secretagogues on body composition and bone mineral density · Sigalos JT, Pastuszak AW · Sexual Medicine Reviews (2018) PMID: 28526632
Reviews body composition and recovery outcomes from GH secretagogue protocols including ipamorelin.
Ipamorelin: a selective ghrelin receptor agonist · Andersen NB, Malmlöf K, Johansen PB, et al. · Endocrinology (2001) PMID: 11606475
Pharmacological selectivity profile clarifying why ipamorelin lacks the appetite and cortisol effects of GHRP-6.

Important Disclaimer

Educational content only. Not medical advice. Peptides discussed on this page are not approved by Vietnam’s Ministry of Health (Bộ Y Tế) or the Drug Administration of Vietnam (DAV) for the indications described. Research peptides are not stocked at Long Châu, Pharmacity, or any retail pharmacy in Vietnam. Consult a licensed physician before any use.