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 works best when used to mimic the body's natural pulsatile GH release pattern: typically 1–3 doses per day at strategic times (fasted, pre-workout, pre-sleep).

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 Protocol

Phase	Dose	Frequency	Duration
Standard	200–300mcg	1–2x daily	8–12 weeks
CJC/Ipa Stack	100–200mcg Ipa	With CJC-1295 dose	12–16 weeks
Sleep Protocol	200mcg	Before sleep (fasted)	Ongoing

Always start at the lowest effective dose and titrate up gradually.

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 1–2

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

Week 3–6

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

Month 2–3

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

Month 3+

Full benefits realized. Most users cycle 12 weeks on, 4 weeks off. Long-term users may use indefinitely at lower doses.

Notes from Ho Chi Minh City

Ipamorelin solo without the CJC partner is underwhelming, and that's the most common mistake I see in HCMC peptide forums. People buy a 5mg vial, run 200mcg before bed, expect dramatic effects, get nothing they can identify after 4 weeks, and conclude it doesn't work. The reality is that Ipamorelin is the trigger and CJC-1295 no-DAC is the amplifier; running Ipamorelin alone is like flicking a light switch with no bulb in the socket. When stacked properly at 100mcg of each pre-sleep, fasted, the recovery effect on jiu-jitsu morning soreness is consistent and the skin changes around week 6 to 8 are noticeable enough that gym buddies start asking what I changed. I run 12-week cycles with a 4-week wash.

FAQ

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

A: The CJC-1295/Ipamorelin combination is far superior to either alone. CJC-1295 (no DAC) extends the duration of the GH pulse while Ipamorelin initiates it. Together they produce a more sustained, higher GH release. See the CJC/Ipamorelin Protocol.

Q: When is the best time to inject Ipamorelin?

A: Before sleep is optimal, GH naturally peaks during deep sleep and adding Ipamorelin amplifies this. Many users also dose before workouts. Always inject fasted (nothing for 2+ hours) as insulin blunts GH release.

Q: How long should an Ipamorelin cycle be?

A: 8–16 weeks on, 4–8 weeks off is typical. The off period prevents desensitization of the pituitary. Some experienced users run longer cycles or use indefinitely at lower doses. 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.