Ipamorelin
Selective GH secretagogue: without cortisol elevation
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WHAT IS IPAMORELIN?
Detailed overview
Ipamorelin is a synthetic pentapeptide GH secretagogue (GHS) that selectively binds the ghrelin receptor (GHSR-1a). The first GHS to induce GH secretion without raising cortisol or prolactin, distinguishing it from earlier GHRPs (e.g. GHRP-6). Commonly stacked with CJC-1295 for synergistic GH release: the GHRH analog amplifies the GH pulse and ipamorelin increases pulse amplitude.
Type
Pentapeptide GHSR agonist
Structure
Aib-His-D-2-Nal-D-Phe-Lys-NH₂
Molecular weight
~712 Da
Target area
GH release (selective)
Storage
2–8°C (reconstituted)
Stability
25–30 days (reconstituted)
Growth hormone release
The peptide acts on pituitary GHRH or GHS receptors, producing a physiological, pulsatile GH release, unlike synthetic rHGH, which keeps levels flat and leads to desensitization. IGF-1 rises into the upper-normal range, driving recovery, muscle protein synthesis, lipolysis and skin quality. Deep-sleep phases lengthen; collagen and bone-matrix synthesis activate. The effect is reversible and does not suppress the endogenous GH axis.
Data console
Lab data
Research indications
Investigated uses and mechanisms
Growth hormone release
Mimics physiological pulsatile GH secretion; IGF-1 rise.
Recovery & body comp
Muscle mass gain, fat reduction, post-workout recovery.
Sleep quality
Deep-sleep (N3) phases lengthen.
Reconstitution
How to prepare, step by step
Important
Sterile technique required. Use bacteriostatic water (BAC) only. Never distilled or tap water.
- 01
Remove the vial and bacteriostatic water (BAC) from refrigeration; let them reach room temp for 5 minutes.
- 02
Wipe both vial stoppers with an alcohol swab.
- 03
Draw 2 ml of BAC water into a sterile syringe (typical for the 2 mg vial).
- 04
Inject slowly down the side of the vial, do NOT spray directly onto the peptide powder.
- 05
Swirl gently in a circular motion until dissolved (~30 s), do not shake.
- 06
Wait for the solution to become clear. If sediment or discoloration appears, discard it.
- 07
Label the vial with reconstitution date and concentration.
- 08
Store at 2–8 °C, protected from light. Inspect visually before each use.
Quality indicators
How to recognize a pure peptide
Purity markers
4White / off-white powder
Typical appearance of sterile lyophilized peptide.
Comes with COA (Certificate of Analysis)
Independent lab analysis, ≥98% purity.
Intact, sealed vial
Rubber stopper + aluminum crimp intact, ensuring sterility.
Dissolves clear
Clear solution after reconstitution, no sediment.
Use caution
1Storage temperature
Extended room-temp exposure may reduce potency.
Do not use
2Discoloration / sediment
Yellow, cloudy or particulate solution, indicates degradation, do not use.
Damaged packaging
Cracked vial or loose cap, sterility compromised, discard.
Interactions & stacks
What to combine and what to avoid
CJC-1295
SynergisticGHRH analog: sustained growth hormone stimulation
Sermorelin
SynergisticGHRH(1-29) analog: physiological GH restoration
Ipamorelin
SynergisticGHRH + GHRP, classic pulsatile GH stack.
Vitamin C / Zinc / B-complex
SynergisticSupports collagen synthesis and antioxidant capacity.
Caffeine
Requires timingCompatible with morning dosing; avoid late-day stacking.
Insulin
Use cautionContinuous glucose monitoring required.
NSAIDs (Ibuprofen, ASA)
Use cautionLong-term concurrent use may blunt regenerative effects.
Alcohol
AvoidReduces recovery and increases side-effect risk.
Safety
Side effects, stop signs, contraindications
Side effects · 5
- Injection-site redness, itching
- Water retention, mild edema
- Wrist / joint stiffness (carpal-tunnel-like)
- Transient blood-glucose increase
- Mild prolactin / cortisol increase (some peptides)
Contraindications · 5
- Pregnancy and breastfeeding
- Active malignancy
- Known allergy to the peptide or its components
- Severe hepatic or renal impairment (medical consultation required)
- Age under 18
Related Peptides
Same therapeutic category
Studies
Related research and clinical findings
Ipamorelin, the first selective GH secretagogue
Raun K, Hansen BS, Johansen NL, et al.
Selective GH secretion without cortisol or prolactin rise, distinguishes it from earlier GHSs.
The Safety and Efficacy of Growth Hormone Secretagogues.
Sigalos JT, Pastuszak AW
Review of efficacy and safety profile of ipamorelin and related GHS compounds based on clinical data.
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The information here is strictly for educational and scientific purposes. It does not replace medical advice or clinical consultation, and it does not encourage illegal substance or pharmaceutical use. Data is sourced. When in doubt, consult your doctor.