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Peptides/Growth Hormone

Ipamorelin

Grade B

Frequently combined with CJC-1295 to mimic physiological GH pulsatility. Cleaner side-effect profile than GHRP-2/6.

Mechanism of Action

Pentapeptide ghrelin receptor (GHS-R1a) agonist that selectively stimulates pituitary GH release without significant effects on cortisol, prolactin, or appetite — unlike earlier secretagogues.

Typical Protocol

Dose
200–300 mcg
Frequency
1–3× daily
Duration
8–12 week cycles
Timing
Pre-bed and/or pre-training, fasted
Route
Subcutaneous injection
Half-life
~2 hours

Educational reference only — not medical advice.

Reported Benefits

  • Selective GH pulse without cortisol elevation
  • Improved recovery and sleep quality
  • Minimal appetite stimulation

Side Effects

  • Mild head rush
  • Transient flushing
  • Injection site reaction

Contraindications

  • Active malignancy
  • Pregnancy
  • Uncontrolled diabetes

Known Interactions

GHRH analogues (CJC-1295)Synergistic GH release.
Somatostatin analoguesAntagonistic — avoid combination.

References

  1. [1]Ipamorelin, the first selective growth hormone secretagogue European Journal of Endocrinology, 1998

Comparison vs Alternatives

All Peptides →
AttributeIpamorelinThis pageCJC-1295Semaglutide
EvidenceGrade BGrade BGrade A
CategoryGrowth HormoneGrowth HormoneMetabolic
Best forSelective GH secretagogueLong-acting GHRH analogueGLP-1 receptor agonist
Typical dose200–300 mcg1–2 mg (with DAC)0.25 → 2.4 mg
Frequency1–3× dailyWeeklyWeekly
RouteSubcutaneous injectionSubcutaneous injectionSubcutaneous weekly (oral form available)
Legal statusResearch chemical. Not approved for human therapeutic use.Research chemical. Not approved for human therapeutic use.FDA-approved (Ozempic, Wegovy). Prescription required.
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