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Peptides/Growth Hormone

CJC-1295

Grade B

Used in research and off-label protocols to amplify endogenous growth hormone pulses. Often paired with a ghrelin mimetic like Ipamorelin for synergistic GH release.

Mechanism of Action

Modified growth hormone-releasing hormone (GHRH) analogue. With DAC (drug affinity complex), binds albumin to extend half-life, producing sustained pulsatile GH and IGF-1 elevation.

Typical Protocol

Dose
1–2 mg (with DAC)
Frequency
Weekly
Duration
8–12 week cycles
Timing
Evening, fasted
Route
Subcutaneous injection
Half-life
~8 days (with DAC); ~30 min (without DAC)

Educational reference only — not medical advice.

Reported Benefits

  • Sustained elevation of GH and IGF-1
  • Improved sleep depth (slow-wave sleep)
  • Reported body composition improvements

Side Effects

  • Water retention
  • Numbness/tingling
  • Elevated fasting glucose
  • Injection site reactions

Contraindications

  • Active malignancy
  • Diabetic retinopathy
  • Pregnancy

Known Interactions

InsulinGH antagonizes insulin; monitor glucose.
CorticosteroidsBlunt GH response.

References

  1. [1]Sustained GH and IGF-1 responses to CJC-1295 in healthy adults Journal of Clinical Endocrinology & Metabolism, 2006

Comparison vs Alternatives

All Peptides →
AttributeCJC-1295This pageIpamorelinSemaglutide
EvidenceGrade BGrade BGrade A
CategoryGrowth HormoneGrowth HormoneMetabolic
Best forLong-acting GHRH analogueSelective GH secretagogueGLP-1 receptor agonist
Typical dose1–2 mg (with DAC)200–300 mcg0.25 → 2.4 mg
FrequencyWeekly1–3× dailyWeekly
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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