Growth hormone secretagogue

Ipamorelin

Selective GH secretagogue with minimal effect on cortisol or prolactin. Reported for sleep and recovery.

Preclinical only · t½ ~2 h · 200–300 mcg, 1–3× daily

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CPreclinical onlyPreclinicalGrowth hormone secretagogue

Selective GH secretagogue with minimal effect on cortisol or prolactin. Reported for sleep and recovery.

Scientific Consensus Engine

Evidence Intelligence Score

Heuristic — no indexed evidence yet
3.9/ 10
Overall confidence
Insufficient
Outlook
Emerging
Evidence maturity
  1. Preclinical← current
  2. Pilot human
  3. RCT
  4. Multi-RCT
  5. Meta-analysis

Confidence aggregates eight dimensions of evidence — human data, safety maturity, mechanism, clinical readiness, momentum, consistency, long-term follow-up, and translational signal. It is a measure of what is known, not a recommendation. Methodology.

Eight-dimension breakdown
  1. Human evidence
    Weight of RCT and observational data
    3.8
  2. Safety maturity
    Follow-up depth and adverse-event signal
    2.6
  3. Mechanism confidence
    Pathway specificity and clarity
    6.2
  4. Clinical readiness
    Distance to physician-prescribable use
    2.8
  5. Research momentum
    Recency of indexed clinical evidence
    5.0
  6. Study consistency
    Effect direction across cohorts
    4.4
  7. Long-term data
    Follow-up beyond initial trial windows
    1.8
  8. Translational confidence
    Animal → human signal preservation
    4.4
Strongest supported claim

Mechanistic and preclinical evidence is suggestive; controlled human trials are not yet on the index.

Weakest / unclear

Translational confidence is limited until pre-registered human trials reproduce the preclinical signal.

Major unknowns

Interactions outside listed contraindications, long-term safety, and effect heterogeneity across age and sex are not fully resolved.

Scientific outlook

Outlook: speculative. A grade upgrade requires controlled human evidence, not additional preclinical confirmation.

Reported outcomes · graded
Recovery & sleep
Dgrade
2.5
Mechanism
Ghrelin (GHS-R1a) receptor agonist; pulses endogenous GH release.
Clinical evidence · 1 study indexed

Growth hormone elevation

1 study
  • Raun K, Hansen BS, Johansen NL, et al.

    Single IV bolus of ipamorelin (0.5-80 mcg/kg) dose-dependently increased serum GH in healthy volunteers without significant ACTH/cortisol/prolactin elevation. Primarily preclinical paper with small human pilot.

    Preclinicaln=81998unreviewed
    weak
Observed research protocols · 1 regimen

Growth hormone elevation

1 regimen
Clinical trialsource ↗

Selectivity advantage vs other GHS; long-term safety not established.

Single-dose study only; no chronic human dosing trial published.

These are observed research regimens drawn from approved labels, clinical trials, or preclinical literature — not dosing recommendations. Suggestive, never prescriptive.

What we don't know yet
  • Long-term safety beyond reported study durations.
  • Effect size in populations under-represented in the cited trials.
  • Interactions with concomitant medications outside listed contraindications.

We surface uncertainty next to every claim. Suggestive, never prescriptive — discuss with a clinician.

Editorial team
Independent · No affiliate revenue
Reviewed quarterly
Brands carrying this peptide

2 brands across three tiers.

Compounded (US 503A)

1 brand

Patient-specific preparations from US 503A compounding pharmacies. Require a valid prescription, not FDA-approved as finished drugs. Verify the pharmacy's licence and the active ingredient's status on the FDA 503A bulks list.

Research-use only

1 brand

Sold by chemical suppliers labelled 'for laboratory research only — not for human consumption'. No pharmaceutical-grade QC, no medical oversight. Listed for transparency.