Peptide Record

Ipamorelin · Endocrine · graded 2026-07-30

Growth hormone axis

This grade describes how much evidence exists for Ipamorelin against growth hormone axis — not whether it works, and not whether it is safe. It is computed from the inputs below by a fixed rule with no editorial adjustment.

Why this grade

Not hidden behind a control — showing the work is the point
Score decomposition — every input and its contribution
ComponentPointsScale
Best study type
The strongest design that produced evidence for this outcome, not the average design.
+5Human RCT 5 · Human observational 4 · Animal 2 · Preclinical 1 · None 0
Largest human sample
Largest single human study, not a pooled total across studies.
+1n ≥ 200 → 3 · 50–199 → 2 · < 50 → 1 · no human study → 0
Independent replication
Distinct research groups at the best study tier above, resolved through author and institution records.
+1≥ 3 groups → 3 · 2 → 2 · 1 → 1 · 0 → 0
Directional consistency
Share of studies at the best study tier reporting effect in the same direction — the same studies the replication row counts, not every record on the pair.
Measured over 1 stated direction across 1 study at the best tier. A ratio over three readings and the same ratio over ninety are the same number and are not the same evidence.
0≥ 90% concordant → 3 · ≥ 70% → 2 · ≥ 50% → 1 · below → 0 · fewer than 3 readings → 0
Bias risk
A deduction, never a bonus. A flag is counted only where a record states one; silence is not a pass and is not a flag.
0−1 per flag, floor −3: industry funding · no preregistration · no blinding
Total7Sum of the rows above, floored at 0.
What the bias row had to work with — how many of this pair’s records disclosed each field at all
FieldFlag statedStated the oppositeNot statedSilent
industry_funded
industry-funded deducts a point; declared non-commercial does not; silence does neither.
0022100%
preregistered
not preregistered deducts a point; preregistered does not; silence does neither.
0022100%
blinded
not blinded deducts a point; blinded does not; silence does neither.
0022100%

Grade A additionally requires a total of at least 11 and replication of at least 2: a high score carried by one research group is not replicated evidence, however large the trial.

Doses administered in studies

Sourced figures, not a protocol

Studied doses — not yet collected

Dose, route and n are extracted from study full text, and full text is paywalled for most records in this corpus. No dose has been extracted for this pair yet. Read that as an extraction gap, not as evidence that the studies below administered nothing.

This is a gap in our collection, not a finding about studied doses. Read it as “we have not looked yet”, never as “there is nothing there”. How extraction works and where it fails

Cited sources

22 records · ordered by source hierarchy

These are the records the grade above was computed from — the same set, by the same rule, read from one definition shared with the grader. Records attributed to an alias for a materially different product are not among them; where this pair has any, they are listed separately below.

  • HUMAN-TRIAL1
  • ANIMAL9
  • PRECLINICAL12
SourceStudyDesignnBias flagsDate
HUMAN-TRIALPharmacokinetic-pharmacodynamic modeling of ipamorelin, a growth hormone releasing peptide, in human volunteers.
PMID 10496658 · DOI 10.1023/a:1018955126402 · matched on "Ipamorelin"
human-rct40none stated1999-09-01
ANIMALMetabolism of growth hormone releasing peptides.
PMID 23101768 · DOI 10.1021/ac302034w · matched on "Ipamorelin"
animalnone stated2012-12-04
ANIMALGrowth hormone and growth hormone secretagogue effects on nitrogen balance and urea synthesis in steroid treated rats.
PMID 19231263 · DOI 10.1016/j.ghir.2009.01.001 · matched on "Ipamorelin"
animalnone stated2009-10-01
ANIMALSeabream ghrelin: cDNA cloning, genomic organization and promoter studies.
PMID 16648303 · DOI 10.1677/joe.1.06593 · matched on "Ipamorelin"
animalnone stated2006-05-01
ANIMALInfluence of chronic treatment with the growth hormone secretagogue Ipamorelin, in young female rats: somatotroph response in vitro.
PMID 12168778 · DOI 10.14670/hh-17.707 · matched on "Ipamorelin"
animalnone stated2002-01-01
ANIMALDo growth hormone-releasing peptides act as ghrelin secretagogues?
PMID 11322495 · DOI 10.1385/endo:14:1:133 · matched on "Ipamorelin"
animalnone stated2001-02-01
ANIMALMethylprednisolone does not inhibit the release of growth hormone after intravenous injection of a novel growth hormone secretagogue in rats.
PMID 10629165 · DOI 10.1054/ghir.1999.0128 · matched on "Ipamorelin"
animalnone stated1999-12-01
ANIMALIpamorelin, the first selective growth hormone secretagogue.
PMID 9849822 · DOI 10.1530/eje.0.1390552 · matched on "Ipamorelin"
animalnone stated1998-11-01
ANIMALPharmacokinetic evaluation of ipamorelin and other peptidyl growth hormone secretagogues with emphasis on nasal absorption.
PMID 9879640 · DOI 10.1080/004982598238976 · matched on "Ipamorelin"
animalnone stated1998-11-01
ANIMALNovel orally active growth hormone secretagogues.
PMID 9733496 · DOI 10.1021/jm980197u · matched on "Ipamorelin"
animalnone stated1998-09-10
PRECLINICALThe emerging landscape of performance-enhancing peptides modulating GH-IGF1 axis: bridging the gap between clinical evidence and patient self-administration.
PMID 42395176 · DOI 10.3389/fendo.2026.1822475 · matched on "Ipamorelin"
not determinednone stated2026-01-01
PRECLINICALGlycine-modified growth hormone secretagogues identified in seized doping material.
PMID 30136411 · DOI 10.1002/dta.2489 · matched on "Ipamorelin"
not determinednone stated2019-02-01
PRECLINICALPeptidomimetic growth hormone secretagogue derivatives for positron emission tomography imaging of the ghrelin receptor.
PMID 30282322 · DOI 10.1016/j.ejmech.2018.08.062 · matched on "Ipamorelin"
preclinicalnone stated2018-09-05
PRECLINICALAnalysis of new growth promoting black market products.
PMID 29864719 · DOI 10.1016/j.ghir.2018.05.001 · matched on "Ipamorelin"
not determinednone stated2018-08-01
PRECLINICALA high-throughput LC-MS/MS screen for GHRP in equine and human urine, featuring peptide derivatization for improved chromatography.
PMID 24574167 · DOI 10.1002/dta.1624 · matched on "Ipamorelin"
not determinednone stated2014-10-01
PRECLINICALDetermination of growth hormone releasing peptides (GHRP) and their major metabolites in human urine for doping controls by means of liquid chromatography mass spectrometry.
PMID 21298258 · DOI 10.1007/s00216-011-4702-3 · matched on "Ipamorelin"
not determinednone stated2011-08-01
PRECLINICALStimulation of growth hormone secretion from seabream pituitary cells in primary culture by growth hormone secretagogues is independent of growth hormone transcription.
PMID 15556068 · DOI 10.1016/j.cca.2004.09.008 · matched on "Ipamorelin"
preclinicalnone stated2004-10-01
PRECLINICALGrowth hormone (GH) hypersecretion and GH receptor resistance in streptozotocin diabetic mice in response to a GH secretagogue.
PMID 14630569 · DOI 10.1155/edr.2003.73 · matched on "Ipamorelin"
not determinednone stated2003-04-01
PRECLINICALThe influence of conformational restriction in the C-terminus of growth hormone secretagogues on their potency.
PMID 12204475 · DOI 10.1016/s0223-5234(02)01370-3 · matched on "Ipamorelin"
not determinednone stated2002-06-01
PRECLINICALHighly potent growth hormone secretagogues: hybrids of NN703 and ipamorelin.
PMID 11459660 · DOI 10.1016/s0960-894x(01)00345-6 · matched on "Ipamorelin"
not determinednone stated2001-07-23
PRECLINICALPharmacological characterisation of a new oral GH secretagogue, NN703.
PMID 10427162 · DOI 10.1530/eje.0.1410180 · matched on "Ipamorelin"
not determinednone stated1999-08-01
PRECLINICALA new series of highly potent growth hormone-releasing peptides derived from ipamorelin.
PMID 9733495 · DOI 10.1021/jm9801962 · matched on "Ipamorelin"
not determinednone stated1998-09-10

Rows are ordered by source hierarchy, so nothing below a regulatory filing appears above a human trial. A field marked uncertain is one where the extraction passes disagreed; it publishes as unknown rather than as a picked winner. A design reading “not determined” is a design nothing established, not a design of none. Explore the full corpus for Ipamorelin