Pepteca

Growth hormone axis

Ipamorelin

Growth hormone secretagogue · 5-aa · GHS

A selective growth-hormone secretagogue popular in 'GH' stacks — mostly early human and preclinical evidence, research-only in the UK.

Reference status

Editorial research · independent review pending · 3 claims graded

Editorial researchResearch-onlyEmerging · early human68% positive discussion

What it is

Ipamorelin stimulates the pituitary to release growth hormone, and is valued in the community for being relatively selective (less effect on cortisol and appetite than some alternatives). It is frequently paired with CJC-1295.

Human pharmacology data exists showing it does raise GH, but robust long-term outcome trials for the physique/anti-ageing uses it's marketed for are lacking.

The science, graded

What’s claimed — and how strong the evidence behind each claim actually is.

“Raises growth hormone levels”

Human pharmacology confirms a GH pulse; this specific mechanism is fairly well supported.

Claim-level citation mapping is in progress.

emerging
Emerging · early human

“Improves body composition / recovery / sleep”

Widely reported by users; not established in controlled outcome trials.

Claim-level citation mapping is in progress.

anecdotal
Anecdotal · community

“Anti-ageing effects”

A marketing leap. Raising GH is not the same as proven anti-ageing benefit.

Claim-level citation mapping is in progress.

hype
Hype · unproven

Legal and regulatory context

Separate summaries for Great Britain, the United States, and the European Union. These are preliminary research summaries awaiting independent regional review; they are not legal determinations or advice.

Great Britain

Preliminary researchResearch-only

Not a licensed medicine in the UK; sold as a research chemical. Banned in sport under WADA. No legal human-use supplement route.

This is preliminary regulatory research, not a reviewed legal determination or legal advice.

United States

Preliminary researchReview pending

Regional legal and regulatory review required before publication.

This is preliminary regulatory research, not a reviewed legal determination or legal advice.

European Union

Preliminary researchReview pending

Regional legal and regulatory review required before publication.

This is preliminary regulatory research, not a reviewed legal determination or legal advice.

What the community says

A staple of the 'GH peptide' conversation, usually stacked with CJC-1295. Users discuss timing (before bed) and pulsatility; critics question the risk/benefit versus limited data.

Share of positive discussion68%

Where they’re talking

  • r/PeptidesCJC + Ipamorelin is one of the most-asked-about stacks.
  • Bodybuilding forumsLong-running GH-secretagogue threads.

Appears in these stacks

CJC-1295 + Ipamorelin

Growth-hormone axis support

The classic growth-hormone secretagogue pairing: a GHRH analog plus a selective GH secretagogue, used to raise GH pulsatility. Endocrine effect is fairly supported; the downstream physique benefits are anecdotal.

References

  1. 1.Supply unlicensed medicinal products (specials) · MHRA
  2. 2.FDA's Concerns About Unapproved Drugs · U.S. Food and Drug Administration
  3. 3.Certain Bulk Drug Substances for Use in Compounding that May Present Significant Safety Risks · U.S. Food and Drug Administration
  4. 4.Buying medicines online · European Medicines Agency
Educational, not advice or endorsement. Educational reference only. Independent review is pending. Do not use this entry to make medical, purchasing, dosing, or treatment decisions.This editorial research entry preserves the existing material but has not yet passed independent scientific and regional regulatory review.