Evidence-based·Last reviewed May 30, 2026·How we grade evidence

Ipamorelin

PeptideResearch peptide

Useful mainly for not established — investigational.

Research compound — not an approved drug or dietary supplement

This compound is sold for research and is not FDA-approved for human use or as a dietary supplement. Human evidence is limited; purity and dosing of consumer products are unverified. The data below is an evidence review for education only — talk to a clinician before considering it.

Quick decision guide

May help most

Not established — investigational

Watch out for

Unapproved GH secretagogue with unknown long-term safety and unregulated research-grade purity

What is it

Ipamorelin is a synthetic pentapeptide that acts as a selective growth hormone secretagogue, mimicking ghrelin to stimulate the pituitary to release growth hormone. It is proposed to raise GH and IGF-1 with relatively little effect on cortisol or prolactin compared with some other secretagogues. It was investigated pharmaceutically but development was discontinued; it is not FDA-approved for any use, and human data are limited largely to small or early-phase studies, with no established long-term safety or efficacy profile. It is not a dietary supplement and is sold only 'for research use only.'

Is it worth it for you?

Use this as a quick fit check, not a diagnosis.

Probably skip if…

You expect an approved therapy — pharmaceutical development was discontinued and it is not FDA-approved
You would buy from 'research use only' vendors with no purity, sterility, or dosing oversight
You are not prepared for unknown long-term effects of chronically raising GH/IGF-1
You are uncomfortable with self-injection risks (infection, contamination)
You compete in sport — GH secretagogues are prohibited under WADA rules

Safety

Know the common side effects, key cautions, and who should avoid it.

Common side effects

Reported in limited settings: headache, flushing, transient injection-site reactions, increased appetite (ghrelin-mimetic effect)

Serious risks

  • Unregulated purity, sterility, and dosing of research-grade product

  • Unknown long-term effects of sustained GH/IGF-1 elevation, including theoretical risks for insulin resistance and growth of existing tumors

  • Injection-related infection and contamination risk

  • No clinical monitoring of hormone levels or glucose

Who should avoid it

  • Anyone without direct medical supervision
  • Pregnancy and breastfeeding
  • People with cancer or a history of cancer
  • People with diabetes or impaired glucose tolerance (without supervision)
  • Competitive athletes subject to anti-doping rules

Pregnancy & breastfeeding

Avoid — no safety data.

Choosing a product

What to look for on the label — and what to be skeptical of.

Be skeptical of…

'Proven' muscle-building, fat-loss, or anti-aging claims in humans
Vendors selling 'for research use only' product for human injection
Implying it is a safe or approved alternative to prescription growth hormone

Track Ipamorelin with Pilora

Set up dose reminders, check interactions, and join the community in the Pilora iPhone app.

Coming to App Store
Evidence-based·Last reviewed May 30, 2026·Evidence current as of May 30, 2026·How we grade evidence

Disclaimer: This compound is not approved by the FDA for human use and is not a dietary supplement. This page is an educational review of available research — much of it preclinical or early-stage — not a recommendation to use it. Consumer product quality is unregulated. Consult a qualified clinician.