Supplement Scholar
Peptide

Ipamorelin (Ref)

Prescription drug or research compound. Use only under the care of a licensed prescriber. Information here is educational and not a recommendation to obtain or use it.

Ipamorelin (Ref). Selective GHRP-2 analog with minimal cortisol/prolactin effect.

How it works. Selective ghrelin receptor agonism on pituitary somatotrophs.

What the research supports. 1 graded claims. Strongest: Increases GH release without prolactin/cortisol rise (moderate).

How much to take. Typical dose: Research only.

Side effects and interactions. 1 medication interaction listed. Serious: Not FDA-approved for any indication.

Stacking. Pairs well with A high-quality multivitamin, Omega-3 (EPA/DHA).

Common forms. Available as Subcutaneous injection, Oral or sublingual lozenge, Nasal spray, Compounded topical.

Key studies. 8 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried Ipamorelin (Ref). Anecdotes are not medical advice.

Ipamorelin (Ref). Selective GHRP-2 analog with minimal cortisol/prolactin effect.

Molecular structureC38H49N9O5 · 711.9 g/mol

What it is

Selective GHRP-2 analog with minimal cortisol/prolactin effect.

Food sources

Synthetic peptide manufactured to pharmaceutical or research-grade puritySubcutaneous injection, sublingual, or oral preparation depending on bioavailabilityCompounded by a licensed pharmacy for clinical use

Goals

Growth Hormone SupportAthletic Performance

How it works

Selective ghrelin receptor agonism on pituitary somatotrophs.

Pathways

  • Selective ghrelin receptor agonism on pituitary somatotrophs

Effects

  • ↑GH release without prolactin/cortisol rise increases

What the research supports

Increases GH release without prolactin/cortisol risemoderate

Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.

Typical dose
Research only
TimingConsistent daily timing recommended; split larger doses if GI tolerance is a concern.
With foodEither with or without food.
Best formMost evidence is based on the subcutaneous injection form.

Side effects & interactions

Common side effects

  • Flush
  • Headache

Serious

  • Not FDA-approved for any indication

Medication interactions

Prescription medications (general)minor

Always disclose Ipamorelin (Ref) use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.

Check any supplement–medication combination with your pharmacist before starting.

Combines with

Pairs well

  • A high-quality multivitaminCovers micronutrient cofactors that support most supplement pathways.
  • Omega-3 (EPA/DHA)Foundational anti-inflammatory support that complements most regimens.

Common forms

  • Subcutaneous injection
  • Oral or sublingual lozenge
  • Nasal spray
  • Compounded topical

Key studies

8 studies cited in total.

PubMed: Ipamorelin (Ref) — Increases GH release without prolactin/cortisol rise ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Ipamorelin (Ref) and "Increases GH release without prolactin/cortisol rise". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Ipamorelin (Ref) — randomized controlled trial ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Ipamorelin (Ref) and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Ipamorelin (Ref) — meta-analysis ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Ipamorelin (Ref) and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

Discussion

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