Agonist
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GH SecretagogueSubcutaneous

GHRP-1

Also known as: Adamax · Growth Hormone Releasing Peptide 1

First peptide in the GHRP family — a synthetic heptapeptide ghrelin receptor agonist. Largely superseded by GHRP-2 and ipamorelin in research use due to less favorable selectivity, but historically important and occasionally found in research vendor catalogs.

At a glance

Half-life
30 minutes
Common route
Subcutaneous
Typical dose range
100–300mcg
Stability (reconstituted)
30days refrigerated

Best timing

Fasted, 2–3x daily. Largely supplanted by cleaner GHRPs — limited modern research interest.

Contraindications

  • Active cancer
  • Pituitary disease
  • Pregnancy
  • Cushing's or hypercortisolism

Watch symptoms

  • Hunger
  • Cortisol and prolactin elevation
  • Water retention
  • Facial flushing
  • Limited modern characterization compared to GHRP-2/ipamorelin

Citations

The primary literature.

  1. 01Growth hormone-releasing activity of GHRP-1 in adult and aged humansPubMed
  2. 02GHRP-1: a synthetic peptide stimulator of growth hormone secretionPubMed
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