Hexarelin

Growth Hormone / IGF-1 Axis
Phase 2
Investigational

Hexarelin is a synthetic six-amino-acid peptide and one of the most potent compounds that trigger growth hormone release. Beyond its growth hormone effects, research also shows heart-protective properties that work independently of growth hormone.

Last updated February 22, 2026
155 PubMed-Verified Studies
Moderate
Research-Driven Dosage Reports
RouteSubcutaneous (SC)
Dose100–200 mcg
Frequency1–3× daily
Duration4–8 weeks (cycling recommended)

Based on published research literature.

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Overview of Hexarelin

Most potently activates ghrelin receptors for maximum GH release, with additional cardioprotective effects independent of growth hormone.

Growth hormone axis

Strong agonist of GHS-R1a receptors on pituitary somatotrophs, triggering robust calcium signaling and GH secretion.

Considered most potent GHRP for GH release, dose-dependent increases approach maximum pituitary output capacity.

High potency may lead to receptor desensitization with continuous use, so cycling protocols often recommended.

Cardiovascular

Activates CD36 scavenger receptors on cardiac tissue (independent of GH release), showing cardioprotective effects in ischemia models.

Hormonal effects

Can elevate cortisol and prolactin more than selective secretagogues like Ipamorelin, resulting in a less selective hormonal profile

Read Full Hexarelin Dosage Guide

Research-backed dosing protocols, timing, and administration details

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Growth Hormone / IGF-1 Axis