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Growth-hormone axis

Hexarelin

Also known as: Examorelin

One of the most potent GH-releasing peptides, though tolerance can build with continued use.

Hexarelin at a glance

NameHexarelin
Also known asExamorelin
CategoryGrowth-hormone axis
TypePeptide
SequenceHexapeptide GH secretagogue
Typical dose~100 mcg
Frequency1–2× daily, often cycled
RouteSubcutaneous injection
Half-lifeShort (~30–70 minutes).

Overview

Hexarelin is among the strongest GHRPs for acutely raising growth hormone. Its potency comes with a catch — the GH response can diminish (desensitize) with frequent dosing — so it is often used more conservatively or cycled. It has also been studied for effects on the heart.

How it’s thought to work

  • Potently activates the GH-secretagogue receptor for a large GH pulse.
  • Receptors can desensitize with frequent, high dosing.

Researched uses

  • Strong GH release research
  • Cardiac and recovery investigation

Commonly cited protocol

Typical dose~100 mcg
Frequency1–2× daily, often cycled
RouteSubcutaneous injection
NotesLower frequency helps limit desensitization.

Reconstitution

Often a 5 mg vial. 5 mg with 2 mL water = 2.5 mg/mL, so 100 mcg = 4 units on a U-100 syringe.

Hexarelin dosage calculator

The calculator below is pre-filled with Hexarelin’s commonly cited vial size and dose. Adjust the vial amount, bacteriostatic water, or dose to match your own vial — it will show the exact insulin-syringe units to draw, the concentration, and how many doses the vial holds.

mg
100 mcg = 0.1 mg
mL
How much water you add is your choice — it doesn’t change your dose, only how many units you draw. Common:
Draw to
10 units
= 0.1 mL on a 1 mL (100 units) syringe
010203040506070809010010 ufill to the 10 u line on a 100-unit barrel
Concentration
1 mg/mL
Per unit
10 mcg/u
Doses per vial
50 × 100mcg
Volume
0.1 mL
📋 In plain English

Add 5 mL of bacteriostatic water to your 5 mg vial. That gives you about 50 doses of 100 mcg. For each dose, draw 10 units into a 100-unit insulin syringe.

See the full Hexarelin dosing chart (units for every dose & water amount), or open the full peptide calculator →

Cautions

  • Not approved for human use.
  • GH response can fade with overuse.
  • Possible cortisol/prolactin effects; caution with active cancer.

Hexarelin FAQ

What is Hexarelin?

One of the most potent GH-releasing peptides, though tolerance can build with continued use.

How does Hexarelin work?

Potently activates the GH-secretagogue receptor for a large GH pulse. Receptors can desensitize with frequent, high dosing.

What is Hexarelin used for?

Strong GH release research; Cardiac and recovery investigation.

What is a typical Hexarelin dose?

~100 mcg, 1–2× daily, often cycled, Subcutaneous injection. This is a commonly cited figure for context only, not medical advice.

How do you reconstitute Hexarelin?

Often a 5 mg vial. 5 mg with 2 mL water = 2.5 mg/mL, so 100 mcg = 4 units on a U-100 syringe.

What is the half-life of Hexarelin?

Short (~30–70 minutes).

Related growth-hormone axis peptides

⚠️ Educational reference only — not medical advice. These compounds are largely research chemicals not approved for human use in most countries. Nothing here is a recommendation to obtain or administer any substance. Consult a qualified clinician.