Peptide GuideGHRP-2

The Peptide Guide

All muscle & performance peptides

GHRP-2

Muscle growthSleep

GHRP-2 is a growth-hormone releasing peptide that pulses GH from the pituitary. It is stronger than ipamorelin and can raise hunger, cortisol, and prolactin more.

What does it do?

Activates the ghrelin receptor and triggers a GH pulse from the pituitary
Supports recovery, sleep depth, and downstream IGF-1 signaling
Can raise appetite, cortisol, and prolactin more than ipamorelin
Used for GH-pulse support, not direct fat burning
Stacks with a GHRH analog because the two paths add together
Needs a fasted window so insulin does not blunt the pulse

How does it work?

Hits the ghrelin receptor and tells the pituitary to release GH
Creates a short pulse rather than a flat hormone replacement
Can also bump cortisol and prolactin
Hunger is present but usually less than GHRP-6
Food near the shot can blunt the GH pulse
Pairs with a GHRH analog because the two paths add together

What to expect?

A flush or warm wave can hit within minutes
Hunger often follows the shot
Sleep can feel deeper within a couple of weeks
An empty stomach makes the pulse cleaner
Water and skin oil can pick up more than with ipamorelin

How it's typically administered

Sub-Q injectionSubcutaneous injectionbest timed morning, post-training, or before bed, fasted

How it's typically dosed

Most common dose100–200 mcg
Frequency2–3x daily, fasted
Cycle duration8–12 weeks

BackAll muscle & performance peptides Full peptide list