GHRP-2
A synthetic ghrelin mimetic that prompts your own pituitary to release a pulse of growth hormone. People run it for lean muscle, recovery, and sleep, often paired with CJC-1295 to amplify each pulse.
Where to buy GHRP-2, cheapest first.
Prices from 3 vendors across the market. We link straight to each vendor’s product page and grade vendors on public lab data, so you’re not just chasing the lowest number.
What GHRP-2 actually does.
The simple version first, then a little more for the curious. No biochem degree required.
It mimics ghrelin, your hunger hormone, to switch on your body's own growth hormone release, giving a sharp natural pulse rather than injecting GH directly.
How it works
GHRP-2 binds the growth hormone secretagogue receptor (GHS-R1a), the same receptor ghrelin uses. That triggers calcium signaling in the pituitary and pushes out a burst of stored growth hormone, while also nudging the brain to release more GHRH.
Where it acts
It works on the pituitary gland and the hypothalamus. Because it prompts your own GH rather than replacing it, the release stays pulsatile, the natural on-off rhythm the body uses, instead of a flat dose of synthetic GH.
What people notice
Users report deeper sleep, a bump in appetite, better recovery, and slow gains in lean tissue over a cycle. GHRP-2 is a strong GH releaser, so the appetite and sleep effects tend to show up first.
Honest caveat: most human data on GHRP-2 comes from short clinical studies of GH release and appetite, not long-term muscle or anti-aging trials. The lean-mass and recovery claims are largely community reports and extrapolation. It is not an approved medicine and is sold strictly for research use only. None of this is medical advice, talk to a licensed provider before starting anything.
How to take it.
GHRP-2 is an injection, given subcutaneously into fat with a tiny insulin needle. It has a short half-life and works on an empty stomach, so people split it into 2 to 3 small daily shots. The routine is below; for cycling and stacking, see the full guide.
Reconstitute the vial
Add bacteriostatic water down the side of the vial (a 5mg vial + 2mL = 2.5mg/mL, which is 2500mcg/mL). Swirl gently until clear, don't shake.
Draw your dose
On a U-100 insulin syringe, pull to your unit mark. 200mcg at 2500mcg/mL is 8 units (0.08mL). Use the calculator if you're unsure.
Pinch and inject
Swab with alcohol, pinch a bit of fat, insert at 45–90°, push slowly. Dose on an empty stomach and wait about 20 minutes before eating, since food and fat blunt the GH pulse.
Rotate your sites
Move to a different spot each time so no area gets sore or lumpy. Keep the vial in the fridge between doses.
The easiest spots are the belly (about 2 inches either side of the navel), the love handles, the front of the thigh, and the back of the upper arms. Rotate every injection.
Don't do the math, let the calculator do it.
This is GHRP-2's typical setup, already worked out. Change any value and the draw updates instantly.
Typical GHRP-2 dose: about 100 to 300 mcg per shot, taken 2 to 3 times a day on an empty stomach, most commonly 200 mcg before bed and after training. It's run in cycles of roughly 8 to 12 weeks, not continuously.
How to cycle GHRP-2.
How long people run GHRP-2, when to take a break, and the honest reasoning behind it.
Run in cycles, not continuously.
A cycle just means a defined run of time on the peptide, followed by a break. For GHRP-2 the common pattern is a block of roughly 8 to 12 weeks, then time off, rather than running it indefinitely.
Why not just run it forever? Two reasons. The long-term human safety data does not exist yet, and the ghrelin receptor can desensitize over time, so the GH response tends to fade if you never take a break. A focused block followed by a rest is the widely followed approach.
- Hold the schedule through your block, the same per-shot dose at roughly the same times each day.
- Keep doses on the empty stomach, since eating around the shot blunts the pulse you are paying for.
- Take a real break after a cycle before considering another, which also helps the receptor stay responsive. If you have questions, that is a conversation for a licensed provider.
Want the full picture, on and off periods, the washout, stacking, and keeping your results? Read how peptide cycling works →
What's actually in the vial.
We haven't yet found a vendor publishing a lab certificate for GHRP-2 that we can link to directly. We don't post purity numbers we can't source. When a vendor publishes a real GHRP-2 COA, it'll show up here.
What people pair it with.
GHRP-2 is usually run with a GHRH peptide, which raises the size of each growth hormone pulse while GHRP-2 sets it off. These are the pairings people reach for.
GH amplifier
The classic growth hormone pairing. GHRP-2 triggers the pulse and CJC-1295 (often the no-DAC Mod GRF version) raises how much GH each pulse releases. Together they push a bigger, cleaner spike than either alone.
View stack →Layered secretagogues
Some people layer a stronger releaser (GHRP-2) with a cleaner one (Ipamorelin) early in a cycle, then taper toward Ipamorelin alone to limit cortisol and appetite. A way to chase the pulse without as much hunger.
View stack →Recomposition
A recovery-leaning recomposition stack. The GHRP-2 and CJC-1295 base drives GH while BPC-157 is added for soft-tissue and gut repair through a hard training block.
View stack →In the same corner.
Other growth hormone peptides people compare against GHRP-2.
Questions, answered straight.
Is GHRP-2 legal?
GHRP-2 isn't an approved drug, and it isn't sold for human use. The vendors we compare offer it strictly for research use only. It's also on WADA's prohibited list, so competing athletes should steer clear. Rules vary by country, so check what applies where you are.
What does research use only actually mean?
It means the product is sold for laboratory and research purposes, not as a supplement or medicine for people. It hasn't been reviewed or approved for human use by the FDA. We aggregate prices and public lab data so you can see the landscape; what you do with that is between you and a licensed provider.
How do I store it?
Keep the sealed, freeze-dried vial in the fridge, and out of direct light. Once you mix it with bacteriostatic water, store it refrigerated and use it within a few weeks. Don't freeze a reconstituted vial.
Why dose it on an empty stomach?
GHRP-2 triggers a growth hormone pulse, and food, especially fats and carbs, blunts that pulse. People dose when their stomach is empty and wait about 20 minutes before eating. That's also why before bed is a popular timing slot.
How is it different from Ipamorelin?
Both hit the same ghrelin receptor to release GH. GHRP-2 is the stronger releaser but raises cortisol, prolactin, and appetite more; Ipamorelin gives a milder, cleaner pulse with fewer of those effects. Many people start with GHRP-2 for the bigger response and switch toward Ipamorelin if hunger or side effects bother them.