GHRP-6
One of the original growth hormone releasing peptides. People run it to nudge their own GH pulse and, famously, to switch on serious appetite, often paired with CJC-1295 to lean a leaner bulk or recovery block.
Where to buy GHRP-6, cheapest first.
Prices from 4 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.
GHRP-6
What GHRP-6 actually does.
The simple version first, then a little more for the curious. No biochem degree required.
It copies ghrelin, your hunger hormone, to tell your pituitary to release a natural pulse of growth hormone, while also driving a strong appetite signal.
How it works
GHRP-6 is a synthetic hexapeptide that binds the growth hormone secretagogue receptor (GHS-R1a), the same receptor ghrelin uses. That triggers a pulse of growth hormone from the pituitary and also dampens somatostatin, the brake on GH release.
Where it acts
It works on the pituitary and hypothalamus to drive a GH pulse, and because it mimics ghrelin it also lights up the brain's hunger circuitry. That appetite signal is GHRP-6's defining trait among the GHRPs.
What people notice
The most reliable effect people report is intense hunger starting 20 to 30 minutes after a dose. Over weeks, those chasing GH-driven recovery, body composition, and sleep run it for the pulse it produces rather than any single dramatic effect.
Honest caveat: the GH-release pharmacology is genuine and well characterized, but the body-composition and recovery claims rest largely on older studies, animal work, and community reports, not modern controlled trials in healthy adults. 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-6 is an injection, given subcutaneously into fat with a tiny insulin needle. It isn't an oral peptide, so the injectable form is what people run, and timing around food matters more than with most peptides. The routine is below; for cycling and timing, see the full guide.
Reconstitute the vial
Add bacteriostatic water down the side of the vial (a 5mg vial + 2mL = 2.5mg/mL). Let it dissolve. Swirl gently, don't shake.
Draw your dose
On a U-100 insulin syringe, pull to your unit mark. 200mcg at 2.5mg/mL is 8 units (0.08mL). Use the calculator if you're unsure.
Inject on an empty stomach
Swab with alcohol, pinch a bit of fat, insert at 45–90°, push slowly. Dose on an empty stomach, at least 30 minutes before food, since glucose and insulin blunt the GH response.
Rotate your sites
Move to a different spot each time so no area gets sore or lumpy. Store 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-6's typical setup, already worked out. Change any value and the draw updates instantly.
Typical GHRP-6 dose: about 100 to 300 mcg per dose, two to three times a day on an empty stomach, with many people landing around 200 mcg. It's run in cycles, often alongside a GHRH like CJC-1295.
How to cycle GHRP-6.
How long people run GHRP-6, when to take a break, and the honest reasoning behind it.
Cycled, often alongside a GHRH like CJC-1295.
A cycle just means a defined run of time on the peptide, followed by a break. For GHRP-6 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? Mostly because the long-term human safety data does not exist, and because the receptor it acts on can become less responsive over a long continuous run. The cautious and widely followed approach is to run a focused block, then stop.
- Hold the timing through your block, each dose on an empty stomach, spaced across the day.
- Watch the side effects that build over a cycle, especially appetite and any water retention, and ease back if they get uncomfortable.
- Take a real break after a block before considering another. If you are using it for a specific goal, 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-6 that we can link to directly. We don't post purity numbers we can't source. When a vendor publishes a real GHRP-6 COA, it'll show up here.
What people pair it with.
GHRP-6 is rarely run alone. A GHRP gives a pulse; pairing it with a GHRH makes that pulse bigger and more useful, which is why these combinations dominate.
The classic GH pulse
The textbook secretagogue pair. CJC-1295 raises the baseline GH-releasing signal while GHRP-6 fires the pulse, so the two together produce a larger, more natural GH release than either alone.
View stack →Recovery & body comp
The GH pair plus a healing peptide. People run this in a recovery or recomposition block, leaning on the GH pulse for sleep and tissue repair and BPC-157 for soft-tissue recovery.
View stack →Hard-gainer support
Run alone, GHRP-6 is sometimes chosen specifically for its hunger signal by people who struggle to eat enough on a bulk. The appetite hit is the feature here, not a side effect.
View stack →In the same corner.
Other growth hormone peptides people compare against GHRP-6.
Questions, answered straight.
Is GHRP-6 legal?
GHRP-6 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 as a growth hormone secretagogue, so competing athletes should steer clear. Rules vary by country, so check what applies where you are.
Why does GHRP-6 make me so hungry?
Because it mimics ghrelin, your natural hunger hormone, and binds the same receptor. Intense appetite starting 20 to 30 minutes after a dose is the most consistent effect people report. Some run it for exactly that reason; others switch to Ipamorelin to avoid it.
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 does timing around food matter?
GHRP-6 works best on an empty stomach. Elevated blood glucose and insulin from a recent meal blunt the growth hormone response, so people dose at least 30 minutes before eating or a couple of hours after. Use the calculator to turn your vial and dose into exact units.
How is it different from Ipamorelin?
GHRP-6 is an older, less selective GHRP. It produces a strong appetite signal and a dose-dependent bump in cortisol and prolactin. Ipamorelin gives a cleaner GH pulse without the hunger or hormone spillover, which is why many people now prefer it. GHRP-6 isn't an oral peptide, so skip the capsule versions.