GHRP-6_Dosage, benefits & legal status
Also known as growth hormone releasing peptide 6
A growth-hormone shot that also triggers strong hunger, used for bulking.
Common vial size is what vendors typically sell, not a recommendation. Enter your own vial in the calculator.
What is GHRP-6?
Plain language first. The technical label stays, but it never stands alone.Overview
It raises your own growth hormone and triggers intense hunger, which is why it is mostly used for bulking.
GHRP-6 is a growth hormone releasing peptide that strongly activates the ghrelin (hunger) receptor.
What it's used for
Boosts your own growth hormone and triggers strong hunger, mainly used to bulk up and eat more.
How does GHRP-6 work?
What it does in the body, and where.GHRP-6 raises growth hormone, but its most reliable effect is hunger, and that is usually the point.
- 01It activates the ghrelin receptorGhrelin is the hunger hormone, and this copies it directly.
- 02Appetite becomes intenseFar stronger than with ipamorelin. For someone trying to eat in a surplus this is the reason to use it; for anyone else it is the reason not to.
- 03Growth hormone rises alongsideWith the same cortisol and prolactin increases as GHRP-2.
A schematic of the compound's mechanism, not a diagnostic image.
What else is it used for?
Each use below carries its own evidence level. Approved means regulators have cleared it for that purpose. Investigational means it is in trials. Early research means it is being studied and is not established.
- Strong appetite stimulation, which is its signature effectResearch only
- Raising growth hormone to gain muscleResearch only
The published record
3
Records indexed for GHRP-6
FDA: Category 3 · FDA: Category 2 · FDA: In category 2 (503B).
Counted from Europe PMC indexing, not read by a person. Human means indexed under humans, which includes reviews and work on human cells. Original studies exclude reviews and lab work on human cells.Last updated 12 September 2026.
At a glance
Four things to know about GHRP-6
Evidence
Research only
Category
Weight loss and metabolic
Common vial
5 mg
Half-life
About 2.5 hours
How much, and do you cycle it?
The range, and whether you take breaks.0.1 up to 0.3 mg per dose (start low, increase slowly), 1-3x daily. Commonly cycled, usually 8 to 12 weeks on and 4 offCommunity practice
Same picture as the rest of this family: the drop in response to sustained exposure is documented in people, the specific schedule is not. In practice the hunger is what limits how long anyone stays on it.
Source: 24-hour GHRP infusion attenuates the response to a later GHRP bolus (J Clin Endocrinol Metab, 1993)
How long does it stay in the body?
The half-life, and where the figure comes from.About 2.5 hoursHuman study
Nine healthy men, single intravenous dose. The compound leaves the bloodstream in two stages, spreading through the body in about 8 minutes and then clearing over about 2.5 hours.
Source: Cabrales A, Gil J, et al. Eur J Pharm Sci 2013;48(1-2):40-46, DOI 10.1016/j.ejps.2012.10.006
You can compare this against the whole library to see where it sits.
How do I dose and price it?
Enter your vial and your dose. Pick a mix. We show the draw and the cost.The vial holds a fixed amount of drug. Adding more water does not make more drug, it just spreads it thinner, so you draw a bigger number on the syringe for the same dose.
Choose your mix
Measuring the water1 mL = one full 100-unit syringe.
Your draw
4 / 100 unitsGHRP-6 starts at $11.99 across 28 vendors, typically $2.80 – $6.00 per mg.
39 listings, last read Sep 5, 2026. Shipping and card fees are not included.
How do you store it?
Before mixing, and after.Dry powder in the freezer or fridge. Once mixed, fridge, and use within about a month.
Unmixed lyophilized GHRP-6 keeps for a long time cold. Once you add water the clock starts: most reconstituted vials hold up for roughly 28 to 30 days at fridge temperature. Keep it out of light, and do not freeze it after mixing.
What are the side effects and cautions?
Known cautions and warnings for this compound.Can cause a histamine flush: temporary flushing, itching, or welts near the injection, usually mild and short-lived. Injecting slowly helps. If it spreads, or you get facial or throat swelling or trouble breathing, treat it as a reaction and get help immediately.
Who should avoid it
- Active cancer
- Pregnancy
- Banned in drug-tested sport
Stop and get help
- Signs of an allergic reaction
- Persistent milky nipple discharge
Common effects
- Intense hunger, which is the signature effect
- Water retention
- Tiredness after dosing
- Raised prolactin and cortisol
What regulators say
- FDA: Bulk Drug Substances Nominated for Use in Compounding Under Section 503A (interim categories 1, 2, 3), updated May 14, 2026Category 3
Nominated without adequate support on the 503A list; category 2 on the 503B list
Checked 11 September 2026 - FDA: Certain Bulk Drug Substances for Use in Compounding that May Present Significant Safety Risks (category 2 and withdrawn nominations), current as of April 22, 2026In category 2 (503B)
Added September 29, 2023. Potential effect on cortisol and increase in blood glucose
Checked 11 September 2026 - FDA: Bulk Drug Substances Nominated for Use in Compounding Under Section 503B (interim categories 1, 2, 3), updated March 21, 2025Category 2Checked 11 September 2026
What actually helps, according to the people doing it
Nobody's running trials on this. What follows is the folk wisdom that keeps surfacing in Reddit, peptide forums, and the Discord groups, sorted from "probably real" to "someone swears by it." Keep in mind, NONE of this is doctor advice.
Change how you inject (this helps most people)
The tip that comes up most on r/peptides is to add more water. Mix your vial with 3 or 4mL of bac water instead of 1 to 2mL. Same dose, spread thinner, so your skin reacts less.
Small habits people swear by
- 1Let it warm to room temperature. Cold stings more.
- 2Let the alcohol dry fully before the needle goes in.
- 3Inject slow, over five to ten seconds.
- 4Move your spot around, at least an inch from last time.
- 5For a hard lump, warm compress after. For a red itchy welt, ice.
Treat the itch
This is where Benadryl and Zyrtec come up constantly on the boards. Most people take one 30 to 60 minutes before the shot if they know they tend to react. Claritin works too. Some skip the pill and use Benadryl cream before, or hydrocortisone cream after. Quercetin gets mentioned a lot as the gentler, natural option.
One heads up you'll also see repeated: taking an allergy pill before every shot can hide a real allergy building underneath. That's why some people don't do it by default.
The deeper end
In the more advanced threads, people keep KPV around and inject it when a reaction flares, and say it clears fast. Others try low-dose naltrexone (LDN) as a longer-term fix, but that's real experimenter territory. And a common reminder on the forums: if your reactions are suddenly bad or started with a new vial, the peptide itself might be the problem, not you.
Redness that spreads past a couple inches, streaks, feels hot, oozes, or comes with a fever means a possible infection. See a doctor. Hives all over, a swollen face or throat, or trouble breathing is a real allergic reaction. Act on that right away.
Where this page says nothing is established, that means nobody has studied it, not that a compound is safe.
Is GHRP-6 approved?
And where the numbers on this page come from.No. GHRP-6 is not approved for any use, anywhere. It is sold labelled for laboratory research only, and there is no legal route to buy it for human use.
- Approval statusResearch only
- RouteUnder the skin (subcutaneous)
- CheckedSeptember 2026
What has happened recently
We have not yet written a full regulatory note for this compound. The status above is current as of the date shown.
Banned in drug-tested sport. Most research peptides are prohibited under WADA's S0 category, which covers any substance with no approval from any regulatory authority for human use. That means a compound can be banned without ever being named on the prohibited list. Check with your own anti-doping authority rather than assuming absence from the list means permitted.
You can compare this against the whole library, or read how to check a seller.
- DoseFrom research and community reports. No regulator has reviewed this dose.
- Vial sizeFrom what vendors typically list; not a recommendation.
- Sources
- Reviewed8 September 2026
What else is like GHRP-6?
Others in Fat loss without GLP-1, side by side.If you're weighing GHRP-6, it's worth reading Humanin, Melanotan II, and Adipotide in the same class.
A growth-hormone shot that also triggers strong hunger, used for bulking.
- Dose
- 0.1 up to 0.3 mg per dose (start low, increase slowly)
- How often
- 1-3x daily
A natural longevity peptide studied for cell protection and aging.
- Dose
- Research only
- How often
- As studied
A shot for a fast, deep tan, plus libido and appetite effects.
- Dose
- 0.25 up to 1 mg per dose (start low, increase slowly)
- How often
- Daily loading, then maintenance
An experimental fat-loss peptide considered dangerous, with no safe human use.
- Dose
- Research only
- How often
- Research only
Guides for this compound
- How to Reconstitute a Peptide
Mix peptide powder with bacteriostatic water, step by step.
- How to Read an Insulin Syringe
Read the units, convert to millilitres, and draw the exact dose.
- mcg vs mg: The Peptide Dosing Mistake to Avoid
Your vial says mg and your protocol says mcg. Here is the conversion and how to check it.
- Why Does My Peptide Injection Itch or Welt
Injection-site irritation, a histamine reaction, or a true allergy, and how to tell them apart.
- How to Read a Peptide COA
What the purity number does and does not tell you, and how to spot an edited report.
Sources
- Effects of GHRP-6 on nocturnal GH, ACTH and cortisol and on sleep EEG in man: role of route of administration(1999)In healthy young men, oral GHRP-6 left GH, ACTH and cortisol unchanged. Sublingual produced only a trend toward higher GH in the first half of the night. Route decides whether anything happens at all.
- GHRP-6 raises intracellular calcium in cultured human pituitary adenoma cells(1998)Cultured cells from human pituitary adenomas. Almost all tumour cell types responded, not only the GH-secreting ones. This is cell-culture work, not a clinical result.
- FDA, bulk drug substances for compounding that may present significant safety risks(2026)GHRP-6 is in 503B category 2, added 29 September 2023, and is still on the live list. FDA cites immunogenicity risk for certain routes from aggregation and peptide-related impurities, says it has identified only limited safety information, and names two specific concerns in what does exist: an effect on cortisol, and increased blood glucose driven by decreased insulin sensitivity.
Last reviewed 8 September 2026
Beyond these, 3 records are indexed. Browse the records