GHRP-6 is a synthetic six-amino-acid peptide that activates the ghrelin receptor and signals the pituitary to release a pulse of your own growth hormone.

What is GHRP-6 used for?

In research, it is used to study growth hormone release and was used as a tool to test pituitary GH reserve.

Research-use discussions usually describe 100-300 mcg per SubQ injection on an empty stomach, often three times daily.

GHRP-2 vs GHRP-6: what is the difference?

GHRP-2 releases more GH per microgram and causes less hunger, while GHRP-6 causes the strongest appetite.

GHRP-6 vs ipamorelin: which is cleaner?

Ipamorelin is usually called the cleaner option because it releases GH without meaningful appetite, cortisol, or prolactin effects.

Does GHRP-6 build muscle?

On its own, the evidence for meaningful muscle gain is weak, and the GH rise is modest next to injectable HGH.

What are the side effects of GHRP-6?

The biggest one is intense hunger, with others including water retention, tingling, and tiredness.

How do you reconstitute GHRP-6?

For a common 5 mg vial, adding 3 mL of bacteriostatic water gives about 1,667 mcg/mL.

Peptidesubcutaneous

GHRP-6

GHRP-6 is a growth hormone releasing peptide that triggers a short GH pulse through the ghrelin receptor.

Researched for

Recovery

Not yet audited

We have not published an audit on GHRP-6. Everything below is reference material, not our own reading of the literature, treat it as a starting point for questions, not as a grade.

How it is thought to work

Activates the ghrelin receptor (GHS-R1a) to trigger a natural GH pulse. [Source: Peptide Dosing Protocols]

GHRP-6 is a synthetic six-amino-acid peptide that activates the ghrelin receptor in the body to prompt the pituitary gland to release a pulse of its own growth hormone, and its most notable side effect is intense hunger shortly after dosing.

Reported side effects

The most common effects of GHRP-6 include intense hunger shortly after dosing, water retention, tingling or numbness in the hands, brief flushing or head-rush, and tiredness, with higher doses also raising cortisol and prolactin and potentially affecting blood sugar.

Who should avoid it

People with diabetes, insulin resistance, active or prior cancer, those who are pregnant or breastfeeding, and competitive athletes should avoid GHRP-6 or only use it under close medical supervision.

What gets monitored

Track IGF-1 and fasting glucose if relevant. [Source: Peptide Dosing Protocols]

Amount	Frequency	Route	Reported by
Standard: 300 mcg · Low: 100 mcg · High: 300 mcg	3x daily, at least 4 hours apartnull · 8 weeks on, 4 weeks off	SubQ	Peptide Dosing Protocols What it saysHide (secondary reference; provider confirmation required). Half-life: null. GHRP-6 is typically dosed at 100-300 mcg per injection.
Cycling reference: 6-8 weeks on, 4 weeks off. Cited for appetite stimulation and GH release with fat metabolism support.	not statedOn-cycle 6-8 weeks, off-cycle 4 weeks	subcutaneous	Peptide Therapy Reference Text, internal KB v4 What it saysHide (Aug 2026), secondary reference; provider confirmation required.

GHRP-6

How it is thought to work

Reported side effects

Who should avoid it

What gets monitored

What sources report

Common questions

What is GHRP-6?