GHRP-6

GHRP-6 (Growth Hormone Releasing Peptide 6)

The first widely studied GHRP — produces strong GH release alongside significant hunger and appetite stimulation via ghrelin.

GHRP-6 is not approved by the FDA for human use. It is sold strictly for research purposes only and is not intended for human consumption, diagnosis, treatment, or prevention of any disease or condition. Purchase and use is entirely at your own risk.

Sourcing for research purposes? Get 50% off at Ascension Peptides.

Shop now →

What it is

GHRP-6 is a synthetic hexapeptide and one of the original GHRPs studied for its ability to stimulate GH release. It was among the earliest peptides used in both clinical research and by athletes seeking to increase GH levels.

Its mechanism involves activation of the ghrelin receptor (GHS-R1a). Because ghrelin is also the primary appetite-stimulating hormone, GHRP-6 produces a strong and often uncomfortable hunger response at typical doses — a side effect that distinguishes it from newer, more selective GHRPs like Ipamorelin.

What research shows

Strong, reliable GH pulse induction — well-documented in human studies
Significant ghrelin-mediated appetite stimulation — the hunger side effect is pharmacological, not psychological
Cortisol and prolactin elevation at higher doses
IGF-1 increase with chronic use
Among the most extensively studied GHRPs in published literature

What remains unknown

Whether the hunger side effect can be meaningfully mitigated without losing GH benefit
Long-term effects on appetite regulation with chronic use
Comparative clinical efficacy vs. newer selective GHRPs for body composition

Administration basics

Common use cases

GH optimization, appetite stimulation (sometimes used intentionally in underweight or recovery contexts), body composition.

Half-life

~2 hours.

Administration

Subcutaneous injection. Typically dosed before meals or before sleep.

Source this compound

Looking for GHRP-6?

Use this link to get 50% off your order at Ascension Peptides — discount applied automatically at checkout.

Ascension Peptides is a third-party research compound vendor. We earn a commission if you purchase through our link, at no cost to you. All compounds are sold for research purposes only.

Get 50% off at Ascension Peptides

Research Protocols & Common Usage

Doses used in research

Research studies have used 100–300mcg per injection, typically 3x daily
Community protocols commonly follow similar 3x daily dosing on an empty stomach

Administration routes studied

Subcutaneous injection (fasting state for best effect)

Typical protocol duration

Most research has run 4–12 weeks. Community use typically cycles 8–12 weeks.

Common stacking protocols

GHRP-6 + CJC-1295 — standard GHRP/GHRH combination
GHRP-6 + Sermorelin — GHRP/GHRH pairing used in some protocols

Contraindications & combinations to avoid

History of eating disorders — GHRP-6 causes significant hunger and appetite stimulation via ghrelin
Active cancer or cancer history
Cortisol-sensitive conditions — GHRP-6 elevates cortisol
Should not be combined with other GHRPs — redundant mechanism

Dosing information reflects doses used in published research and commonly reported community protocols only. This is not a personal recommendation. These compounds are not FDA-approved for human use in the contexts described. Consult a qualified healthcare provider before starting any protocol.

Considering stacking?

See the stacking guide for common combinations with GHRP-6 and what to avoid.

Stacking guide

Track your GHRP-6 protocol

Log your experience, track outcomes over time, and get AI-powered interpretation of your results after 14 days of data. Private, $14.99/month.

Start tracking

Get research updates

We'll notify you when we update the GHRP-6 page or publish related research.

Community Reviews

Reviews reflect individual user experiences with research compounds and are not medical advice. Results vary. These compounds are not FDA approved for human use. Peptelligent does not verify reported experiences.