library.onepin.app/ghrp-6 Peptide Education Library

Education only, not medical advice◆ 21+◆ Every dose is an example to finalize with a licensed provider

OnePin Peptide Library · Growth Hormone

Growth Hormone Synthetic hexapeptide Not FDA-approved · investigational

GHRP-6

GHRP6

Synthetic hexapeptideGhrelin receptor agonistGrowth hormone releasing peptideStrong appetite stimulant

GHRP-6 (Growth Hormone Releasing Peptide-6) is a synthetic hexapeptide ghrelin receptor agonist that produces the strongest appetite stimulation of any GHRP. It was one of the earliest GHRPs discovered and produces robust GH release but with pronounced hunger, cortisol elevation, and prolactin elevation compared to Ipamorelin. GHRP-6 is primarily used when appetite stimulation is a desired therapeutic goal (wasting conditions, difficulty eating) or when maximum GH output is needed regardless of side effects.

Quick Start

Route

SubQ injection

Start low

100 mcg

Frequency

1-3 times daily

Timing

Fasted. Extreme hunger follows.

Fasted 2+ hours. Bedtime or pre-meal (causes strong hunger). Can split into 2-3 daily doses. Strongest ghrelin receptor agonist.

❋

Start here. Every protocol below is ordered lowest-first. Begin at the smallest effective dose, hold about a week to assess tolerance, and step up only if needed.

Tiered Protocols · lowest first

Quick Start

Conservative start

100 mcg · SubQ injection · 1-3 times daily

Lowest starting point. Hold about a week to assess tolerance before stepping up.

100 mcg

1-3 times daily

Standard

Appetite & Recovery

100-150 mcg · SubQ · 3x Daily

anecdotal · community

100-150 mcg

3x Daily

Research

GH-Provocation Test (single dose)

300 mcg/kg · Oral · Single administration

human study · Mericq et al. 1995 (Eur J Endocrinol 133(4):425, PMID 7581965)

300 mcg/kg

Single administration

Reconstitution CalculatorU-100

Vial strength

BAC water

Target dose

050100u

Draw to

— units

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How it works

GHRP-6 activates GHS-R1a with strong ghrelin-mimetic activity, producing both GH release and potent appetite stimulation through hypothalamic hunger signaling. More cortisol and prolactin elevation than GHRP-2 or Ipamorelin. The hunger effect is often dramatic and occurs within 15-20 minutes of injection.

What to expect

Early

Days 1–7

Immediate: Extreme hunger. Days 1-7: Sleep improvements, body composition changes beginning.

Mid

Weeks 2–4

Weeks 2-6: Continued GH effects.

Later

Weeks 4–12

Weeks 6+: Full body composition effects with GHRH analog.

Evidence

HumanPresent

AnimalStrong

In-vitroPresent

1993Massive growth hormone (GH) discharge in obese subjects after the combined administration of GH-releasing hormone and GHRP-6 · Cordido F, Penalva A, Dieguez C, Casanueva FF, Journal of Clinical Endocrinology & Metabolism ↗peer reviewed

1998Growth hormone (GH)-releasing peptide-6 requires endogenous hypothalamic GH-releasing hormone for maximal GH stimulation · Pandya N, DeMott-Friberg R, Bowers CY, Barkan AL, Jaffe CA, Journal of Clinical Endocrinology & Metabolism ↗peer reviewed

2012Pharmacokinetic study of Growth Hormone-Releasing Peptide 6 (GHRP-6) in nine male healthy volunteers · Hernandez-Bernal F, Castellanos-Sierra G, Catasus-Alvarez K, et al, European Journal of Pharmaceutical Sciences ↗trial registry

2017Synthetic Growth Hormone-Releasing Peptides (GHRPs): A Historical Appraisal of the Evidences Supporting Their Cytoprotective Effects · Berlanga-Acosta J, Garcia-Ojalvo A, Fernandez-Mayola M, et al, Clinical Medicine Insights: Cardiology ↗review

The honest take

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Strongest appetite GHRP

Confirmed. Most potent ghrelin-mediated hunger of any GHRP. Therapeutic advantage in cachexia/wasting.

Interactions & stacking

What's safe to combine, and what belongs in a separate pin.

Safe & synergistic

BPC-157Non-overlapping

VIPNo conflict

CJC-1295 no DACGHRP + GHRH synergy.

SermorelinGHRP + GHRH synergy.

Keep separate

TesamorelinUse Ipamorelin with Tesa in standard protocols.

CJC-1295 with DACDAC maleimide.

Side effects & safety

Commonly reported

Extreme hunger (defining feature)
Water retention
Cortisol elevation
Prolactin elevation
Lethargy

Less common & notes

Anxiety, sleep disruption.
Prolactin gynecomastia risk at high doses.
Cortisol effects more pronounced than other GHRPs.

Pharmacokinetics

Illustrative plasma concentration · 24 h

Half-life

0.33h

Peak · Tmax

0.25h

Elimination

1.65h

Activity

4-6 hours (GH pulse lasts 2-3 hours; appetite stimulation persists 1-2 hours)

Storage. Standard BAC water 2-8C. 28 days.

Regulatory status

Not FDA-approved. WADA prohibited under S2.

Put it to work

Calculate, log & track

Open GHRP-6 straight into OnePin with your vial and dose pre-filled, then let it handle the syringe math and remind you before the vial runs out.

Open GHRP-6 in the app →

Go deeper

The guide & community

The complete GHRP-6 walkthrough, real protocol discussion and coaching live inside the BlessUp community on Skool.

Join the community ↗

Open in app Community