GHRP-6
INVESTIGATIONALGrowth hormone releasing peptide | Strong appetite
Updated: August 2026.
Key points
- What it is: growth hormone releasing peptide (GHRP).
- Main use: GH stimulation and a marked increase in appetite.
- Typical dose: 100–300 mcg, 1–3 times a day, subcutaneous injection.
- Key result: strong GH release with the greatest hunger effect of the GHRPs.
- Common effects: intense hunger, fluid retention and drowsiness.
- Comparison: more 'hunger' than GHRP-2; combined with CJC-1295.
- Status: not FDA-approved.
Overview
What is GHRP-6?
GHRP-6 is a growth hormone releasing peptide known for causing a very marked increase in appetite in addition to stimulating GH. That strong hunger effect makes it popular in bulking phases for those who struggle to eat enough.
Key benefits
Potent GH release with improvements in recovery and body composition, and a greater appetite increase than other GHRPs, useful when the goal is to gain mass. It is usually combined with CJC-1295.
Mechanism of action
It stimulates the ghrelin receptor (GHS-R) in the pituitary, triggering GH pulses and a strong hunger signal. It has minimal effect on prolactin and cortisol.
Quick start guide
Dosing protocol
| Phase | Dose | Frequency | Duration |
|---|---|---|---|
| Standard | 100–300 mcg | 1–3 times/day (SC) | 8–12 weeks |
Subcutaneous route, often fasted. The specific dose must be assessed by a healthcare professional.
🧮 Calculate your exact syringe dose →GHRP-6 vs GHRP-2
| GHRP-6 | GHRP-2 | |
|---|---|---|
| GH release | Strong | Strong |
| Appetite increase | Very strong | Moderate |
| Prolactin/cortisol | Minimal | Slight |
| Typical use | GH and maximum appetite | Balanced GH |
⚠️ Who should NOT use it
- People with active cancer — raising GH/IGF-1 is discouraged.
- Pregnancy or breastfeeding.
- People with diabetes — monitor glucose.
- Always under the supervision of a healthcare professional.
What to expect
- Week 1-2: noticeable appetite increase and better sleep.
- Week 2-4: better recovery.
- Week 4-8: mass gain supported by the greater appetite.
- Week 8-12: sustained body-composition improvements.
- Side effects: intense hunger, fluid retention, drowsiness.
- Most effective for: bulking for those who eat little.
Side effects & safety
- Increased appetite after injection.
- Mild fluid retention.
- Drowsiness; useful before bed.
- Slight rise in prolactin or cortisol at high doses.
- Tingling or numbness in the hands.
- Allergic reaction: rash, itching or swelling.
- Signs of infection at the injection site.
- Severe numbness or tingling (carpal tunnel).
- Persistent thirst or high glucose.
- If you are pregnant or have active cancer.
Frequently asked questions
What is GHRP-6?
It is a growth hormone releasing peptide that stimulates GH and causes a strong increase in appetite.
What is the GHRP-6 dose?
Typically 100-300 mcg, 1-3 times a day, subcutaneously. The regimen is set by a professional.
What is the difference between GHRP-6 and GHRP-2?
GHRP-6 increases appetite much more; GHRP-2 is somewhat more balanced in that respect.
What is GHRP-6 combined with?
With a GHRH analog such as CJC-1295, for a more complete GH release.
What are the side effects?
Mainly intense hunger, plus fluid retention and drowsiness.
Is GHRP-6 approved?
It is not FDA-approved for human use.
Research areas
- Body composition
- Recovery
- Deep sleep
- Appetite
- GH stimulation
Related peptides
- GHRP-2 — GHRP with less appetite increase.
- CJC-1295 — GHRH analog; classic combination.
- Ipamorelin — Selective GHRP, without appetite effect.
Related articles
Related topics
- GHRP-6 for muscle mass
- GHRP-6 and appetite
- GHRP-6 dose
- GHRP-6 and sleep
- GHRP-6 side effects
- GHRP-6 cycle
Summary
What it is: Growth hormone releasing peptide (GHRP).
How it is researched: Subcutaneous, 100-300 mcg, 1-3 times a day.
Key features: Strong GH release and very intense appetite. Not FDA-approved.
Related peptides: GHRP-2, CJC-1295 and Ipamorelin.