GHRP-6
Research profile · How we handle evidence
Famous for dramatically increasing appetite - perfect for hard gainers who struggle to eat enough. Also boosts growth hormone for muscle building and recovery.
Evidence Score
Preliminary signal
Category
Therapeutic area
Standard Dose
2-3x daily
Half-life
Plasma elimination
Route
Subcutaneous
Safety Tier
Limited data
Overview
GHRP-6 is famous for one thing above all else: it will make you ravenous. About 20 minutes after injecting, you'll feel like you haven't eaten in days, which is exactly why bodybuilders love it during bulking phases when they need to force down thousands of extra calories. Beyond the hunger, it also triggers a solid growth hormone pulse that improves recovery, sleep quality, and muscle repair. If you don't want the appetite effect, you're better off with ipamorelin instead. One heads-up: like other GHRPs, it can bump up cortisol and prolactin a bit, so cycling on and off is smart. Best used before meals on an empty stomach for maximum GH punch.
Mechanism of Action
GHRP-6 produces the strongest hunger response of all GHRPs, bodybuilders use it specifically to force-feed during bulks. Ipamorelin is the cleaner alternative if you don't want the appetite effect. Compared to GHRP-2, GHRP-6 hits harder but with more side effects. Hexarelin is more potent for GH but GHRP-6 is more predictable.
pH & Mixing
Peptides reconstituted at very different pH levels can destabilize when combined in the same syringe, which lowers how much of the peptide your body actually absorbs. If you're unsure whether two peptides are close enough in pH, reconstitute and inject them separately.
A dedicated compatibility check between two specific peptides is coming to the Compare tool. This section covers this peptide's pH only.
Benefits
- Strong growth hormone boost
- Massive appetite increase
- Better recovery
- Improved sleep quality
Side Effects
- Intense hunger
- Water retention
- May affect cortisol and prolactin
- Can cause tiredness
Contraindications
- Pregnant or breastfeeding women
- Individuals under 18 years old
- Those with known allergies to peptide components
- Active cancer
- Uncontrolled diabetes
Structure & Sequence
Verified structure
GHRP-6
Sequence illustration backed by PubChem match.
- Amino Acid Sequence
- His-D-Trp-Ala-Trp-D-Phe-Lys-NH2
- Molecular Weight
- 873.01 Da
- Chemical Formula
- C46H56N12O6
- CAS Number
- 87616-84-0
- Reconstituted pH
- ~7.2
- InChIKey
- WZHKXNSOCOQYQX-UHFFFAOYSA-N
Stack & Route Context
Stacks with
- CJC-1295
- GHRP-2
Administration
Subcutaneous
Research Status
Research chemical
Approval Status
Research
Sports Legal
Restricted
References
- 1View source
GHRP-6 acts in the arcuate nucleus to stimulate GH secretion
1993
- 2
Appetite-stimulating effects of growth hormone releasing peptide-6
2000
This profile summarizes research literature for education only. It is not medical advice, and it does not diagnose, treat, or recommend a dose. Consult a qualified professional before changing a protocol.