GHRP-6 vs Kisspeptin-10
Head-to-head comparison of GHRP-6 (Growth Hormone Releasing Peptide-6) and Kisspeptin-10 (Metastin 45-54 (KiSS-1 Fragment)) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | GHRP-6 | Kisspeptin-10 |
|---|---|---|
| Category | Performance | Performance |
| Full Name | Growth Hormone Releasing Peptide-6 | Metastin 45-54 (KiSS-1 Fragment) |
| Molecular Weight | 873.01 Da | 1,302.41 Da |
| Half-Life | ~15-60 minutes | ~4 minutes |
| Amino Acids | 6 | 10 |
| Typical Dose | 100-300 mcg | 100-500 mcg |
| Route | SC / IV | SC / IV |
| Purity | — | — |
| Studies Count | 186 | 156 |
| Research Status | Clinical Trials | Clinical Trials |
GHRP-6 Benefits
- ✓Potent GH release stimulation
- ✓Muscle growth and strength
- ✓Appetite stimulation (ghrelin pathway)
- ✓Improved body composition
- ✓Enhanced recovery from training
Kisspeptin-10 Benefits
- ✓Stimulates natural testosterone production
- ✓Activates GnRH release
- ✓Increases LH and FSH
- ✓Does not suppress HPG axis
- ✓May restore fertility
GHRP-6 Dosing
Standard: 100-300 mcg SC 2-3 times daily|Pre-workout: 100 mcg 30 min before training|Pre-bed: 100-200 mcg for overnight GH pulse
Kisspeptin-10 Dosing
Standard: 100-500 mcg SC daily|Hormone Optimization: 200 mcg SC twice daily|PCT Support: 300 mcg SC daily for 2-4 weeks|Research typically uses IV infusion in clinical settings
GHRP-6 Side Effects
- ⚠Common: Increased appetite (significant), water retention, tingling
- ⚠Moderate: Cortisol elevation (dose-dependent), lethargy
- ⚠Rare: Elevated prolactin at high doses
Kisspeptin-10 Side Effects
- ⚠Common (Mild): Injection site discomfort, mild flushing
- ⚠Rare: Temporary mood changes, headache
- ⚠Well tolerated in clinical studies
- ⚠Does not cause HPG axis suppression
Research Overview
GHRP-6
GHRP-6 has solid pre-clinical and clinical evidence for GH stimulation. Well-characterized pharmacology. More appetite stimulation than Ipamorelin due to ghrelin receptor activation.
Kisspeptin-10
Kisspeptin-10 has growing clinical evidence. Multiple human studies demonstrate reliable GnRH stimulation and subsequent testosterone increase. Being actively studied for reproductive medicine, including IVF protocols and hypogonadism. Unique advantage of not suppressing the HPG axis.
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