Kisspeptin-10 vs GHRP-6
Head-to-head comparison of Kisspeptin-10 (Metastin 45-54 (KiSS-1 Fragment)) and GHRP-6 (Growth Hormone Releasing Peptide-6) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Kisspeptin-10 | GHRP-6 |
|---|---|---|
| Category | Performance | Performance |
| Full Name | Metastin 45-54 (KiSS-1 Fragment) | Growth Hormone Releasing Peptide-6 |
| Molecular Weight | 1,302.41 Da | 873.01 Da |
| Half-Life | ~4 minutes | ~15-60 minutes |
| Amino Acids | 10 | 6 |
| Typical Dose | 100-500 mcg | 100-300 mcg |
| Route | SC / IV | SC / IV |
| Purity | — | — |
| Studies Count | 156 | 186 |
| Research Status | Clinical Trials | Clinical Trials |
Kisspeptin-10 Benefits
- ✓Stimulates natural testosterone production
- ✓Activates GnRH release
- ✓Increases LH and FSH
- ✓Does not suppress HPG axis
- ✓May restore fertility
GHRP-6 Benefits
- ✓Potent GH release stimulation
- ✓Muscle growth and strength
- ✓Appetite stimulation (ghrelin pathway)
- ✓Improved body composition
- ✓Enhanced recovery from training
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 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 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
GHRP-6 Side Effects
- ⚠Common: Increased appetite (significant), water retention, tingling
- ⚠Moderate: Cortisol elevation (dose-dependent), lethargy
- ⚠Rare: Elevated prolactin at high doses
Research Overview
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.
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.
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