DSIP vs GHRP-2
A detailed comparison to help you understand the differences and choose the right peptide for your research goals.
DSIP
Delta Sleep-Inducing Peptide is a neuropeptide that promotes delta wave sleep, the deepest and most restorative phase of the sleep cycle.
Full details →GHRP-2
Growth Hormone Releasing Peptide 2 (GHRP-2) is considered one of the most potent GHRPs available. It provides strong GH release with moderate hunger increase compared to GHRP-6.
Full details →Side-by-Side Comparison
| Aspect | DSIP | GHRP-2 |
|---|---|---|
| Dose Range | 100 mcg–300 mcg | 100 mcg–300 mcg |
| Frequency | 1x daily | 3x daily |
| Cycle Length | 1–6 weeks | 8–12 weeks |
| Route | subcutaneous | subcutaneous |
| Mechanism | Modulates sleep-wake cycles by affecting sleep spindles and delta rhythms. May also influence stress hormones and have analgesic properties. | Binds to the ghrelin receptor (GHS-R) to stimulate GH release from the pituitary. Also has some direct effects on the hypothalamus. Causes less appetite increase than GHRP-6. |
| Typical Dosage | Typical dosing: 100-300mcg administered 30 minutes before sleep. Some protocols use it cyclically. | Typical dosing: 100-300mcg administered 2-3 times daily. Often stacked with GHRH peptides for enhanced GH release. |
| Administration | Subcutaneous or intramuscular injection before bedtime. Some users report better results with cyclical use. | Subcutaneous injection on an empty stomach. Can be used at bedtime to enhance natural GH pulse during sleep. |
| Side Effects | May cause grogginess upon waking, vivid dreams, or temporary headaches. | Moderate hunger increase, water retention, potential prolactin and cortisol elevation (less than GHRP-6), tingling sensations. |
| Best For |
What They Have in Common
DSIP, GHRP-2 are both commonly used for:
Key Differences
Unique to DSIP:
Unique to GHRP-2:
Which Has Stronger Evidence?
- Sleep Quality: DSIP has stronger research support.
| Goal | DSIP | GHRP-2 |
|---|---|---|
| Sleep Quality | high | medium |
Key Studies
DSIP
- Pichia pastoris secreted peptides crossing the blood-brain barrier and DSIP fusion peptide efficacy in PCPA-induced insomnia mouse models.
Frontiers in pharmacology, 2024
- Delta sleep-inducing peptide (DSIP): a still unresolved riddle.
Journal of neurochemistry, 2006
- [DSIP: the sleep peptide or an unknown hypothalamic hormone?].
Zhurnal evoliutsionnoi biokhimii i fiziologii, 1994
GHRP-2
- On the road of dried blood spot sampling for antidoping tests: Detection of GHRP-2 abuse.
Drug testing and analysis, 2021
- Effects of GHRP-2 and Cysteamine Administration on Growth Performance, Somatotropic Axis Hormone and Muscle Protein Deposition in Yaks (Bos grunniens) with Growth Retardation.
PloS one, 2016
- Ghrelin receptor agonist, GHRP-2, produces antinociceptive effects at the supraspinal level via the opioid receptor in mice.
Peptides, 2014
Ready to Learn More?
Looking for trusted sources?