DSIP
Delta Sleep-Inducing Peptide. Promote deep restorative sleep and regulate stress hormones naturally.
Last updated: May 2026
Category
Sleep & Recovery
Frequency
Once daily (before sleep)
Research
PreclinicalWhat is DSIP?
DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring neuropeptide discovered in 1974 by examining the blood of rabbits during slow-wave (delta) sleep. When transferred to awake rabbits, it induced delta sleep, a finding that sparked decades of research into sleep regulation. Browse the full peptide library for related sleep and mood compounds.
DSIP is found naturally in the human hypothalamus, pituitary, limbic system, and pineal gland, and circulates in the blood. Its levels rise during sleep and drop upon waking. For anxiety reduction without sedation during the day, consider Selank. Exogenous DSIP supplementation aims to enhance this natural signaling, promoting deeper and more restorative sleep.
Beyond sleep, DSIP has been studied for its stress-normalizing effects, it appears to reduce abnormally elevated cortisol while normalizing deficient cortisol, rather than simply suppressing it. For cognitive enhancement during waking hours, combine with Semax. This makes DSIP unique among sleep peptides and potentially useful for people with HPA axis dysregulation.
How It Works
Delta Sleep Promotion: DSIP increases the proportion of slow-wave (delta) sleep, the deepest, most restorative phase, critical for growth hormone release, memory consolidation, and cellular repair.
Cortisol Normalization: DSIP modulates the HPA (hypothalamic-pituitary-adrenal) axis, helping normalize abnormally high cortisol levels that are common in stressed individuals.
LH and GH Modulation: DSIP stimulates LH (luteinizing hormone) and GH (growth hormone) release, further amplifying the anabolic benefits of sleep.
Benefits
- Increased deep (delta) sleep duration
- Reduced sleep onset latency (fall asleep faster)
- Cortisol normalization in stress-dysregulated individuals
- Growth hormone release during sleep
- Reduced pain sensitivity (analgesic properties)
- Anti-stress and adaptogenic effects
- Improved mood and energy upon waking
Dosing Protocol
| Phase | Dose | Frequency | Duration |
|---|---|---|---|
| Sleep Induction | 100–300mcg | 30–60 min before sleep SC | 2–4 weeks |
| Stress Protocol | 100mcg | Evening SC | 4 weeks |
Always start at the lowest effective dose and titrate up gradually.
Side Effects
Common
- ⚠Drowsiness after injection (expected)
- ⚠Vivid dreams
- ⚠Mild headache in some users
Rare
- •Nausea at higher doses
- •Dizziness
Who Should NOT Use DSIP
- ✕Avoid driving or operating machinery after dosing
- ✕Pregnancy or breastfeeding
- ✕On sedative medications (additive sedation)
What to Expect
Drowsiness within 30–60 minutes. Many users report falling asleep faster and experiencing deeper, more vivid sleep.
Sleep architecture improving. Better rested upon waking. Cortisol levels normalizing.
Sustained improvements in sleep quality. Mood and energy during the day improving as a result.
Notes from Ho Chi Minh City
DSIP is the peptide I reach for when the heat in Phu My Hung breaks above 36C and the air conditioning fan keeps me on the wrong side of light sleep all night. 200mcg subcutaneous in the abdomen about 45 minutes before lights out and the deep sleep phase shows up clearly on my Oura ring data the next morning, usually 30 to 50 minutes more delta than my typical baseline. Pairing it with the room blackout and a cold shower beforehand matters more than the dose itself; on nights I skip those, the peptide alone won't carry the load. I cycle 3 weeks on, 1 week off, and I never use it during travel because the vivid dream effect can be disorienting in unfamiliar surroundings.
FAQ
Q: Is DSIP better than melatonin for sleep?
A: They work differently. Melatonin signals circadian timing (when to sleep). DSIP increases sleep depth (delta waves). They are complementary, some users take both. DSIP has more evidence for improving sleep quality and stress regulation.
Q: Can I use DSIP if I have insomnia?
A: DSIP may be particularly helpful for stress-related insomnia or difficulty reaching deep sleep. For severe insomnia, consult a physician. DSIP is not a first-line treatment for insomnia disorders. Source from the community-verified supplier list.
Where to Get DSIP in Vietnam
See our community-verified supplier list with COA verification and cold-chain shipping to Vietnam.
Related Peptides
Research & Sources
- Delta sleep-inducing peptide (DSIP): a still unresolved riddle · Graf MV, Kastin AJ · Journal of Neurochemistry (1984) PMID: 6694226
Foundational review of DSIP discovery, structure, and CNS distribution from one of the original research groups.
- DSIP in the regulation of the sleep-wake cycle · Schoenenberger GA · European Neurology (1984) PMID: 6539197
Reviews DSIP effects on slow-wave sleep architecture and EEG delta-band power changes.
- Delta sleep-inducing peptide (DSIP): effects on stress and sleep in humans · Schneider-Helmert D, Schoenenberger GA · Pharmacopsychiatria (1981) PMID: 6275400
Early human clinical data on DSIP for chronic insomnia and stress-related sleep disturbance.
- Stress-protective and adaptogenic activity of delta-sleep inducing peptide · Mikhaleva II, Prudchenko IA, Ivanov VT · Russian Journal of Bioorganic Chemistry (2011) DOI: 10.1134/S1068162011040091
Reviews HPA-axis modulation and cortisol-normalizing effects relevant to the stress-protocol dosing pattern.
Important Disclaimer
Educational content only. Not medical advice. Peptides discussed on this page are not approved by Vietnam’s Ministry of Health (Bộ Y Tế) or the Drug Administration of Vietnam (DAV) for the indications described. Research peptides are not stocked at Long Châu, Pharmacity, or any retail pharmacy in Vietnam. Consult a licensed physician before any use.