DSIP (Delta Sleep-Inducing Peptide)

Delta Sleep-Inducing Peptide | Sleep & Stress Modulator

Weight: 848.81 Da
Half-life: ~15 minutes (in vitro)
Chain: 9 amino acids
6 studies
2021 latest
3 recent
Emerging
Dose 100-300mcg
Frequency 1x daily
Cycle 5-10 days
Storage 2-8°C refrigerated
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DSIP is a naturally occurring nonapeptide discovered in 1974 in rabbit brain. Originally isolated for sleep-promoting properties, it has diverse neuromodulatory effects including stress reduction, pain modulation, and endocrine regulation without traditional sedative effects.

Mechanism of Action

Modulates multiple neurotransmitter systems including GABA enhancement, NMDA receptor interaction, and endogenous opioid system modulation. Also regulates hypothalamic-pituitary-adrenal axis for stress response.

01 Enhanced sleep quality through slow-wave sleep promotion
02 Stress reduction via cortisol modulation
03 Potential pain relief
04 Mood stabilization without traditional sedative effects
05 No tolerance or dependence reported
06 Short cycle duration (5-10 days)

Molecular Data

Molecular Weight
848.81 Da
Chain Length
9 amino acids
Type
Nonapeptide
Amino Acid Sequence
One-letter: WAGGDASGE
H₂N
W 1
O ‖ C
N
A 2
O ‖ C
N
H
G 3
O ‖ C
N
H
G 4
O ‖ C
N
D 5
O ‖ C
N
A 6
O ‖ C
N
S 7
O ‖ C
N
H
G 8
O ‖ C
N
E 9
COOH
Trp
1

Tryptophan

Position 1

Ala
2

Alanine

Position 2

Gly
3

Glycine

Position 3

Gly
4

Glycine

Position 4

Asp
5

Aspartic Acid

Position 5

Ala
6

Alanine

Position 6

Ser
7

Serine

Position 7

Gly
8

Glycine

Position 8

Glu
9

Glutamic Acid

Position 9

N-terminus C-terminus
Hydrophobic
Polar
Positive (+)
Negative (-)
Modified
Peak 0.0 mcg
Trough 0.0 mcg
SS Peak 0.0 mcg
SS Trough 0.0 mcg

Research Indications

Sleep
Deep Sleep Enhancement most effective

Promotes delta wave sleep, the most restorative sleep phase for physical recovery.

Sleep Efficiency most effective

Reduces sleep latency and nocturnal awakenings without morning grogginess.

Natural Sleep Architecture effective

Supports natural sleep cycles rather than forcing sedation like traditional sleep aids.

Mood
Stress Response Modulation effective

Helps regulate cortisol and stress response through HPA axis modulation.

Mood Stabilization effective

Supports emotional balance without sedation.

Anxiety Reduction effective

May help reduce anxiety through neuromodulatory effects.

Pain & Recovery
Pain Modulation moderate

Significantly reduced pain levels in 6 of 7 patients with chronic pain conditions.

Withdrawal Support moderate

Helps manage withdrawal symptoms in alcohol and opioid-dependent patients.

Athletic Recovery moderate

Supports post-training recovery through enhanced sleep quality.

Dosing Protocols

Subcutaneous injection is the standard route. Best taken 30-60 minutes before bedtime. Some prefer earlier evening dosing for gradual onset.

GoalDoseFrequencyRoute
Sleep enhancement100-200mcgOnce nightlySubQ
Chronic pain support250-300mcgDailySubQ or IV
Stress management150mcgEveningSubQ
Withdrawal support200-300mcgTwice dailyIV preferred
Athletic recovery100-150mcgPost-trainingSubQ

Reconstitution Instructions

Materials Needed:
  • DSIP peptide vial (1-5mg typical)
  • Bacteriostatic water (1-2mL)
  • Insulin syringes (0.3-0.5mL)
  • Alcohol swabs
  • Sterile needle for mixing
  1. 1 Clean vial tops with alcohol swab and let dry completely
  2. 2 For 1mg vial, add 1mL bacteriostatic water (creates 1000mcg/mL)
  3. 3 Inject water slowly down vial side to prevent foaming
  4. 4 Gently roll between palms - do not shake
  5. 5 Solution should be clear and colorless
  6. 6 For 100mcg dose, draw 0.1mL (10 units on insulin syringe)
  7. 7 Store reconstituted peptide in refrigerator immediately

Interactions

++
Melatonin
Both regulate sleep-wake cycles; complementary benefits.
synergistic
~
GABA Agonists
DSIP enhances GABA - watch for excessive sedation.
monitor
+
Cortisol Modulators
Can combine for comprehensive stress management.
compatible
++
Selank
Complementary anxiolytic effects.
synergistic
+
Semax
Different mechanisms; can optimize 24-hour function.
compatible
~
Opioid Medications
May modulate opioid receptors; requires professional supervision.
monitor
+
Growth Hormone Peptides
No direct interaction; DSIP may support natural GH release during sleep.
compatible
++
Epitalon
Both support circadian regulation and sleep quality.
synergistic

What to Expect

First Dose
Noticeable sleep pressure and easier sleep onset
Night 1-3
Deeper sleep, fewer awakenings, vivid dreams possible
Day 2-5
Improved morning refreshment, stable daytime energy
Day 5-10
Cumulative stress reduction, mood improvements
Post-Cycle
Benefits may persist 1-2 weeks after stopping

Side Effects & Safety

Common Side Effects

  • Generally well-tolerated with minimal side effects
  • Mild drowsiness or dizziness initially (some users)
  • Occasional headaches in sensitive individuals
  • No tolerance or dependence reported in studies

Stop Signs - Discontinue if:

  • Excessive daytime sedation
  • Paradoxical insomnia or agitation
  • Persistent headaches
  • Any allergic reactions
  • Mood changes or depression
  • Unusual dreams causing distress

Contraindications

  • Avoid driving until effects are known
  • Pregnancy or breastfeeding

Quality Checklist

Good Signs

  • White lyophilized powder before reconstitution
  • Clear and colorless solution when properly mixed
  • Reputable source with third-party testing

Warning Signs

  • Short stability period - use within 14 days when reconstituted
  • Protect from light exposure and temperature fluctuations
  • Limited nasal formulation stability (use within 10 days)

Bad Signs

  • Yellow or cloudy solution indicates degradation or contamination
  • Discolored powder

References

  • Effects of Delta Sleep-Inducing Peptide on Sleep of Chronic Insomniac Patients: A Double-Blind Study
    Schneider-Helmert D
    Neuropsychobiology (1992)

    Double-blind placebo-controlled study; DSIP (15-30 nmol for 6 consecutive nights) showed higher sleep efficiency and shorter sleep latency, though statistical effects were weak.

  • Therapeutic Effects of Delta-Sleep-Inducing Peptide (DSIP) in Patients with Chronic, Pronounced Pain Episodes: A Clinical Pilot Study
    Schoenenberger GA, Schneider-Helmert D
    European Neurology (1984)

    7 patients with chronic pain (migraine, vasomotor headaches); 25 nmol IV DSIP for 10 days significantly reduced pain levels in 6 of 7 patients.

  • DSIP in the Treatment of Withdrawal Syndromes from Alcohol and Opiates
    Dick P, Costa C, Fayolle K, et al.
    European Neurology (1984)

    107 patients (47 alcohol, 60 opiate withdrawal); DSIP (25 nmol/kg IV) produced beneficial effects in 97% of opiate addicts and 87% of alcoholics with immediate onset and lasting symptom relief.

  • Acute and Delayed Effects of DSIP (Delta Sleep-Inducing Peptide) on Human Sleep Behavior
    Schneider-Helmert D, Schoenenberger GA
    International Journal of Peptide and Protein Research (1983)

    6 normal volunteers; 25 nmol/kg IV DSIP induced 59% increase in total sleep time within 130 minutes; improved subsequent night sleep efficiency without sedation.

  • Delta Sleep-Inducing Peptide Recovers Motor Function in SD Rats After Focal Stroke
    Tukhovskaya EA, Ismailova AM, Shaykhutdinova ER, et al.
    Pharmaceutics (2021)

    120 mcg/kg intranasal DSIP for 8 days accelerated motor function recovery (rotarod test) after focal stroke in rats; brain infarction was smaller but not statistically significant.

  • Successful Treatment of Withdrawal Symptoms with Delta Sleep-Inducing Peptide
    Larbig W, Gerber WD, Kluck M, Schoenenberger GA
    Neuropsychobiology (1984)

    DSIP (25 nmol/kg IV) administered to 67 patients; beneficial effect in 48 of 49 evaluable patients (22 alcoholics and 26 of 27 opiate addicts) with good tolerance.

Related Peptides

Selank synergistic

Complementary anxiolytic effects.

Semax compatible

Different mechanisms; can optimize 24-hour function.

Epitalon synergistic

Both support circadian regulation and sleep quality.

Disclaimer

This information is for educational and research purposes only. Consult a healthcare professional before use.