DSIP (Delta Sleep-Inducing Peptide) is a nine amino acid neuropeptide discovered in 1977. It modulates sleep architecture by promoting delta wave activity, the deepest stage of sleep where physical recovery and growth hormone release peak. It is not a sedative. You do not get drowsy. Your sleep just gets deeper and more restorative. It also appears to normalize the cortisol rhythm and modulate pain perception. The research is old and no large human trials exist, but the mechanism is well-characterized and the community reports are consistent.
DSIP Protocol
Dose: 100-300mcg SubQ before bed | Frequency: Once nightly | Cycle: 2-4 weeks on, 1-2 weeks off | Route: SubQ
Pin 30-60 minutes before bed. DSIP is not a sedative. You will not feel drowsy. The effect is on sleep architecture, not wakefulness. Give it 3-5 nights to notice the difference.
DSIP Effects
Deep sleep enhancement (65%). Promotes delta wave (slow-wave) sleep. The stage where physical recovery and GH release peak.
Cortisol normalization (50%). Helps normalize the cortisol rhythm. Useful for people with stress-disrupted sleep.
Pain modulation (35%). Some analgesic properties reported in early studies. Minor effect.
Stress resilience (40%). Better stress tolerance reported from improved sleep architecture and cortisol regulation.
DSIP Side Effects
Headache (5%). Mild. Usually only the first night or two.
Vivid dreams (15%). Not necessarily a side effect. Your deeper sleep means more dream activity. Some people love it, some find it unsettling.
Nausea (3%). Rare. Mild when it occurs.
DSIP Dosing by Use Case
Condition
Dose
Duration
Notes
Sleep quality improvement
100-300mcg SubQ before bed
2-4 weeks on, 1-2 weeks off
The primary use case. DSIP promotes delta wave sleep, the deepest restorative stage. You do not fall asleep faster. Your sleep gets deeper. Track with a sleep tracker (Oura, Whoop, Apple Watch) to see the delta sleep increase.
Stress-related sleep disruption
200-300mcg SubQ nightly
2-4 weeks during high-stress periods
DSIP normalizes cortisol rhythm. If your sleep is disrupted by stress (waking at 3am, racing thoughts, light sleep all night), the cortisol regulation effect may help more than the sleep architecture effect.
Stacked with Selank for anxiety + sleep
200mcg DSIP nightly + Selank 250mcg 2x/day
2-4 weeks
DSIP handles the sleep architecture. Selank handles the daytime anxiety. Different mechanisms, complementary effects. Selank modulates GABA/serotonin. DSIP modulates delta wave activity and cortisol.
DSIP Results Timeline
Night 1-3, Adjustment: You may not notice anything the first few nights. DSIP is not a sedative. It works on sleep architecture over multiple nights.
Night 3-7, Sleep deepening: Sleep tracker data starts showing increased deep sleep percentage. You may wake feeling more rested on the same hours. Dreams may become more vivid.
Week 2-4, Full effect: Delta sleep consistently improved. Daytime energy better from more restorative sleep. Cortisol rhythm normalizing. This is the end of a standard cycle. Take 1-2 weeks off.
Frequently Asked Questions About DSIP
What is DSIP?
DSIP (Delta Sleep-Inducing Peptide) is a nine amino acid neuropeptide discovered in 1977 in rabbit brain extracts. It modulates sleep architecture by promoting delta wave (slow-wave) sleep, the deepest and most restorative stage. It also normalizes the cortisol rhythm and has mild analgesic properties. It is not a sedative. It does not make you drowsy or knock you out.
What is the best DSIP dosage?
100-300mcg subcutaneously 30-60 minutes before bed. Start at 100mcg. For a 5mg vial reconstituted with 1mL bacteriostatic water, 100mcg is 2 units and 300mcg is 6 units on a U-100 insulin syringe. Cycle 2-4 weeks on, 1-2 weeks off.
What are the side effects of DSIP?
The side effect profile is remarkably mild. Occasional headache (5%), mild nausea (3%). Some people report vivid dreams, which can be a positive or negative depending on the dream. No significant adverse events in the published literature. No dependency or withdrawal.
How does DSIP work?
DSIP promotes delta wave activity during sleep. Delta waves are the slowest brain waves, associated with the deepest sleep stage (N3/slow-wave sleep). This is where growth hormone is released, tissue repair peaks, and memory consolidation occurs. DSIP also modulates the hypothalamic-pituitary-adrenal axis, helping normalize cortisol secretion patterns.
How do you reconstitute DSIP?
Add 1mL of bacteriostatic water to a 5mg vial. That gives you 5mg per mL (5,000mcg per mL). For a 100mcg dose, draw 2 units. For 200mcg, draw 4 units. For 300mcg, draw 6 units. Swirl gently. Never shake. Refrigerate after reconstitution. Use within 3-4 weeks.
Early research. DSIP was discovered in 1977 in rabbit brain extracts. Small human studies show it modulates sleep architecture, particularly delta (slow-wave) sleep. It also appears to normalize cortisol and modulate pain perception. No large-scale RCTs exist. The research is old and sparse but the mechanism is interesting.
Approval status: Not approved
References
Schoenenberger GA, Monnier M. Characterization of a delta-electroencephalogram (-sleep)-inducing peptide. Proc Natl Acad Sci U S A, 1977. PMID 266744
Schneider-Helmert D, Schoenenberger GA. Effects of DSIP in man. Multifunctional psychophysiological properties besides induction of natural sleep. Neuropsychobiology, 1983. PMID 6316274
Graf MV, Kastin AJ. Delta-sleep-inducing peptide (DSIP): a review. Neurosci Biobehav Rev, 1984. PMID 6382658
Kovalzon VM, Strekalova TV. Delta sleep-inducing peptide (DSIP): a still unresolved riddle. J Neurochem, 2006. PMID 16805836
Storage
Lyophilized: Refrigerate 2-8C or freeze -20C for long-term. Stable as dry powder.
Reconstituted: Refrigerate. Use within 3-4 weeks.
Water: Bacteriostatic water, 1mL per 5mg vial.
Needle: 30-31 gauge, 0.5 inch for SubQ
These statements have not been evaluated by the FDA. This content is for educational purposes only. Consult a healthcare professional before starting any protocol. vialprep sells injection supplies, not compounds.
This page is a community reference, not medical advice. Content reflects what users report, not clinical recommendations. Nothing here is approved for human use unless specifically noted. Always consult a healthcare professional before starting any protocol. vialprep sells injection supplies, not compounds.
