DSIP Protocol: Complete Cycling & Dosing Guide
Delta Sleep-Inducing Peptide (DSIP) is a 9-amino acid neuropeptide that functions primarily as a sleep-promoting and stress-modulating agent. Originally isolated from cerebral venous blood, DSIP works by influencing GABA-ergic and opioidergic neurotransmission while modulating the hypothalamic-pituitary-adrenal (HPA) axis—the body's central stress-response system.
Unlike many peptides with unclear mechanisms, DSIP's action is well-characterized: it reduces baseline corticosterone levels, modulates ACTH release, and exhibits antioxidant properties that may protect mitochondrial function. These mechanisms make it suitable for sleep optimization, stress recovery, and potentially enhanced metabolic recovery from training.
Key characteristics:
- Dosing range: 100–600 mcg daily (injection) or 200–500 mcg daily (nasal)
- Half-life: Relatively short; once-daily administration is standard
- Onset: Effects typically appear within 3–7 days of consistent dosing
- Safety profile: Generally favorable in short-term use; long-term human data is limited
- Cost: $25–$80 per month (among the most affordable peptides)
The standard DSIP protocol is designed for sleep quality and HPA axis modulation in individuals without specific recovery or performance goals.
Injection (preferred for consistency and reliability):
- Starting dose: 100–150 mcg once daily
- Standard dose: 200–300 mcg once daily
- Advanced dose: 400–600 mcg once daily
Nasal (convenient but less consistent absorption):
- Starting dose: 200 mcg once daily
- Standard dose: 300–400 mcg once daily
- Advanced dose: 500 mcg once daily
Administer DSIP 30–60 minutes before intended sleep, or in the morning if using for daytime stress modulation and HPA axis support. Evening dosing is most common because DSIP's primary mechanism involves promoting slow-wave sleep.
Standard 8-week cycle:
- Weeks 1–2: 100–150 mcg daily (assessment phase)
- Weeks 3–6: 200–300 mcg daily (main protocol)
- Weeks 7–8: Taper or maintain at lower dose (200 mcg) to assess dependency
- Off-cycle: 2–4 weeks minimum before restarting
This structure allows you to assess tolerance, identify your optimal dose, and determine whether cycling is necessary for your physiology.
Goal: Improve sleep latency, total sleep time, and slow-wave sleep percentage.
Dosing:
- Start: 150 mcg daily
- Weeks 2–4: 250–300 mcg daily
- Weeks 5–8: 300–400 mcg daily (if tolerated and if deeper effects are desired)
Timing: 45–60 minutes before bed.
Cycle: 8–10 weeks on, 3–4 weeks off.
Adjuncts: Combine with consistent sleep hygiene. DSIP's effects compound when sleep timing is regular. Avoid caffeine after 2 PM. Consider pairing with magnesium glycinate (300–400 mg) 60 minutes before bed for additive sleep support.
Expected outcome: Sleep latency reduction (10–20 minutes) within 2–3 weeks; total sleep time increase of 30–90 minutes by week 4; subjective sleep quality improvements by week 5.
Goal: Reduce baseline cortisol and ACTH dysregulation, accelerate recovery from chronic stress or overtraining.
Dosing:
- Start: 100–125 mcg daily
- Weeks 2–4: 200–250 mcg daily
- Weeks 5–12: 250–350 mcg daily
Timing: Morning (upon waking) for HPA axis modulation. Some users add a second 100 mcg evening dose if cortisol is severely elevated (not recommended without testing).
Cycle: 10–12 weeks on, 4 weeks off. This longer cycle is appropriate for HPA axis rebalancing, which occurs over weeks 6–10 of consistent dosing.
Adjuncts: Combine with stress management (meditation, yoga, breathwork), consistent sleep schedule, and reduced training volume during the first 3 weeks of the protocol. Consider L-theanine (100–200 mg daily) for additional anxiolytic support without sedation.
Expected outcome: Noticeable reduction in anxiety or racing thoughts within 7–10 days; improved sleep quality within 2 weeks; subjective stress resilience improvement by week 4; energy recovery by week 6–8.
Goal: Enhance recovery speed, reduce fatigue, optimize sleep-dependent adaptation, and support mitochondrial ATP production efficiency.
Dosing:
- Start: 150 mcg daily
- Weeks 2–6: 300–350 mcg daily
- Weeks 7–10: 350–450 mcg daily (if deep recovery is prioritized)
Timing: Evening (45–60 minutes before bed) to maximize sleep-dependent recovery and allow mitochondrial restoration during sleep.
Cycle: 10 weeks on, 4–6 weeks off. The longer off-cycle allows full assessment of training adaptations made during the DSIP cycle.
Adjuncts: Pair with adequate protein (1.6–2.0 g/kg), optimized sleep (7–9 hours), and antioxidant support (vitamin C, 500–1000 mg; vitamin E, 400 IU). Consider combining with omega-3 fatty acids (2–3 g EPA+DHA daily) for additional mitochondrial and anti-inflammatory support.
Expected outcome: Reduced muscle soreness within 3–5 days; improved sleep quality by day 7–10; noticeable acceleration of strength gains and work capacity recovery by week 4; subjective energy improvements by week 6.
Goal: Support long-term healthspan, reduce age-related decline, optimize antioxidant status and mitochondrial function.
Dosing:
- Maintenance: 200–250 mcg daily
- Optional enhancement (ages 50+): 300 mcg daily
Timing: Evening, 60 minutes before sleep.
Cycle: 12 weeks on, 4–6 weeks off (longer on-cycle supports slower-acting longevity mechanisms). Alternatively, some users maintain year-round low-dose protocols (200 mcg daily) with shorter 2-week breaks every 12 weeks.
Adjuncts: Combine with established longevity protocols: caloric consistency or mild caloric restriction, consistent resistance training, NAD+ precursors (NMN or NR, 250–500 mg), resveratrol (150–500 mg), and cardiovascular exercise. Sleep consistency is critical—target 7–9 hours nightly.
Expected outcome: Subjective energy and physical resilience improvements within 2–3 weeks; improved sleep quality and recovery by week 4; potential improvements in skin appearance and joint mobility by week 8–10; no direct longevity measurement possible in short-term protocols, but biomarkers (resting heart rate, grip strength, inflammatory markers) may show favorable changes by 10–12 weeks.
1. Reconstitution (first use only)
- Remove DSIP vial and bacteriostatic water from storage
- Sanitize vial stoppers with an alcohol wipe; allow to air-dry
- Draw bacteriostatic water into a sterile syringe (typically 1 mL per 5 mg DSIP)
- Slowly inject water into DSIP vial, angling the needle to allow water to trickle down the vial wall (prevents foaming)
- Gently roll vial (do not shake vigorously) for 30–60 seconds until fully dissolved
- Solution should be clear or slightly cloudy; if cloudy persists after 2 minutes, discard
- Store reconstituted DSIP in a refrigerator (2–8°C) for up to 30 days
2. Dose preparation
- Calculate your dose volume using the concentration:
- Example: 5 mg DSIP reconstituted in 1 mL = 5 mg/mL concentration
- For a 250 mcg dose, draw 0.05 mL (50 units on an insulin syringe)
- Use a sterile 0.5 mL insulin syringe for precise sub-100 mcg dosing
- Use a 1 mL syringe for 200+ mcg doses
- Always use a fresh sterile needle for each injection
3. Injection site selection
- Preferred sites: lower abdomen (pinch 2–3 inches below belly button), upper thigh, or upper arm
- Rotate sites to prevent irritation or lipohypertrophy
- Maintain a minimum 1-inch distance between injection sites on the same day
- Mark or track injection sites in a log to ensure 4–7 day rotation before reusing a site
4. Injection procedure
- Sanitize the injection site with an alcohol wipe; allow to air-dry (critical to prevent infection)
- Pinch a fold of skin at the injection site
- Insert the needle at a 45–90-degree angle into the subcutaneous layer (not into muscle)
- Inject slowly over 5 seconds to minimize discomfort and allow even distribution
- Withdraw needle and apply light pressure for 5 seconds
- Do not massage the injection site (massage can increase systemic absorption and may cause flushing)
5. Storage
- Reconstituted DSIP: refrigerate at 2–8°C for up to 30 days
- Unreconstituted DSIP: store in a cool, dark place (avoid direct sunlight) at room temperature or refrigerated; stable for 12+ months
- Do not freeze
- Keep away from heat sources and direct light
1. Preparation
- Reconstitute DSIP as above using 1 mL bacteriostatic water per 5 mg vial
- Draw your dose volume into a tuberculin or 1 mL syringe
- Attach a nasal atomizer (available online; do not use a needled syringe for intranasal administration)
2. Administration
- Gently blow nose to clear nasal passages
- Sit upright or tilt head slightly back
- Insert atomizer nozzle into one nostril
- Depress the plunger firmly to create a fine mist
- Repeat in the other nostril if your dose exceeds what a single atomizer holds
- Remain upright for 2–3 minutes to allow absorption
- Do not lie down immediately after administration
3. Advantages and disadvantages
- Advantage: Non-invasive; avoids injection site reactions
- Disadvantage: Absorption is variable and less consistent than subcutaneous injection; may be suitable for lower doses (200–400 mcg) but less reliable for higher doses
| Week | Daily Dose (mcg) | Timing | Notes |
|---|
| 1 | 150 | 60 min pre-bed | Assessment phase; observe baseline sleep quality |
| 2 | 150 | 60 min pre-bed | Record sleep metrics; adjust timing if needed |
| 3 | 250 | 60 min pre-bed | Main protocol begins; expect sleep latency improvement |
| 4 | 250 | 60 min pre-bed | Consolidate benefits; monitor for side effects |
| 5 | 300 | 60 min pre-bed | Optional increase if sleep quality plateau; assess tolerance |
| 6 | 300 | 60 min pre-bed | Peak protocol; expect maximum slow-wave sleep |
| 7 | 250 | 60 min pre-bed | Taper; begin reducing dose |
| 8 | 150 | 60 min pre-bed | Final week; lower dose to assess dependency |
| Off | 0 | — | 3–4 week break; reassess natural sleep quality |
- Mild drowsiness or "heaviness" in the evening (especially at higher doses)
- Possible vivid dreams on nights 2–5
- No significant sleep time changes yet
- Reduced sleep latency (falling asleep 10–15 minutes faster than baseline)
- Improved subjective sleep quality and morning recovery
- Reduced nighttime awakenings
- Possible mild headache on days 2–4 of starting dose (usually transient)
- Increased total sleep time (30–90 minute increase is common)
- Improved slow-wave sleep percentage (if measured via sleep tracker or polysomnography)
- Reduced daytime anxiety and improved stress resilience
- Enhanced recovery from training (reduced muscle soreness)
- Possible increase in dream vividness or recall
- Stabilization of circadian rhythm if prior disruption existed
- Cumulative HPA axis modulation (reduced baseline anxiety or emotional reactivity)
- Sustained improvement in sleep efficiency
- For training protocols: noticeable improvements in strength gains and work capacity
- Possible temporary rebound insomnia or return to baseline sleep quality (usually mild and brief, 3–7 days)
- Gradual return to pre-DSIP baseline sleep and stress resilience
- No long-term effects observed from discontinuation
Mistake: Starting at 400–600 mcg on day one.
Result: Excessive grogginess, daytime sedation carry-over, vivid dreams that disrupt sleep, and potential intolerance leading to discontinuation.
Fix: Always start at 100–150 mcg and escalate by 50–100 mcg every 3–4 days if needed. Most users achieve desired effects at 200–300 mcg.
Mistake: Injecting into muscle (intramuscular) instead of subcutaneous tissue; injecting too quickly; massaging the injection site afterward.
Result: Increased systemic absorption, higher incidence of side effects, possible bruising, and inconsistent dosing effects.
Fix: Inject into the subcutaneous layer (pinch skin, insert at 45–90 degrees, inject slowly over 5 seconds). Do not massage. Rotate sites consistently.
Mistake: Taking DSIP at irregular times (e.g., Monday at 8 PM, Tuesday at 10 PM, Wednesday skipped).
Result: Reduced efficacy because DSIP requires consistent daily administration to modulate HPA axis and sleep-wake cycles. Peptides are time-sensitive and circadian-dependent.
Fix: Set a daily alarm. Inject or inhale at the same time every evening (within ±30 minutes). Consistency is more important than perfection.
Mistake: Using a generic 300 mcg dose without assessing individual tolerance; assuming everyone responds identically.
Result: Some individuals experience excessive sedation or side effects at standard doses; others require higher doses for efficacy. Without titration, users either under-dose or over-dose.
Fix: Always titrate upward from a low dose. Track sleep quality and side effects in a simple spreadsheet. Adjust dose based on individual response.
Mistake: Combining DSIP with high-dose magnesium, melatonin, glycine, L-theanine, and herbal adaptogens simultaneously.
Result: Additive sedation, grogginess, and inability to isolate which agent is responsible for benefits or side effects.
Fix: Use DSIP as a standalone protocol for the first 4 weeks. Add secondary agents (e.g., magnesium) only if needed. Test one addition at a time with a 7-day observation window.
Mistake: Running DSIP continuously for 6