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CALIBERPEPTIDES
DSIP
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DSIP

Deep Sleep

5mg × 10 vialsCognitive & Sleep

10 vials — 12 months supply

Established niche sleep peptide. Consistently recommended in peptide circles for sleep optimization.

$245
= $0.67/day
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What it does

DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring neuromodulator that promotes delta-wave (deep) sleep without acting as a sedative. It modulates sleep architecture by promoting the slow-wave sleep phase where growth hormone release and tissue repair peak. It also normalises cortisol and reduces stress-related sleep disruption.

The key distinction: melatonin signals "time to sleep" — DSIP modulates the quality and depth of sleep itself. It's the difference between falling asleep and sleeping deeply.

Dosage & Protocol

Subcutaneous injection. 100-300mcg per injection, once daily 30-60 minutes before bed. 2-4 week cycles. 10 vials at 5mg provides approximately 12 months.

Duration
12 months
Format
10-vial protocol box
Purity
99%+ (CoA verified)
Delivery
7-14 days worldwide

What to expect

1
Night 1-3: Improved ability to fall asleep. Deeper sleep sensation upon waking. More vivid dreams.
2
Week 1-2: Consistent improvement in sleep quality. Feeling more rested. Possible improvement in daytime stress levels.
3
Week 2-4: Stabilized sleep pattern. Improved overall recovery and wellbeing from better sleep.

Who it's for

Researchers studying sleep architecture and delta-wave sleep promotion
Those with stress-related sleep disruption or poor sleep quality
Athletes focused on recovery through sleep optimisation
Anyone unsatisfied with melatonin who wants to improve sleep depth, not just onset
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Read the full DSIP profile in the Peptide Bible

Dosing protocols, stacking guides, safety data, and research references.

Browse Bible

The research

📄
Human double-blind study in chronic insomniacs: Effects of DSIP on sleep(1299794)
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Comprehensive mechanism review in European Journal of Anaesthesiology(DSIP-EJA)
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DSIP fusion peptide efficacy in insomnia mouse models (Frontiers in Pharmacology 2024)(fphar-2024-1439536)

Safety notes

⚠️Generally well tolerated. No significant adverse effects in published literature.
⚠️Variable response — some users report dramatic improvement, others notice little effect.
⚠️Not a sedative — will not knock you out. Improves sleep quality rather than forcing sleep.
⚠️Limited modern clinical data. Most research from 1980s-2000s.

Pairs well with

Ipamorelin

DSIP promotes deep sleep + Ipamorelin enhances GH release during sleep = synergistic recovery

Low-dose melatonin

Melatonin for sleep onset + DSIP for sleep depth

Complete Your Protocol

Frequently Asked Questions

Start My Deep Sleep

5mg × 10 vials — 12 months supply — $245$0.67/day

Includes Peptide Bible, CoA certificate, and Telegram support