DSIP – Delta Sleep‑Inducing Peptide (5MG)

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What is DSIP – Delta Sleep‑Inducing Peptide (5MG)?

DSIP – Delta Sleep‑Inducing Peptide – is a naturally occurring nonapeptide (9 amino acids) originally isolated from the cerebral venous blood of rabbits in the 1970s. Its sequence is broadly given as: Trp–Ala–Gly–Gly–Asp–Ala–Ser–Gly–Glu. DSIP has been researched for its possible role in promoting slow-wave (delta) sleep, modulating stress response, growth hormone release, and other neuro-endocrine functions. However, the full physiological role of DSIP remains unresolved, including the natural precursor, receptor(s), and precise mechanisms.
Structure of Chemicals iron peptides

Chemical Structure of DSIP – Delta Sleep‑Inducing Peptide (5MG)

  • Amino-acid sequence (common representation): Trp–Ala–Gly–Gly–Asp–Ala–Ser–Gly–Glu

  • Molecular formula: approximately C₃₅H₄₈N₁₀O₁₅

  • Molecular weight: ~848.8 Da (varies slightly by source)

  • Discovery note: It is often described as a cyclic or linear nonapeptide depending on variant, but the canonical structure used in studies is linear.

  • Stability / half-life: The peptide has a very short plasma half-life in humans (often reported ~7-15 minutes) and is rapidly degraded by peptidases unless bound or modified.

Medical iron peptides

What Are the Effects of DSIP – Delta Sleep‑Inducing Peptide (5MG)?

Sleep modulation & growth hormone linkage

  • In animal models, DSIP administration was associated with increased slow-wave sleep (SWS) and increased growth hormone release following sleep deprivation.

  • In a human study, DSIP reduced sleep latency and improved sleep efficiency in chronic insomniac patients vs placebo, although the statistical significance was weak and the effect modest.

  • The original hypothesis that DSIP is a “sleep-promoting factor” remains only partially supported: some studies show effect, others fail to replicate strong sleep-inducing benefits.

Neuroendocrine & stress-response roles

  • DSIP has been shown to impact the hypothalamic-pituitary axis and stress hormone regulation (e.g., ACTH, cortisol) in animal models.

  • It exhibits neuroprotective properties: in rat stroke models, DSIP treated animals recovered motor function faster and showed reduced oxidative injury in brain tissue.

Other research observations

  • Potential analgesic and anticonvulsant effects in animal studies.

  • Some evidence suggests DSIP may influence body-temperature regulation, blood pressure, and metabolism, though these are less well characterised.


Summary of your found content

The content you found is largely correct:

  • Sequence and origin of DSIP are accurate.

  • Effects you described (sleep modulation, neuro-endocrine modulation) align with established research.
    What needed improvement:

  • Emphasis on uncertainty and limited replication of sleep-promoting claims.

  • Specification of molecular weight / formula should include “approximate” and highlight variation among sources.

  • Clarification that many effects are from animal/in vitro models and that human data is limited.


Use-Wise Notes

  • This peptide is for research use only. It is not approved for therapeutic or dietary use.

  • Quality and storage: It should be supplied as high-purity lyophilised powder, stored at ≤ −20°C (or per supplier instructions), protected from moisture/light.

  • When listing product details, it is advisable to include: sequence, molecular weight/approx range, intended research applications, purity specification, storage instructions, and legal disclaimer.

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Drew Hahn 2025-09-09

I decided to try something new with…

I decided to try something new with Iron Peptides, and it has already been very beneficial. Since starting, I’ve noticed many positive effects. I feel motivated to continue, and I’m confident I’ve found the right company to trust on my personal journey—Iron Peptides.

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yari 2025-09-07

The products

The products, services and information is exceptional

Karla Rodriguez 2025-09-07

Fist time trying peptides to see what…

Fist time trying peptides to see what all the hype was about. And. I AM HOOKED! Have never felt. Better. 5 months after my neck surgery and I feel amazing. Recovery was easy and I have all my strength back!!

DH
Drew Hahn 2025-09-09

I decided to try something new with…

I decided to try something new with Iron Peptides, and it has already been very beneficial. Since starting, I’ve noticed many positive effects. I feel motivated to continue, and I’m confident I’ve found the right company to trust on my personal journey—Iron Peptides.

y
yari 2025-09-07

The products

The products, services and information is exceptional

Karla Rodriguez 2025-09-07

Fist time trying peptides to see what…

Fist time trying peptides to see what all the hype was about. And. I AM HOOKED! Have never felt. Better. 5 months after my neck surgery and I feel amazing. Recovery was easy and I have all my strength back!!

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Buy DSIP for research purposes. Premium-quality peptide designed for scientific studies on sleep regulation and circadian rhythms.DSIP – Delta Sleep‑Inducing Peptide (5MG)
$79.99

Availability: 42 in stock

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