For research use only. Not for human consumption. Not medical advice — consult a licensed clinician.

Nootropic / Cognitive

DSIP

Also known as: Delta Sleep-Inducing Peptide

DSIP is a nonapeptide (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) isolated in 1977 from the cerebral blood of rabbits during electrically induced sleep. Mechanism remains uncertain and the clinical evidence base is weak. Not FDA-approved — research use only.

Real-time market data

Pricing for DSIP

Live vendor pricing, normalized to $/mg so sizes compare fairly — fused with each seller's Merit trust score and latest independent COA purity. Prices refresh daily.

Independent evidence

COAs for DSIP

58 third-party tests across 16 vendors. Each card links to the full report.

All 58 COAs for DSIP →
Measured purity 98.1%–100.0% across 36 COAs
Measured purity over time
Aggregated · 3rd-party listing
99.00 %
May 2026
Ethos Analytics · HPLC

For

DSIP

by OROS Research· batch OR-LPDSP5-526-B2

Aggregated · 3rd-party listing
99.04 %
May 2026
ILS Labs

For

DSIP

by Ion Peptide· batch DS5-05042026

Aggregated · 3rd-party listing
99.76 %
Apr 2026
MDx BioAnalytical Laboratory · HPLC

For

DSIP

by BioLongevity Labs· batch 8-3-4G121

Aggregated · 3rd-party listing
99.52 %
Apr 2026
Biogenica Labs · HPLC

For

DSIP

by Amino Club· batch DSP0001

Aggregated · 3rd-party listing
99.94 %
Apr 2026
Kovera Labs

For

DSIP

by Ion Peptide· batch DSIP10-04022026

Aggregated · 3rd-party listing
99.06 %
Apr 2026
Janoshik Analytical · HPLC

For

DSIP

by Verified Peptides· batch DS04260610F

Aggregated · 3rd-party listing
99.55 %
Mar 2026
ILS Labs

For

DSIP

by NG Peptide· batch DS01

Aggregated · 3rd-party listing
99.02 %
Feb 2026
Janoshik Analytical · HPLC

For

DSIP

by Peptidegurus· batch 1st Feb 2026

Aggregated · 3rd-party listing
99.75 %
Feb 2026
MDx BioAnalytical Laboratory · HPLC

For

DSIP

by BioLongevity Labs· batch QC260725

Aggregated · 3rd-party listing
99.82 %
Feb 2026
BioRegen · HPLC

For

DSIP

by BioLongevity Labs· batch 8-3-46035

Aggregated · 3rd-party listing
99.78 %
Jan 2026
MDx BioAnalytical Laboratory · HPLC

For

DSIP

by BioLongevity Labs· batch cmojb6vyh016lkirxk9qjkp66

Aggregated · 3rd-party listing
99.03 %
Jan 2026
Janoshik Analytical · HPLC

For

DSIP

by Verified Peptides· batch 12-25-0510E

Aggregated · 3rd-party listing
99.55 %
Dec 2025
Freedom Diagnostics · HPLC

For

DSIP

by Simple Peptide· batch DSIP12302025-J

Aggregated · 3rd-party listing
99.53 %
Dec 2025
Freedom Diagnostics · HPLC

For

DSIP

by Simple Peptide· batch cmp9xkack006r9trxzfig4kbp

Aggregated · 3rd-party listing
98.43 %
Dec 2025
Freedom Diagnostics

For

DSIP

by Ion Peptide· batch DS5-122825

Aggregated · 3rd-party listing
99.87 %
Dec 2025
BioRegen

For

DSIP

by Real Peptides

Aggregated · 3rd-party listing
99.03 %
Nov 2025
Freedom Diagnostics

For

DSIP

by Ion Peptide· batch DP1-1125

Aggregated · 3rd-party listing
99.05 %
Nov 2025
Janoshik Analytical · HPLC

For

DSIP

by Profound Aminos· batch cmojb854i01gykirxx50qqlnz

Aggregated · 3rd-party listing
99.12 %
Nov 2025
Janoshik Analytical

For

DSIP

by Moglabs· batch dsp001

Aggregated · 3rd-party listing
98.09 %
Oct 2025
Freedom Diagnostics

For

DSIP

by Ion Peptide· batch DP15-1025

Aggregated · 3rd-party listing
99.38 %
Oct 2025
Freedom Diagnostics · HPLC

For

DSIP

by Glacier Aminos· batch DSP592502

Aggregated · 3rd-party listing
99.23 %
Oct 2025
Freedom Diagnostics · HPLC

For

DSIP

by Glacier Aminos· batch DSP592501

Aggregated · 3rd-party listing
99.20 %
Oct 2025
Freedom Diagnostics · HPLC

For

DSIP

by Simple Peptide· batch DSIP10202025-J

Aggregated · 3rd-party listing
99.80 %
Oct 2025
MDx BioAnalytical Laboratory · HPLC

For

DSIP

by BioLongevity Labs· batch 251535

Research depth

13 citations indexed for DSIP

All research on DSIP →

review · 2026

Peptide-Based Approaches for Pain Relief and Healing in Wounds

A wound has been defined as a disruption of tissue integrity. Pain, bleeding, and the risk of infection are inherent features of wounds, while chronic wounds are often accompanied by serous exudate.

Study · 2026

Predicting Sanitation Behaviors: Comparison of Willingness to Pay Techniques for Sanitation Services in Urban Dhaka, Bangladesh

Improving urban sanitation requires understanding user preferences and willingness to pay (WTP) for sewer connections. This study evaluates WTP for sanitation attributes in low-income communities (LICs) of Dhaka, Bangladesh, comparing contingent valuation (CVM) and hedonic pricing (HPM) methods.

Study · 2026

Ion-Pair Speciation in Aqueous Alkali Fluorides from Nuclear Magnetic Resonance of <sup>19</sup>F

We demonstrate that a combination of multiscale modeling and experimental 19 F NMR can be used to examine the molecular details of how ion-pair speciation changes with temperature and molality.

review · 2026

Therapeutic Peptides in Aesthetic, Metabolic and Endocrine Conditions: Effects, Safety, Clinical Applications, and Future Perspectives

Therapeutic peptides are short chains of amino acids used to treat metabolic and endocrine conditions such as obesity and type 2 diabetes.

Study · 2025

Equity and Social Care in Medicaid through Community Care Hubs

Medicaid serves vulnerable populations that experience deep health inequities and significant health-related social needs. In recent years, reforms to Medicaid have sought to respond to those needs, with mixed results.

Study · 2025

Synergies from a distance: Inspirations from the struggles of Dr James M Krueger

In this article for Dr Krueger's Festschrift, I trace how his early career influenced many aspects in the fields of sleep, neuroimmunology, and the microbiome. Mostly, however, I trace how his career and interests intertwined with those of Abba J.