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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.

Average price

$6.74/mg

range $0.00–$28.00/mg

Sellers

72

from $0.00

45-day trend

+1.7%

vs 45-day avg $/mg

65 of 72 sellers have a current price· 40 stale listings hidden (not seen in 7 days)

Prices observed from public storefronts (last 24h), normalized to $/mg. "Evidence" is Merit's 0–100 Merit Score, derived only from observable verification evidence (methodology on /about); "Purity" is the latest independent COA. Some buy links are affiliate links — Merit may earn a commission at no extra cost to you, and where a vendor offers one, the code shown gets you a discount at their checkout. Affiliate status never affects price data, ranking, or the Merit Score (full policy on /disclosure). Research use only.

Independent evidence

COAs for DSIP

105 third-party tests across 24 vendors. Each card links to the full report.

All 105 COAs for DSIP →
Measured purity 98.1%–100.0% across 71 COAs
Measured purity over time
Aggregated · 3rd-party listing
99.87 %
Jul 2026
ILS Labs Strong

For

DSIP

by NG Peptide· batch DSIP10-02

Aggregated · 3rd-party listing
99.48 %
Jun 2026
Freedom Diagnostics Moderate

For

DSIP

by Peptide Plugs· batch 142-03-DK

Aggregated · 3rd-party listing
99.36 %
May 2026
Horizon Analytical

For

DSIP

by Blank Peptides· batch B-4349569-P

Aggregated · 3rd-party listing
99.00 %
May 2026
Ethos Analytics Strong · HPLC

For

DSIP

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

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

For

DSIP

by Ion Peptide· batch DS5-05042026

✓ Vendor-published
99.04 %
May 2026
ILS Laboratories

For

DSIP

by Ion Peptide· batch DSA-05042026

COA on file
✓ Vendor-published
99.02 %
May 2026
ILS Laboratories

For

DSIP - 5mg

by Ion Peptide· batch COA-2026-MHKCXP

COA on file
✓ Vendor-published
99.81 %
May 2026
Kovera Labs

For

DSIP

by Peptide Partners· batch DS202605

COA on file
Aggregated · 3rd-party listing
99.76 %
Apr 2026
MDx BioAnalytical Laboratory Strong · 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

✓ Vendor-published
99.94 %
Apr 2026
Kovera Labs

For

Ion Peptide DSIP

by Ion Peptide· batch DSIP10-04022026

COA on file
Aggregated · 3rd-party listing
99.06 %
Apr 2026
Janoshik Analytical Limited · HPLC

For

DSIP

by Verified Peptides· batch DS04260610F

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

For

DSIP

by NG Peptide· batch DS01

Aggregated · 3rd-party listing
99.47 %
Mar 2026
Vanguard Laboratory Strong

For

DSIP

by Orbitrex Peptides· batch DSIP100326

✓ Vendor-published
98.82 %
Mar 2026
Vanguard Laboratory Strong

For

DSIP

by Licensed Peptides· batch 032520261

COA on file
Aggregated · 3rd-party listing
98.38 %
Mar 2026
Janoshik Analytical Limited

For

DSIP

by EZ Peptides· batch EZP-DSIP1003062026-02

✓ Vendor-published
98.38 %
Mar 2026
Janoshik Analytical Limited

For

DSIP

by EZ Peptides· batch EZP-DSIP1003062026-02

COA on file
Aggregated · 3rd-party listing
98.82 %
Mar 2026
Vanguard Laboratory Strong

For

DSIP

by Licensed Peptides· batch 032520261

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

For

DSIP

by Peptidegurus· batch 1st Feb 2026

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

For

DSIP

by BioLongevity Labs· batch QC260725

✓ Vendor-published
99.40 %
Feb 2026
Analytical Formulations, Inc.

For

DSIP

by Ion Peptide· batch DSIP5-02122026

COA on file
Aggregated · 3rd-party listing
99.82 %
Feb 2026
BioRegen Moderate · HPLC

For

DSIP

by BioLongevity Labs· batch 8-3-46035

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

For

DSIP

by BioLongevity Labs· batch cmojb6vyh016lkirxk9qjkp66

Research depth

12 citations indexed for DSIP

All research on DSIP →

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.

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.

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.