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.
Who's worth your money for DSIP
Every current seller, ranked by independent evidence — Merit Score, latest COA purity, and live $/mg (size-normalized). Prices refresh daily. Rankings are never paid.
Top Merit pick
Highest Merit Score (99) of 25 scored sellers
$59.99 · 10mg · 99.2% purity
Best value
Lowest $/mg among scored sellers
— · 5mg · 99.7% purity
Most tested
15 independent COAs on file
$49.00 · 10mg · 99.1% purity
Average price
$6.66/mg
Sellers
75
45-day trend
+0.3%
64 of 75 sellers have a current price· 12 stale hidden· 27 unverified hidden
Top Merit pick
🇺🇸 Glacier Aminos99✓ verified at source · 23h ago
$6.00/mg -9.9% vs avg$59.99
10mg
- 🇺🇸 Peptide Partners99
✓ verified at source · 23h ago
$7.50/mg +12.6% vs avg$75.00
10mg
- 🇺🇸 Moglabs96
via Disclosed Labs · 23h ago
$5.60/mg -15.9% vs avg$28.00
5mg
- 🇺🇸 BioLongevity Labs96
✓ verified at source · 23h ago
$11.19/mg +68% vs avg$55.97
5mg
- 🇺🇸 Orbitrex Peptides95
via Disclosed Labs · 23h ago
$4.00/mg -40% vs avg$39.99
10mg
- 🇺🇸 Profound Aminos95
via Disclosed Labs · 23h ago
$6.50/mg -2.4% vs avg$65.00
10mg
- 🇺🇸 Licensed Peptides95
✓ verified at source · 23h ago
$10.80/mg +62.1% vs avg$53.99
5mg
- 🇺🇸 Ignite Peptides92
✓ verified at source · 23h ago
$6.00/mg -9.9% vs avg$30.00
5mg
- 🇺🇸 Hydro Research Peptides91
✓ verified at source · 23h ago
$9.00/mg +35.1% vs avg$45.00
5mg
- 🇺🇸 Peptide Plugs89
✓ verified at source · 23h ago
$4.00/mg -40% vs avg$40.00
10mg
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.
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About DSIP
CAS
62568-57-4
Molecular formula
C35H48N10O15
Sequence
WAGGDASGE
Typical dose range
100-250 mcg/day subcutaneous, administered ~3 hours before bedtime; some studies used 25 nmol/kg (~21.4 mcg/kg)
Half-life
~15 minutes in vitro; ~4-5 minutes in animal studies; human elimination data limited
COAs for DSIP
107 third-party tests across 26 vendors. Each card links to the full report.
For
DSIP
by Ignite Peptides· batch White Cap
For
DSIP
by NG Peptide· batch DSIP10-02
For
DSIP
by Peptide Plugs· batch 142-03-DK
For
DSIP
by Blank Peptides· batch B-4349569-P
For
DSIP
by OROS Research· batch OR-LPDSP5-526-B2
For
DSIP
by Ion Peptide· batch DS5-05042026
For
DSIP
by Ion Peptide· batch DSA-05042026
For
DSIP - 5mg
by Ion Peptide· batch COA-2026-MHKCXP
For
DSIP
by Peptide Partners· batch DS202605
For
DSIP
by BioLongevity Labs· batch 8-3-4G121
For
DSIP
by Amino Club· batch DSP0001
For
DSIP
by Ion Peptide· batch DSIP10-04022026
For
Ion Peptide DSIP
by Ion Peptide· batch DSIP10-04022026
For
DSIP
by Verified Peptides· batch DS04260610F
For
DSIP
by NG Peptide· batch DS01
For
DSIP
by Orbitrex Peptides· batch DSIP100326
For
DSIP
by Licensed Peptides· batch 032520261
For
DSIP
by EZ Peptides· batch EZP-DSIP1003062026-02
For
DSIP
by EZ Peptides· batch EZP-DSIP1003062026-02
For
DSIP
by Licensed Peptides· batch 032520261
For
DSIP
by Peptidegurus· batch 1st Feb 2026
For
DSIP
by BioLongevity Labs· batch QC260725
For
DSIP
by Ion Peptide· batch DSIP5-02122026
For
DSIP
by BioLongevity Labs· batch 8-3-46035
12 citations indexed for 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.