DSIP
Delta Sleep-Inducing Peptide — studied for sleep, stress and the body clock.
Also listed as Delta Sleep Inducing Peptide, Delta Sleep Peptide.
Peptide Compare tracked 52 vendors selling DSIP on 10 Oct 2026. The cheapest in-stock 5 mg vial is $3.40 per mg at Eros Peptides, 55% under the $7.50 median. Prices are scraped from vendor sites; trust scores come from Finnrick blind tests.
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Best value right now · 5 mg
Eros Peptides
IN STOCKTRUST 6.9
Per mg55% under the $7.50 median
Vial price5 mg · verified Oct 10
Avg per mg · 5 mg
$8.96−35.5%
Ranged $7.10 – $13.90 across 52 vendorsCompare 35 vendors · 5 mg
Across all sizes, verified in-stock listings run $17.00 to $249.50 from 31 vendors.
VendorStock
23
Welli LabsUNTESTED · OUT
$5.20$25.99
25
Good ScienceUNTESTED · OUT · 20% OFF
$5.60$28.00$35.00
27
Pepvida LabsUNTESTED · OUT
$7.00$35.00
28
Solution PeptidesUNTESTED · OUT
$7.00$35.00
30
Genetic PeptideUNTESTED · OUT · 20% OFF
$8.00$40.00$50.00
31
Royal PeptidesUNTESTED · OUT
$9.00$45.00
33
Real PeptidesUNTESTED · OUT
$10.00$50.00
35
Risynth BioTRUST 9.1 · OUT
$11.00$55.00
Showing 8 of 35 vendors · 27 more from $5.20/mg
DSIP prices verified Oct 10, 2026
$3.40/mgEros Peptides · $17.00
Buy best priceSee how DSIP moved against the rest of the catalogue in the Peptide Price Index: median price per mg now versus 30 and 90 days ago, every tracked peptide, with a CSV.
DSIP price by vial size
| Vial size | Lowest per mg | Vial price | Vendor |
|---|---|---|---|
| 2 mg | $14.99 | $29.99 | Loti Labs3 vendors carry it |
| 5 mg | $3.40 | $17.00 | Eros Peptides35 vendors carry it |
| 10 mg | $3.15 | $31.54 | Modern Research22 vendors carry it |
| 15 mg | $4.00 | $59.99 | Amino Club3 vendors carry it |
| Other | none verified in stock | 1 vendor carries it |
Verified 10 Oct 2026. Lowest figures are in-stock listings checked within the last week, with any coupon applied; a size with none says so.
Price movement · 30 days
0%median per mg, all sizes
Cheapest ever recorded: $2.94/mg on Sep 4. Today is 7.3% above that low.See our top-ranked DSIP vendors
Ranked by Finnrick trust score, independent lab testing, and price.
Compare DSIP head-to-head
All peptide comparisonsQuick Summary
A nonapeptide first isolated from rabbit brain, studied in a handful of small sleep trials in the 1980s and 1990s with conflicting results. Available from 52 vendors, priced from $17.00 to $249.50.
Research: The positive studies are small and old, and all were in insomniac or narcoleptic patients rather than general sleepers: Schneider-Helmert 1981 (PMID 6895513, n=6, double-blind crossover), Monti 1987 (PMID 3583493) and Bes 1992 (PMID 1299794, n=16). Spaeth-Schwalbe 1995 (PMID 7777652) found no effect. Natural DSIP has a half-life of about 15 minutes in vivo.
Side effects: No adverse event table was verified for this page
Research compoundConflicting evidence from small old studies; not approved for any indication
- 42 of 52 vendors currently have it in stock
- Highest-rated vendor: Risynth Bio (9.1 Finnrick score)
- Most common vial size: 5mg
- Category: Cognitive / Neuro — Nootropic and neuroprotective peptides
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