Best DSIP Vendors (2026)
Where to buy DSIP (also sold as Delta sleep-inducing peptide): the 28 vendors below are the ones we have a dated product-page price for, ranked on documentation first and price second. Nothing here is typed from memory — every number links to a date.
Research use only. Compound Review scores vendors on documentation — laboratory certificates, lot records, pricing and company identity. Nothing on this page is guidance on human or veterinary use, dosing or health outcomes.
- 1Purgo Labs10/101 certificate verified at the lab10mg vial$44.99−30%$31.49with code
- 22 certificates verified at the lab10mg vial$30.00−20%$24.00with code
- 3Oneday Compounds10/101 certificate verified at the lab10mg vial$44.99−37%$28.34sale $31.49, then code
- 4Peptide Giants10/101 certificate verified at the lab10mg vial$55.00−38%$34.20sale $38.00, then code
- 5Ameano Peptides9/101 certificate verified at the lab10mg vial$58.00−10%$52.20with code
- 6Snap Peptides9/101 certificate verified at the lab5mg vial$30.00−10%$27.00with code
- Peptide Partners7/102 certificates verified at the labprice read 24 Octfree account needed to see the store5mg vial$37.50−10%$33.75with code
- PS Peptides8/102 certificates verified at the labprice read 5 Nov10mg vial$54.99−10%$49.49with code
Show the other 8 partners and their codes
- 7ezPeps9/101 certificate verified at the lab10mg vial$49.99−20%$39.99with code
- 9Amplified Labs8/101 certificate verified at the lab5mg vial$30.00−15%$25.50with code
- 101 certificate verified at the lab10mg vial$35.00−10%$31.50with code
- 11ZC Labs7/101 certificate verified at the lab10mg vial$29.99−10%$26.99with code
- 13GigaCompounds7/101 certificate opened (vendor-hosted)5mg vial$35.00−10%$31.50with code
- 14Arizen BioLabs6/101 certificate opened (vendor-hosted)10mg vial$49.99−37%$31.49sale $34.99, then code
- 151 certificate opened (vendor-hosted)5mg vial$39.99−55%$18.00sale $20.00, then code
- 16no certificate opened yet5mg vial$59.99−15%$51.29sale $53.99, then code
- MyPurePeptide10/10 · 5 Nov$3/mg$30 list · 10mg$24 with code
- Oneday Compounds10/10 · 8 Nov$3.15/mg$31.49 list · 10mg$28.34 with code
- Peptide Giants10/10 · 5 Nov$3.80/mg$38 list · 10mg$34.20 with code
- Purgo Labs10/10 · 8 Nov$4.50/mg$44.99 list · 10mg$31.49 with code
Per-milligram price is list price over labelled milligrams; it says nothing about what is in the vial. Code prices are list × (1 − the code's stated discount), not cart-tested against sales. We earn a commission on partner links; the rubric does not read partner status.
Where to buy DSIP: 28 vendors, ranked
Reference size 10mg — the size most of these vendors sell. Other sizes we have on record are listed per vendor.
| # | Vendor | Score | 10mg price | Other sizes | Trustpilot | Buy |
|---|---|---|---|---|---|---|
| 1 | 10/10 | $44.99 $4.50/mg · read 8 Nov 2026 | none read | 4.8 101 reviews | $31.49 with code, 30% off | |
| 2 | 10/10 | $30.00 $3.00/mg · read 5 Nov 2026 | none read | 4.8 247 reviews | $24.00 with code, 20% off | |
| 3 | 10/10 | $31.49$44.99Sale $3.15/mg · read 8 Nov 2026 17% since 29 Oct | none read | 4.8 88 reviews | $28.34 with code, 10% off | |
| 4 | Peptide GiantsPartner Janoshik Analytical · Vanguard Laboratory | 10/10 | $38.00$55.00Sale $3.80/mg · read 5 Nov 2026 | 5mg $21.99 | 4.6 65 reviews | $34.20 with code, 10% off |
| 5 | 10/10 | $48.99 $4.90/mg · read 25 Oct 2026 | none read | 4.7 85 reviews | ||
| 6 | 9/10 | $58.00 $5.80/mg · read 5 Nov 2026 | none read | 4.8 535 reviews | $52.20 with code, 10% off | |
| 7 | 9/10 | not sold at 10mg | 5mg $30.00 | 4.9 88 reviews | 10% off | |
| 8 | ezPepsPartner ILS Laboratories (also Kovera Labs, Freedom Diagnostics, Horizon Analytical) | 9/10 | $49.99 $5.00/mg · read 31 Oct 2026 | none read | 4.8 249 reviews | $39.99 with code, 20% off |
| 9 | 9/10 | $63.00 $6.30/mg · read 10 Oct 2026 | 5mg $35.00 | profile removed | ||
| 10 | 9/10 | $79.99$89.99Sale $8.00/mg · read 5 Nov 2026 | 5mg $44.99 | profile removed | ||
| 11 | 9/10 | $90.00 $9.00/mg · read 1 Nov 2026 | 5mg $55.00 | 4.6 33 reviews | ||
| 12 | 8/10 | $54.99 $5.50/mg · read 5 Nov 2026 | 5mg $39.99 | 4.3 223 reviews | $49.49 with code, 10% off | |
| 13 | 8/10 | not sold at 10mg | 5mg $30.00 | 4.9 94 Google reviews | 15% off | |
| 14 | 8/10 | $35.00 $3.50/mg · read 8 Nov 2026 | none read | 4.8 88 reviews | $31.50 with code, 10% off | |
| 15 | 8/10 | $17.80 $1.78/mg · read 26 Oct 2026 | none read | 3.9 73 reviews | ||
| 16 | ILS Laboratories (also Freedom Diagnostics, Vanguard Laboratory, BTLabs) | 8/10 | $29.00 $2.90/mg · read 31 Oct 2026 | none read | 4.4 30 reviews | |
| 17 | 8/10 | not sold at 10mg | 5mg $26.24 | 4.8 62 reviews | ||
| 18 | Bioviridian, SR Bio Labs (lab-hosted PDFs); Krause Analytical via Finnrick | 8/10 | not sold at 10mg | 2mg $29.99 | profile removed | |
| 19 | 7/10 | $29.99 $3.00/mg · read 8 Nov 2026 | none read | 3.8 2 reviews | $26.99 with code, 10% off | |
| 20 | Peptide PartnersPartner TrustPointe Analytics, Chromate, Kovera Labs, BioRegen (certificate ledger) | 7/10 | not sold at 10mg | 5mg $37.50 | profile removed | 10% off |
| 21 | 7/10 | not sold at 10mg | 5mg $35.00 | 4.8 65 reviews | 10% off your first order | |
| 22 | ILS Laboratories (on certificates) · page credits Freedom Diagnostics | 7/10 | $34.95 $3.50/mg · read 5 Nov 2026 | none read | profile removed | |
| 23 | Horizon Analytical (also ILS Laboratories) | 7/10 | $34.99$49.99Sale $3.50/mg · read 31 Oct 2026 | none read | 4.6 451 reviews | |
| 24 | 6/10 | $34.99$49.99Sale $3.50/mg · read 23 Sep 2026 | none read | 4.8 44 reviews | $31.49 with code, 10% off | |
| 25 | 6/10 | not sold at 10mg | 5mg $20.00 | 4.8 176 reviews | 10% off | |
| 26 | 6/10 | not sold at 10mg | 5mg $25.82 | profile removed | ||
| 27 | 6/10 | not sold at 10mg | 5mg $39.50 | profile removed | ||
| 28 | Licensed PeptidesPartner Vanguard Laboratory (printed 'Vangaurd' on COA panels) | 5/10 | not sold at 10mg | 5mg $53.99 | profile removed | 5% off |
What makes DSIP different to source
DSIP (delta sleep-inducing peptide) is a nine-residue peptide first isolated decades ago, and it is one of the cheaper compounds for a vendor to stock. Almost every catalog we read for this page listed it, usually in two vial sizes, and often as a 'sleep' product alongside compounds it has nothing to do with chemically.
Short peptides are easy to synthesise but also easy to get wrong in small ways: a truncated or deletion sequence can co-elute with the target on HPLC and inflate a purity figure. The certificate check that matters here is mass-spectrometry identity, which confirms the molecular weight of the full sequence.
The ranking below is by rubric score first and dated price per milligram second. Where a vendor sells two sizes, both are listed; the reference size for ordering is the one the most vendors carry.
The top 3, explained
Purgo Labs
10/10Affiliate partnerWhat we can verify
Publishes per-lot COAs naming the testing laboratory — SteriGenix and Freedom Diagnostics — with lot numbers, test dates, measured net peptide content and direct verify-at-lab links. HPLC and mass spectrometry testing, US-based fulfilment from Scottsdale, Arizona, same-day dispatch on weekday orders before 2PM EST, and a 60-day money-back guarantee.
Net content: Measured net peptide published per lot (e.g. BPC-157 lot PL-BPC-05: 11.16mg vs 10mg label)
Where it falls short
Smaller independent review base than several competitors (101 reviews). The catalog is peptide-focused, so researchers also working with SARMs or broader research chemicals will need a second supplier.
MyPurePeptide
10/10Affiliate partnerWhat we can verify
Janoshik Analytical report #223088 for BPC-157 10mg batch 10242025B2 (sample received 17 Aug, analysed 24 Aug 2026): 11.61mg measured, purity 99.635%. We opened it on the lab's own verification page (key 1GTY19EIMQE4) on 30 Sep 2026 — client, manufacturer and batch print as MyPurePeptide. A public COA directory lists 103 report records across 47 products, each with task number, verification key, report batch, the original report image and the sample photograph, plus endotoxin reports for most lots; every product page links its current report. Open catalog with sized prices (BPC-157 10mg $25; TB-500 10mg $25; GHK-Cu 100mg $35; Ipamorelin 10mg $25; Tesamorelin 10mg $40; NAD+ 500mg $35). Legal entity myPurePeptide LLC with a mailing address in Austin, Texas; Visa and American Express at checkout. Trustpilot 4.8 across 247 reviews (read 10 Oct 2026), claimed December 2025.
Net content: Report states 11.61mg measured on a 10mg label (116% — just over our 115% flag line), purity 99.635%; TB-500 #223097 11.54mg / 99.007%
Where it falls short
The printed address (12407 N Mopac Expy Ste 250 PMB 570, Austin) is a commercial mailbox, not premises — identity is awarded on the named LLC with that disclosure. The BPC-157 report measures 11.61mg on a 10mg label, 116% — just over our 115% flag line; TB-500 10mg measured 11.54mg. The vendor's own site says a report 'alone does not confirm the lot shipped'. The GLP-class pages print strike-through reference prices far above the selling price (Semaglutide 10mg 'was $399.99', now $70; Retatrutide 10mg 'was $699.99', now $80) — treat the 'you save' figures as marketing. Zelle is offered alongside cards. Returns: 7-day unopened window with a continuous unboxing video required for damage claims. A domain lookalike (mypurepeptides.com) is disclaimed on the vendor's homepage.
Oneday Compounds
10/10Affiliate partnerWhat we can verify
Read 29 October 2026 through a registered account (prices and the COA library sit behind a login). A WooCommerce store with 49 listings, sized pricing on each, all shown at 40% off a struck list price during a rebrand to 'BY ONEDAY' (BPC-157 10mg $23.99 from $39.99; TB-500 10mg $29.99; NAD+ 500mg $35.99; GHK-Cu 50mg $20.99; MOTS-c 10mg $26.99). The COA library carries 57 entries, every one with at least one lot-numbered certificate, and the links open on ILS Laboratories' own portal: the retatrutide ('OC-3RT') 10mg report COA-2026-3WBETH, lot OC-RT10-106, analysed 2 Sep 2026, reads 99.63% purity, identity retatrutide confirmed, net content 10.31 mg on a 10 mg label, with three vials averaging 10.37 mg, sterility (USP 71), endotoxin and heavy metals passed. Product pages print the lot shipping (BPC-157 10mg: OC-BPC10-104, 99.82%, 10.30 mg). Oneday Enterprises, LLC d/b/a Oneday Compounds, 2326 Washington Blvd, Fourth Floor, Ogden, Utah.
Net content: COA-2026-3WBETH (OC-3RT 10mg, lot OC-RT10-106): net content 10.31 mg on a 10 mg label, three vials 10.22 / 10.31 / 10.59 mg, purity 99.63%, identity retatrutide confirmed; BPC-157 10mg lot OC-BPC10-104 10.30 mg, 99.82%
Where it falls short
Prices and certificates need a free account (no purchase), which since 1 November 2026 no longer costs the ungated point. All sales are final, with damage to be reported within 24 hours; checkout takes cards, but Zelle carries a 5% discount and the FAQ still lists only Zelle, Cash App, Venmo and ACH. The product pages say 'up to 12X' (ILS lots) and the cart says 'up to 16X'; both hold, because Oneday's Ethos Analytics reports carry a wider panel (checked on CJC-1295/Ipamorelin lot OC-CJI10-104, 1 November 2026). GLP-class products are sold by code (OC-2TZ, OC-3RT); the lab confirms retatrutide for OC-3RT.
Purgo Labs for DSIP
Purgo Labs sits at #1 of 28 on this page: 10/10 on the rubric, 10mg at $44.99 read 8 Nov 2026. Code HEALTH gives 30% off eligible products. We earn a commission; it did not decide the order above.
Before you order, check the batch
A ranking tells you which vendors have good practices; it cannot tell you about the specific vial you receive. When your order arrives, compare the batch number on the label to the certificate. If they do not match, or there is no batch number, the documentation does not cover what you were sent, regardless of who you bought from. How to read a peptide COA.
Buying DSIP — frequently asked
Where can I buy DSIP?
As of 8 Nov 2026, 28 of the 106 vendors on our scoreboard list DSIP with a price we have read on the product page: Purgo Labs, MyPurePeptide, Oneday Compounds, Peptide Giants, Panda Peptides, Ameano Peptides, Snap Peptides, ezPeps, Pure Peptides, Pure Lab Peptides, Oath Research, PS Peptides, Amplified Labs, Blue Ridge Peptides, Nexaph, Crush Research, Everest Peptides, Loti Labs, ZC Labs, Peptide Partners, GigaCompounds, Puratek Peptides, Value Research Labs, Arizen BioLabs, Elite Edge Biotech, Blue Sky Peptide, Peptide Pros, Licensed Peptides. Every one of them is scored on the same 10-point rubric; the table above shows the score, the dated price and what you can verify before ordering.
Who sells the cheapest DSIP?
At the 10mg size, the lowest price we have on record is Nexaph at $17.80 (read 26 Oct 2026) — Store API · sold as 'DSIP 10mg (10 vials/kit)' $178.00/kit on sale, regular $218.00 · per-vial = kit ÷ 10. It scores 8/10 on documentation. Price is the second sort key on this page, not the first, because an underdosed vial at a low price is the most expensive outcome.
Which DSIP vendor has the best documentation?
Purgo Labs, MyPurePeptide, Oneday Compounds, Peptide Giants, Panda Peptides share the top score at 10/10: named laboratory, certificates that resolve on the laboratory's own site, measured milligrams against the label, and a published legal identity. The per-criterion evidence, with dates, is on each vendor's review page.
Is it legal to buy DSIP?
DSIP is sold by these vendors as a research chemical for laboratory use, not for human consumption; none of it is FDA-approved in this form. Legality of purchase varies by jurisdiction and the compound, and it is your responsibility to know your local rules. Our pages assess documentation and pricing; they are not legal or medical advice.
How is this list ordered?
Rubric score first. Among equal scores, our editorial pick (Purgo Labs) comes first, then a short, named list of affiliate partners we choose to list first inside a tie, then the lower verified price per milligram at 10mg, then the larger independent review base. 16 of the 28 vendors here are partners. A partnership never changes a score and never moves a vendor above one with a higher score.
Does it matter which DSIP vial size I buy?
For documentation, no — the same certificate usually covers both sizes from one lot. For price, compare per milligram: the larger size is not always cheaper per milligram, and some vendors price the two sizes almost identically.
How can I tell if a DSIP certificate is real?
Look for a laboratory name, a report number, and a way to check that number on the laboratory's own site. The vendors ranked highest on this page publish certificates that resolve that way; a vendor-hosted PDF with no report number is a claim, not evidence.