Where to Buy DSIP in 2026: 32 Lab-Tested Sellers, From $1.89/mg With a Coupon Code
Where to buy DSIP: PepAssess lists DSIP at 48 vendors. As of November 12, 2026, the lowest price with a coupon code is $1.89/mg at Modern Research Peptides (code pepassess); the median across all sellers is $5.00/mg. Vendors are ranked by Evidence Score.
Prices and codes updated November 12, 2026 · re-checked every night
A 2006 review calls it a 'still unresolved riddle': the gene, the protein it comes from and a receptor for it have never been identified, and its natural occurrence and activity remain obscure.
Learn more about DSIP (Delta Sleep-Inducing Peptide) from the published research: Journal of Neurochemistry (2006) · Neuropsychobiology (1992)
The compounds listed on this page are for research purposes only, not for human consumption.
DSIP reconstitution calculator →
DSIP coupon codes
Prices with the code taken off · updated November 12, 2026 · re-checked every night
Every DSIP coupon code
51 DSIP sellers with a confirmed code — PepAssess's preferred vendor first, then highest Evidence Score.
| Shop | Score | Vial with code | Per mg | Per mg with code | vs typical | Code discount | Code | |
|---|---|---|---|---|---|---|---|---|
| Rebirth LabsPreferred | 84score | 10 mg vial $53.99 with code | $6.00/mg | $5.40/mg with code | — | 10% off | ShopShop ↗ | |
| BioLongevity Labs | 100score | 5 mg vial $47.57 with code | $11.19/mg | $9.51/mg with code | — | 15% off | ShopShop ↗ | |
| Hydro Research Peptides | 100score | 5 mg vial $36 with code | $9/mg | $7.20/mg with code | — | 20% off | ShopShop ↗ | |
| Lost Coast Aminos | 100score | 10 mg vial $22.50 with code | $2.50/mg | $2.25/mg with code | 44% below typical | 10% off | ShopShop ↗ | |
| Myoasis Labs | 99score | 5 mg vial $30 with code | $7.50/mg | $6/mg with code | 6% below typical | 20% off | ShopShop ↗ | |
| Bench Grade Peptides | 95score | 5 mg vial $72 with code | $16/mg | $14.40/mg with code | — | 10% off | ShopShop ↗ | |
| GigaCompounds | 95score | 5 mg vial $31.50 with code | $7/mg | $6.30/mg with code | 12% below typical | 10% off | ShopShop ↗ | |
| Pinnacle Peptide Labs | 92score | 5 mg vial $42.49 with code | $10.00/mg | $8.50/mg with code | — | 15% off | ShopShop ↗ | |
| True Peptide Labs | 92score | 15 mg vial $29.90 with code | $3.07/mg | $1.99/mg with code | — | 35% off | ShopShop ↗ | |
| PeakForce Labs | 92score | 10 mg vial $31.85 with code | $3.19/mg | $3.19/mg with code | 29% below typical | 35% off | ShopShop ↗ | |
| Ascension Peptides | 90score | 10 mg vial $30 with code | $6/mg | $3/mg with code | — | 50% off | ShopShop ↗ | |
| Amino Research | 89score | 10 mg vial $31.99 with code | $4.00/mg | $3.20/mg with code | 11% below typical | 20% off | ShopShop ↗ | |
| Peptide Giants | 89score | 10 mg vial $36.10 with code | $3.80/mg | $3.61/mg with code | 16% below typical | 5% off | ShopShop ↗ | |
| Rivn Research | 88score | 5 mg vial $32.29 with code | $7.60/mg | $6.46/mg with code | 5% below typical | 15% off | ShopShop ↗ | |
| Prism Labs | 88score | 10 mg vial $35.99 with code | $4.00/mg | $3.60/mg with code | 11% below typical | 10% off | ShopShop ↗ | |
| NOVA Labs | 88score | — | — | — | — | 10% off | ShopShop ↗ | |
| Blue Ridge Peptides | 88score | 10 mg vial $31.50 with code | $3.50/mg | $3.15/mg with code | 22% below typical | 10% off | ShopShop ↗ | |
| Alpha Peptides | 87score | 5 mg vial $19.31 with code | $4.29/mg | $3.86/mg with code | 46% below typical | 10% off | ShopShop ↗ | |
| My Amino Lab | 86score | 10 mg vial $27.90 with code | $3.10/mg | $2.79/mg with code | 31% below typical | 10% off | ShopShop ↗ | |
| Pivot Labs Global | 86score | 5 mg vial $30.60 with code | $7.20/mg | $6.12/mg with code | — | 15% off | ShopShop ↗ | |
| Everest Peptides | 85score | 5 mg vial $19.59 with code | $4.90/mg | $3.92/mg with code | 39% below typical | 20% off | ShopShop ↗ | |
| Rejuven8 Peptides | 85score | 15 mg vial $48.44 with code | $4.00/mg | $3.40/mg with code | — | 15% off | ShopShop ↗ | |
| NuLab Peptides | 84score | 15 mg vial $58.32 with code | $4.86/mg | $3.89/mg with code | — | 20% off | ShopShop ↗ | |
| Disguised Alpha | 83score | — | — | — | — | 10% off | ShopShop ↗ | |
| One Aminos | 83score | — | — | — | — | 33% off | ShopShop ↗ | |
| VISTARA LABS | 83score | — | — | — | — | 25% off | ShopShop ↗ | |
| Modern Research Peptides | 82score | 10 mg vial $18.92 with code | $3.15/mg | $1.89/mg with code | 30% below typical | 40% off | ShopShop ↗ | |
| VAYN | 81score | 5 mg vial $33.60 with code | $8.40/mg | $6.72/mg with code | — | 20% off | ShopShop ↗ | |
| BioInfinity | 81score | — | — | — | — | 10% off | ShopShop ↗ | |
| Vortex Research | 81score | 5 mg vial $20.99 with code | $6.00/mg | $4.20/mg with code | 25% below typical | 30% off | ShopShop ↗ | |
| CertaPeptides | 79score | — | — | — | — | 10% off | ShopShop ↗ | |
| MsAmino | 78score | 10 mg vial $21.60 with code | $5.40/mg | $4.32/mg with code | — | 20% off | ShopShop ↗ | |
| Prime Peptide Solutions | 78score | 10 mg vial $44.99 with code | $5.00/mg | $4.50/mg with code | — | 10% off | ShopShop ↗ | |
| Ps Peptides | 77score | 10 mg vial $48.01 with code | $5.50/mg | $4.95/mg with code | — | 10% off | ShopShop ↗ | |
| Ouralus | 77score | 15 mg vial $39 with code | $2.60/mg | $2.60/mg with code | — | 10% off | ShopShop ↗ | |
| Great Northern Peptides | 76score | — | — | — | — | 10% off | ShopShop ↗ | |
| Zesty Rat | 75score | 10 mg vial $41.39 with code | $4.60/mg | $4.14/mg with code | — | 10% off | ShopShop ↗ | |
| Platinum Biolabs | 73score | 10 mg vial $51 with code | $6.80/mg | $5.10/mg with code | — | 25% off | ShopShop ↗ | |
| Blackline Scientific | 72score | 10 mg vial $36 with code | $4.50/mg | $3.60/mg with code | — | 20% off | ShopShop ↗ | |
| Ascend Research | 66score | 15 mg vial $89.96 with code | $6.66/mg | $6.00/mg with code | — | 10% off | ShopShop ↗ | |
| Value Research Labs | 64score | 10 mg vial $39.99 with code | $5.00/mg | $4.00/mg with code | — | 20% off | ShopShop ↗ | |
| Voltera Sciences | 64score | 10 mg vial $42.49 with code | $5.00/mg | $4.25/mg with code | — | 15% off | ShopShop ↗ | |
| VMAX Peptides | 63score | 10 mg vial $26.91 with code | $2.99/mg | $2.69/mg with code | 34% below typical | 10% off | ShopShop ↗ | |
| Peptuvia | 63score | 15 mg vial $125.10 with code | $9.27/mg | $8.34/mg with code | — | 10% off | ShopShop ↗ | |
| Vitality Chems | 59score | 5 mg vial $48.94 with code | $11.00/mg | $9.79/mg with code | — | 11% off | ShopShop ↗ | |
| 99PurityPeptides | 43score | — | — | — | — | 10% off | ShopShop ↗ | |
| TCORE BIOTECH | 33score | 10 mg vial $29.43 with code | $3.68/mg | $2.94/mg with code | 18% below typical | 20% off | ShopShop ↗ | |
| Sparta Labs | 31score | — | — | — | — | 15% off | ShopShop ↗ | |
| Project Amino | 21score | — | — | — | — | 10% off | ShopShop ↗ | |
| Helix Bio Chem | 16score | 10 mg vial $44.99 with code | $5.00/mg | $4.50/mg with code | — | 10% off | ShopShop ↗ | |
| XLR8 | 15score | 10 mg vial $47.99 with code | $6.00/mg | $4.80/mg with code | — | 20% off | ShopShop ↗ |
Where to buy DSIP: the short answer
What is the lowest DSIP price with a coupon code?
As of November 12, 2026, the lowest DSIP price PepAssess found with a coupon code is at Modern Research Peptides: $1.89 per mg with code pepassess (40% off; $3.15 per mg before the code). Prices are re-checked every night. Modern Research Peptides coupon code
What is the best DSIP coupon code?
As of November 12, 2026, the biggest DSIP coupon code PepAssess has confirmed is PEPASSESS50OFF for 50% off at Ascension Peptides, which brings it to $3.00 per mg. PepAssess lists each code with its discount and the seller's Evidence Score, based on lab reports confirmed with the testing labs. Ascension Peptides coupon code
Where can I buy lab-tested DSIP?
As of November 12, 2026, PepAssess lists 48 online vendors selling DSIP. 32 of them publish a DSIP lab report that the testing lab confirmed on its own records, and 12 of those cover both purity (HPLC and mass spec) and toxicity (endotoxin or sterility). The highest-scoring vendors with a lab-confirmed DSIP report are BioLongevity Labs (100/100), Hydro Research Peptides (100/100) and Lost Coast Aminos (100/100). Compare all 48 DSIP vendors on PepAssess
What is the best DSIP vendor?
PepAssess ranks DSIP vendors by Evidence Score (0–100): what each vendor documents — lab reports confirmed by the labs, how often it tests, business transparency and buyer protection. As of November 12, 2026, the top-scoring DSIP vendors are BioLongevity Labs (100/100), Hydro Research Peptides (100/100) and Lost Coast Aminos (100/100) — all three with a lab-confirmed DSIP report.
What is the cheapest DSIP per mg?
The lowest DSIP price PepAssess found is $2.50/mg at Lost Coast Aminos; the median across vendors is $5.00/mg (as of November 12, 2026). Among vendors with a lab-confirmed DSIP report, the lowest is $2.50/mg at Lost Coast Aminos. Prices come from each vendor's own store and exclude shipping and discounts.
DSIP cost per week
What one 10 mg vial of DSIP costs per week of research, at the lowest one-vial price with a coupon code: $18.92 at Modern Research Peptides (code pepassess, $1.89/mg), as of November 12, 2026.
| One vial used over | Cost per week |
|---|---|
| 2 weeks | $9.46 |
| 4 weeks | $4.73 |
| 8 weeks | $2.37 |
Lab-confirmed DSIP reports
35 of 48 sellers publish a DSIP lab report. 32 have one the testing lab confirmed on its own records; 12 of those cover both purity (HPLC + mass-spec identity) and toxicity (endotoxin or sterility). Those covering both are listed first, then by Evidence Score.
| Vendor | Purity | Toxicity | Latest | Per mg | Code | Score | |
|---|---|---|---|---|---|---|---|
| BioLongevity Labs | Purity ✓↗ | Toxicity ✓↗ | May 2026 | $11.19/mg | 15% off | 100score | ShopShop ↗ |
 Lost Coast Aminos | Purity ✓↗ | Toxicity ✓↗ | Jul 2026 | $2.50/mg | 10% off | 100score | ShopShop ↗ |
 Pinnacle Peptide Labs | Purity ✓↗ | Toxicity ✓↗ | Sep 2026 | $10.00/mg | 15% off | 92score | ShopShop ↗ |
| Ascension Peptides | Purity ✓↗ | Toxicity ✓↗ | Jun 2026 | $6/mg | 50% off | 90score | ShopShop ↗ |
 Amino Research | Purity ✓↗ | Toxicity ✓↗ | Jun 2026 | $4.00/mg | 20% off | 89score | ShopShop ↗ |
 Prism Labs | Purity ✓↗ | Toxicity ✓↗ | Sep 2026 | $4.00/mg | 10% off | 88score | ShopShop ↗ |
 Disguised Alpha | Purity ✓↗ | Toxicity ✓↗ | Aug 2026 | — | 10% off | 83score | ShopShop ↗ |
 One Aminos | Purity ✓↗ | Toxicity ✓↗ | Sep 2026 | — | 33% off | 83score | ShopShop ↗ |
 Modern Research Peptides | Purity ✓↗ | Toxicity ✓↗ | Mar 2026 | $3.15/mg | 40% off | 82score | ShopShop ↗ |
 BioInfinity | Purity ✓↗ | Toxicity ✓↗ | Jun 2026 | — | 10% off | 81score | ShopShop ↗ |
 MsAmino | Purity ✓↗ | Toxicity ✓↗ | Aug 2026 | $5.40/mg | 20% off | 78score | ShopShop ↗ |
 Ps Peptides | Purity ✓↗ | Toxicity ✓↗ | — | $5.50/mg | 10% off | 77score | ShopShop ↗ |
 Hydro Research Peptides | Purity – | Toxicity ✓↗ | May 2025 · over a year old | $9/mg | 20% off | 100score | ShopShop ↗ |
 Myoasis Labs | Purity ✓↗ | Toxicity – | Jun 2026 | $7.50/mg | 20% off | 99score | ShopShop ↗ |
 GigaCompounds | Purity – | Toxicity ✓↗ | Sep 2026 | $7/mg | 10% off | 95score | ShopShop ↗ |
 True Peptide Labs | Purity ✓↗ | Toxicity – | May 2026 | $3.07/mg | 35% off | 92score | ShopShop ↗ |
 PeakForce Labs | Purity ✓↗ | Toxicity – | Nov 2025 | $3.19/mg | 35% off | 92score | ShopShop ↗ |
 Peptide Giants | Purity – | Toxicity – | — | $3.80/mg | 5% off | 89score | ShopShop ↗ |
| Rivn Research | Purity ✓↗ | Toxicity – | Jul 2026 | $7.60/mg | 15% off | 88score | ShopShop ↗ |
 NOVA Labs | Purity – | Toxicity – | — | — | 10% off | 88score | ShopShop ↗ |
 Alpha Peptides | Purity ✓↗ | Toxicity – | May 2026 | $4.29/mg | 10% off | 87score | ShopShop ↗ |
 My Amino Lab | Purity ✓↗ | Toxicity – | Sep 2026 | $3.10/mg | 10% off | 86score | ShopShop ↗ |
 Everest Peptides | Purity ✓↗ | Toxicity – | Jul 2026 | $4.90/mg | 20% off | 85score | ShopShop ↗ |
 Rebirth Labs | Purity ✓↗ | Toxicity – | Jul 2026 | $6.00/mg | 10% off | 84score | ShopShop ↗ |
 VISTARA LABS | Purity ✓↗ | Toxicity – | May 2026 | — | 25% off | 83score | ShopShop ↗ |
 VAYN | Purity ✓↗ | Toxicity – | May 2026 | $8.40/mg | 20% off | 81score | ShopShop ↗ |
 CertaPeptides | Purity – | Toxicity – | — | — | 10% off | 79score | ShopShop ↗ |
 Ouralus | Purity ✓↗ | Toxicity – | Dec 2025 | $2.60/mg | 10% off | 77score | ShopShop ↗ |
 Great Northern Peptides | Purity ✓↗ | Toxicity – | Jul 2026 | — | 10% off | 76score | ShopShop ↗ |
 Zesty Rat | Purity – | Toxicity – | Jul 2026 | $4.60/mg | 10% off | 75score | ShopShop ↗ |
| # | Vendor | Doses (mg) | From | Best $/mg | Evidence score ⓘ | |
|---|---|---|---|---|---|---|
| 1 | 5 | from $55.97 ↗ | $11.19/mg | 100score | Shop | |
| 2 | 5 | from $45 ↗ | $9/mg | 100score | Shop | |
| 3 | 5 | from $49.99 ↗ | $10.00/mg | 92score | Shop | |
| 4 | 10 | from $60 ↗ | $6/mg | 90score | Shop | |
| 5 | 5, 10 | from $37.99 ↗ | $7.60/mg | 88score | Shop | |
| 6 | 5, 15 | from $80 ↗ | $16/mg | 95score | Shop | |
| 7 | 10 | from $39.99 ↗ | $4.00/mg | 89score | Shop | |
| 8 | 5 | from $37.50 ↗ | $7.50/mg | 99score | Shop | |
| 9 | 5, 10 | from $59.99 ↗ | $6.00/mg | 84score | Shop | |
| 10 | 10 | from $53.99 ↗ | $5.40/mg | 78score | Shop | |
| 11 | 5 | from $42 ↗ | $8.40/mg | 81score | Shop | |
| 12 | 5 | from $24.49 ↗ | $4.90/mg | 85score | Shop | |
| 13 | 10 | from $25 ↗ | $2.50/mg | 100score | Shop | |
| 14 | 10 | from $39.99 ↗ | $4.00/mg | 88score | Shop | |
| 15 | 15 | from $59.99 ↗ | $4.00/mg | 85score | Shop | |
| 16 | 5, 10, 20, 30, 60 | — | — | 83score | Shop | |
| 17 | 10 | from $31.54 ↗ | $3.15/mg | 82score | Shop | |
| 18 | 10 | — | — | 88score | Shop | |
| 19 | — | — | — | 83score | Shop | |
| 20 | 10 | from $31 ↗ | $3.10/mg | 86score | Shop | |
| 21 | — | — | — | 81score | Shop | |
| 22 | 10 | from $49.99 ↗ | $5.00/mg | 78score | Shop | |
| 23 | 5, 10 | from $21.45 ↗ | $4.29/mg | 87score | Shop | |
| 24 | 5, 10 | from $21.99 ↗ | $3.80/mg | 89score | Shop | |
| 25 | 10 | from $49.99 ↗ | $5.00/mg | 64score | Shop | |
| 26 | 10 | from $35 ↗ | $3.50/mg | 88score | Shop | |
| 27 | 10 | from $45.99 ↗ | $4.60/mg | 75score | Shop | |
| 28 | 5, 15 | from $47.70 ↗ | $4.86/mg | 84score | Shop | |
| 29 | 15 | — | — | 76score | Shop | |
| 30 | 2, 5, 10, 15 | — | — | 79score | Shop | |
| 31 | 5, 10 | from $54.99 ↗ | $5.50/mg | 77score | Shop | |
| 32 | 5 | — | — | 83score | Shop | |
| 33 | 10 | from $49.99 ↗ | $5.00/mg | 64score | Shop | |
| 34 | 10 | from $45 ↗ | $4.50/mg | 72score | Shop | |
| 35 | 10 | — | — | 43score | Shop | |
| 36 | 5, 10 | from $21.59 ↗ | $3.68/mg | 33score | Shop | |
| 37 | — | — | — | 31score | Shop | |
| 38 | 10 | from $49.99 ↗ | $5.00/mg | 16score | Shop | |
| 39 | — | — | — | 21score | Shop | |
| 40 | 10, 15 | from $59.99 ↗ | $6.00/mg | 15score | Shop | |
| 41 | 5 | from $35 ↗ | $7/mg | 95score | Shop | |
| 42 | 5 | from $28 ↗ | $3.07/mg | 92score | Shop | |
| 43 | 5, 15 | from $55.95 ↗ | $6.66/mg | 66score | Shop | |
| 44 | 5 | from $29.99 ↗ | $6.00/mg | 81score | Shop | |
| 45 | 5, 10 | from $19.90 ↗ | $2.99/mg | 63score | Shop | |
| 46 | 5 | from $54.99 ↗ | $11.00/mg | 59score | Shop | |
| 47 | 5, 10 | from $25.35 ↗ | $3.19/mg | 92score | Shop | |
| 48 | 15 | from $39 ↗ | $2.60/mg | 77score | Shop |
Prices come from each vendor's own public store data and may exclude shipping, discounts or bulk pricing. Research-use products; not medical advice.
About DSIP (Delta Sleep-Inducing Peptide)
What it is
A 2006 review calls it a 'still unresolved riddle': the gene, the protein it comes from and a receptor for it have never been identified, and its natural occurrence and activity remain obscure. Its structure is unlike any known peptide family.
How it works
- No receptor or gene for DSIP has been identified, so how it would act is unknown.
- A 1986 review suggested a possible mechanism involving modulation of adrenergic (noradrenaline) signalling but said this remained to be established.
- Some effects seen in animals came from synthetic DSIP analogues, not DSIP itself.
The compounds listed on this page are for research purposes only, not for human consumption. Not medical advice.
DSIP: more questions people ask
Which DSIP vendors have lab reports confirmed by the testing lab?
32 as of November 12, 2026. Those whose confirmed reports cover both purity and toxicity: BioLongevity Labs, Lost Coast Aminos, Pinnacle Peptide Labs, Ascension Peptides, Amino Research, Prism Labs, Disguised Alpha and One Aminos and 4 more. PepAssess matches each report to the issuing lab's own public record, not the vendor's copy.
How can I tell if a DSIP certificate of analysis (COA) is real?
Look the report up in the testing lab's own records — most labs that test peptides publish a lookup by report ID, QR code or lot number. PepAssess does this for every DSIP report it finds: as of November 12, 2026, 32 of the 35 sellers publishing a DSIP report had one the lab confirmed.
How much does a vial of DSIP cost?
As of November 12, 2026, a 5 mg vial of DSIP costs a median $36 across the 165 sellers PepAssess found with one in stock (lowest $11.25); a 10 mg vial, a median $49 across 115 sellers (lowest $17.95); a 15 mg vial, a median $65 across 24 sellers (lowest $40). Each seller's lowest in-stock price for that size counts once; prices come from each seller's own store and exclude shipping and discounts.
Can you buy DSIP as a nasal spray or a pen?
Yes. As of November 12, 2026, 439 of the 48 DSIP sellers PepAssess lists sell a vial; 35 a nasal spray and 27 a pen or pre-filled form. Counts come from each store's own product names. A lab report covers the product and batch it names — check that it's for the form you're buying.
How do I know if a DSIP seller is legit?
Check what the seller can show. As of November 12, 2026, PepAssess checks every DSIP seller for three things: a DSIP lab report that the testing lab confirms on its own records (32 of 48), card payments, which let you dispute a charge (39 of 48), and a published street address — not a mailbox or registered agent (18 of 48). Each seller's PepAssess profile shows which of these it has.
Are there DSIP coupon codes?
Yes. PepAssess lists coupon codes for 48 vendors selling DSIP: BioLongevity Labs: PEPASSESS (15% off), Hydro Research Peptides: PepAssess20 (20% off), Lost Coast Aminos: PEPASSESS (10% off), Myoasis Labs: pepassess (20% off), Bench Grade Peptides: PEPASSESS (10% off), GigaCompounds: GC-PEPASSTFAAD (10% off) and 42 more.
CertaPeptides products are for research use only and not for human consumption.