Best DSIP Vendors in 2026
Cognitive / NeuroRanked by Finnrick trust score, purity testing, and price.
Eros Peptides is our #1 pick for DSIP, with a Finnrick trust score of 6.9/10. Across 52 tracked vendors, prices range from $17.00 to $249.50, verified by Peptide Compare on 9 Oct 2026. Prices are scraped from vendor sites; trust scores come from Finnrick blind tests.
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- Cheapest per mg
- $3.15/mgat Modern Research
- Highest trust score
- Risynth Bio(9.1/10)
- In stock now
- 48 products across 52 vendors
- Last verified
- Oct 9, 2026
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Top DSIP vendors at a glance
| Rank | Vendor | Trust score | Per mg |
|---|---|---|---|
| #1 | Eros Peptides | 6.9/10 | $3.40 |
| #2 | Nextech Labs | 7.0/10 | $4.50 |
| #3 | Felix Chem | 7.9/10 | $6.00 |
| #4 | Paramount Peptides | 6.7/10 | $6.54 |
| #5 | Polaris Peptides | 7.3/10 | $8.00 |
| #6 | Bulk Peptides | 7.5/10 | $28.00 |
| #7 | Oasis Labs | 5.7/10 | $7.50 |
| #8 | BioLongevity Labs | 6.0/10 | $11.19 |
| #9 | SwissChems | 4.0/10 | $124.75 |
| #10 | NUPEPS Peptides | 9.0/10 | $4.20 |
All 52 ranked DSIP vendors
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How we rank vendors
Our composite score weighs Finnrick blind-testing trust scores (62%), price competitiveness (25%), and stock availability (13%). Vendors without Finnrick data are sorted by price below scored vendors. We never accept payment for rankings. Learn more.