Best Semax Vendors in 2026
Cognitive / NeuroRanked by Finnrick trust score, purity testing, and price.
Paramount Peptides is our #1 pick for Semax, with a Finnrick trust score of 6.7/10. Across 58 tracked vendors, prices range from $20.00 to $739.50, verified by Peptide Compare on 10 Oct 2026. Prices are scraped from vendor sites; trust scores come from Finnrick blind tests.
Check price at Paramount PeptidesIf you buy after clicking, we may earn a commission. How that works
- Cheapest per mg
- $2.12/mgat Biotech Peptides
- Highest trust score
- Risynth Bio(9.1/10)
- In stock now
- 60 products across 58 vendors
- Last verified
- Oct 10, 2026
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Top Semax vendors at a glance
| Rank | Vendor | Trust score | Per mg |
|---|---|---|---|
| #1 | Paramount Peptides | 6.7/10 | $2.27 |
| #2 | Bio Pepz | 6.5/10 | $2.20 |
| #3 | Felix Chem | 7.9/10 | $3.50 |
| #4 | Eros Peptides | 6.9/10 | $3.50 |
| #5 | Polaris Peptides | 7.3/10 | $4.00 |
| #6 | BioLongevity Labs | 6.0/10 | $3.25 |
| #7 | Omegamino | 7.7/10 | $5.10 |
| #8 | Nextech Labs | 7.0/10 | $4.50 |
| #9 | Bulk Peptides | 7.5/10 | $28.00 |
| #10 | Oasis Labs | 5.7/10 | $4.50 |
All 58 ranked Semax 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.