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Semax research vial
Semax

Best Semax Vendors of 2026

Ranked by Price, Purity, and Reputation

5 vendors comparedfrom $2.46/mgCOA-verified sources only

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Quick Comparison

1Nura PeptideCOA
10/10
10mg$4.50/mg
2Ascension PeptidesCOA
9.8/10
10mg$5.00/mg
3Glacier AminosCOA
9.5/10
$4.10/mg
4EZ PeptidesCOA
9.3/10
$4.40/mg
5Swiss ChemsShips WorldwideCOA
9/10
30mg$2.46/mg

Other Ways to Buy Semax

Ready-to-use formats from the same vendors. These are priced per bottle rather than per vial, so they sit outside the cost-per-mg ranking above.

Semax research spray

Sprays

Pre-mixed metered sprayers — no reconstitution required.

  • Glacier AminosCOA10% off code thepeptidecatalog
    50mg · $2.80/mg
    $139.99
    View
  • Ion PeptideCOA15% off code thepeptidecatalogOut of stock
    10mg · $6.00/mg
    $59.95
    Sold out
  • Nura PeptideCOA30% off code thepeptidecatalogOut of stock
    10mg · $7.50/mg
    $75.00
    Sold out

Vendor links are affiliate links — The Peptide Catalog may earn a commission at no additional cost to you.

Semax research kit

Bulk Pricing

Per-vendor quantity breaks — pick a vial size to see the bulk price. Must purchase the full pack.

Nura PeptideCOA30% code thepeptidecatalog
as low as $2.52/mg
$750.00$252.00Save 66%10mg × 10

$7.50/mg $2.52/mg · 52% pack discount + 30% with code

View at Nura Peptide
Ascension PeptidesCOA
as low as $2.25/mg
$500.00$225.00Save 55%10mg × 10

$5.00/mg $2.25/mg · 10% pack discount + 50% auto-applied

View at Ascension Peptides
Glacier AminosCOA10% code thepeptidecatalog
as low as $1.89/mg
$409.90$276.66Save 33%10mg × 10

$4.10/mg $2.77/mg · 25% pack discount + 10% with code

View at Glacier Aminos
EZ PeptidesCOA10% code thepeptidecatalog
as low as $3.56/mg
$440.00$356.40Save 19%10mg × 10

$4.40/mg $3.56/mg · 10% pack discount + 10% with code

View at EZ Peptides

Semax Stacks & Blends

Pre-mixed combinations containing Semax — one vial, multiple peptides.

Semax + Selank research vial
Semax + Selank

Semax + Selank

Also contains: Selank

1Glacier Aminos
10/10
$81.9920mgCOA
10% OFF—thepeptidecatalog
2EZ Peptides
9.9/10
$88.0010mg/10mgCOA
10% OFF—thepeptidecatalog

Compare More Peptide Vendors

Best Selank Vendorsfrom $45.00 →Best DSIP Vendorsfrom $33.00 →Best Pinealon Vendorsfrom $50.00 →Best Cortagen Vendorsfrom $46.95 →Best Dihexa Vendorsfrom $97.99 →Best Noopept Vendorsfrom $19.99 →Best NSI-189 Vendorsfrom $22.99 →Best P-21 Vendorsfrom $114.95 →

How We Score Vendors

Our scoring is based on three weighted factors:

Price Competitiveness (40%)

Normalized to cost per milligram for fair comparisons across vial sizes.

COA Availability (30%)

Third-party lab testing confirming purity, identity, and absence of contaminants.

Vendor Reputation (30%)

Community feedback, shipping reliability, customer service, and business track record.

Best Deal on Semax →

All vendors sorted by $/mg — find the best deal

Calculate the Cost of Your Semax Cycle →

Pick your dose and duration — see the total with supplies

Best Selank Vendors of 2026 →

Ranked by price, purity testing, and buyer trust

Calculate the Cost of Your Selank Cycle →

Pick your dose and duration — see the total with supplies