Vendor and compound
Semax from Next Gen Peptides
Next Gen Peptides lists Semax at $3.50 per mg, 15% under the $4.10 peer median. 1 third-party certificate for this compound from this vendor is on file, assayed by ILS Laboratories, averaging 99.77% purity. The cheapest listed price for Semax anywhere in the index is $1.67 per mg at GenX Peptides.
All Semax vendors · Next Gen Peptides profile · scores 93.8 of 100, rank 1 · 1 certificate for this compound · verified 3 Aug 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 10 mg | $35 | $3.50 | -15% | Semax |
Read from the vendor’s own store and normalised per milligram, because a smaller vial at a lower sticker price is usually the dearer peptide. Codepepindex· 10% off applies at checkout.
What the laboratory found
| Lot | Assayed | Purity | Label → assayed | Laboratory | Record |
|---|---|---|---|---|---|
| SMX-09 | 6 May 2026 | 99.77% | 10 mg → 10.39 mg | ILS Laboratories | Open |
Other vendors selling Semax
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Ascend Science | 90.1 | $4.50 | 1 |
| Amino Club | 88.3 | $3.00 | 0 |
| Modern Aminos | 88.1 | $4.20 | 2 |
| Origin Labs | 87.7 | — | 1 |
| Bench Grade Peptides | 86.8 | $5.40 | 2 |
| Polaris Peptides | 86.6 | $4.00 | 1 |
| PeptidePlugs | 86.3 | $4.00 | 4 |
| Simple Peptide | 84.9 | $5.50 | 1 |
Ordered by overall evidence score. See every vendor listing Semax.
Questions
Is Semax from Next Gen Peptides third-party tested?
Yes. 1 certificate for Semax from Next Gen Peptides is on file, signed by ILS Laboratories. Each names a lot, prints the assayed mass against the labelled mass, and links to the document it was read from.
How much does Semax cost at Next Gen Peptides?
$3.50 per milligram, from 10 mg at $35. The peer median across every vendor we price for Semax is $4.10 per mg, so this is -15% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is Next Gen Peptides a good place to buy Semax?
Next Gen Peptides scores 93.8 of 100 on the published rubric and ranks 1 overall, computed from its documentation rather than from opinion. For Semax specifically it has 1 certificate on file. GenX Peptides lists it cheaper at $1.67 per mg.