Vendor and compound
Semax from Next Gen Peptides
Next Gen Peptides lists Semax at $3.50 per mg, 13% under the $4.00 peer median. 3 third-party certificates for this compound from this vendor are on file, assayed by ILS Laboratories, averaging 99.84% 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 87.7 of 100, rank 2 · 3 certificates for this compound · verified 5 Nov 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 10 mg | $35 | $3.50 | -13% | 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 |
|---|---|---|---|---|---|
| SMX30-02 | 24 Aug 2026 | 99.82% | 30 mg → 30.83 mg | ILS Laboratories | Open |
| SMX10-11 | 18 Aug 2026 | 99.93% | 10 mg → 10.35 mg | ILS Laboratories | Open |
| SMX-09 | 6 May 2026 | 99.77% | 10 mg → 10.39 mg | ILS Laboratories | Open |
ILS Laboratories publishes a lookup, so these reports can be confirmed at the laboratory rather than taken from the vendor. How to check one.
Other vendors selling Semax
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Origin Labs | 89.1 | $2.40 | 1 |
| ZC Labs | 87.2 | $2.00 | 1 |
| Amino Club | 86.1 | $3.00 | 0 |
| PeptidePlugs | 82.6 | $4.00 | 1 |
| Modern Aminos | 79.7 | $4.20 | 2 |
| Bench Grade Peptides | 79.4 | $5.40 | 2 |
| Stealth Research Labs | 78.1 | $4.00 | 1 |
| One Aminos | 78 | $3.50 | 1 |
Ordered by overall evidence score. See every vendor listing Semax.
Questions
Is Semax from Next Gen Peptides third-party tested?
Yes. 3 certificates for Semax from Next Gen Peptides are 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. ILS Laboratories also publishes a lookup, so the report can be confirmed at the laboratory rather than taken from the vendor.
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 $4.00 per mg, so this is -13% 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 87.7 of 100 on the published rubric and ranks 2 overall, computed from its documentation rather than from opinion. For Semax specifically it has 3 certificates on file. GenX Peptides lists it cheaper at $1.67 per mg.