Vendor and compound
Semax from GenX Peptides
GenX Peptides lists Semax at $1.67 per mg, 59% under the $4.10 peer median. No third-party certificate for Semax from GenX Peptides has been located, so nothing here establishes what is in the vial. That is the cheapest listed price for Semax in the index.
All Semax vendors · GenX Peptides profile · scores 69.2 of 100, rank 23 · 0 certificates for this compound · verified 1 Aug 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 30 mg | $50 | $1.67 | -59% | N-Acetyl Semax Amidate 30mg |
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.
What the laboratory found
No third-party certificate for Semax from GenX Peptides has been located.
That is a statement about the public record, not an accusation. The vendor may test and not publish, or publish somewhere we have not read. What it means for a buyer is that the price above is the only thing established here, and price says nothing about what is in the vial.
Vendors whose certificates you can check yourself lists the ones where that gap is closed.
Other vendors selling Semax
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Next Gen Peptides | 93.8 | $3.50 | 1 |
| 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 |
Ordered by overall evidence score. See every vendor listing Semax.
Questions
Is Semax from GenX Peptides third-party tested?
Not so far as this index can establish. No third-party certificate for Semax from GenX Peptides has been located. The vendor may test and not publish; what can be said is that nothing public establishes the contents of a vial.
How much does Semax cost at GenX Peptides?
$1.67 per milligram, from 30 mg at $50. The peer median across every vendor we price for Semax is $4.10 per mg, so this is -59% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is GenX Peptides a good place to buy Semax?
GenX Peptides scores 69.2 of 100 on the published rubric and ranks 23 overall, computed from its documentation rather than from opinion. For Semax specifically no certificate is on file, which is the gap to weigh.