Best Semax Vendors
77 vendors we track carry Semax. The 51 that pass our testing gate are ranked below by PSR score, with the certificate each one posts for Semax, a price matched at 10mg and any reader code. For laboratory research use only.
- Carry it
- 77
Carry it
- Pass testing gate
- 51
Pass testing gate
- Lab-confirmed COAs
- 46
Lab-confirmed COAs
Want every carrier ordered by its Semax certificate instead, with sizes and stock? See the full Semax comparison. How a score is built: How we rate. How to check a certificate yourself: how to read a peptide COA.
Top 3 Semax vendors by PSR score
The highest PSR scores among open stores that carry Semax and pass our testing gate. Affiliate status plays no part in this list.
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
#1 by PSR score
Southern Aminos8.09Strong- Certificate
- View COA (key not found at lab) (opens in new tab)
- Lab
- Freedom Diagnostics TestingTier A
- Purity
- 99.323%
- Tested
- Price
- $3.52/mg ($35.20 for 10mg)
#2 by PSR score
Amino Club8.08Strong- Certificate
- Verified (opens in new tab)
- Lab
- ILS LaboratoriesTier B+
- Purity
- 99.93%
- Tested
- Price
- $3.00/mg ($29.95 for 10mg)
#3 by PSR score
Prime Peptides7.94Strong- Certificate
- Verified (opens in new tab)
- Lab
- Janoshik AnalyticalTier B+
- Purity
- 99.625%
- Tested
- Price
- $4.50/mg ($45.00 for 10mg)
Best Semax vendors with a reader discount
Affiliate partners that pass the testing gate and give readers a code that applies to Semax, in PSR score order. This block is a convenience only: the ranking below is the same with or without it.
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
- Luv Aminos7.90Strong
- Ameano Peptides7.80Strong
- LabFirst Peptides7.73Strong
- Honest Peptide7.71Strong
- Ascension Peptides7.55Strong
- BioLongevity Labs7.24Strong
- Arctic Lab Supply7.09Strong
- Limitless Biotech6.97Fair
- NovaForge Labs6.89Fair
- Pinnacle Peptide Labs6.60Fair
- NextGen Peps5.95Fair
Every Semax vendor that passes the gate, by PSR score
51 vendors, highest PSR score first; equal scores are listed alphabetically. Price per mg is matched at 10mg, the size most carriers sell, so vials compare like for like. The certificate column is the vendor’s certificate for Semax only. Affiliate status never affects the order (how we keep it separate).
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
Listed separately: 26 vendors outside the ranking
These carry Semax but do not meet our testing gate, so they are never placed in the ranking above, whatever their score. The gate records what we could verify; it is not a finding of a quality or safety problem.
Show 26 vendors that fail the testing gate
| # | Vendor | PSR score | Semax certificate |
|---|---|---|---|
| 1 | Modified Aminos | 6.75Fair | View (opens in new tab) |
| 2 | Curo | 6.27Fair | View (opens in new tab) |
| 3 | Swiss Chems | 5.39Weak | NoneNo third-party COA was publicly available at audit time |
| 4 | Peptide Warehouse | 5.01Weak | Vendor report (lab not established) (opens in new tab) |
| 5 | Redline Bio Labs | 4.80Weak | Verified (opens in new tab) |
| 6 | Vyal Labs | 4.59Weak | View (opens in new tab) |
| 7 | Based Research | 4.54Weak | View (opens in new tab) |
| 8 | GenX Bio | 4.39Weak | Login-gatedCOAs are provided but sit behind the vendor's login wall |
| 9 | PSPeptides | 3.95Poor | Vendor report (lab not established) (opens in new tab) |
| 10 | Peptide.Express | 3.90Poor | Vendor report (lab not established) (opens in new tab) |
| 11 | Lotus Peptide | 3.74Poor | NoneNo third-party COA was publicly available at audit time |
| 12 | Peptide Labs | 3.72Poor | Login-gatedCOAs are provided but sit behind the vendor's login wall |
| 13 | BioInfinity | 3.70Poor | Vendor report (lab not established) (opens in new tab) |
| 14 | Pexo Labs | 3.63Poor | NoneNo third-party COA was publicly available at audit time |
| 15 | Peptide Pros | 3.56Poor | NoneNo third-party COA was publicly available at audit time |
| 16 | Spartan Peptides | 3.32Poor | NoneNo third-party COA was publicly available at audit time |
| 17 | Drexa Labs | 3.28Poor | NoneNo third-party COA was publicly available at audit time |
| 18 | RapidCore Bio | 3.26Poor | Vendor-issued (opens in new tab) |
| 19 | Nextday Peptides | 3.21Poor | NoneNo third-party COA was publicly available at audit time |
| 20 | YourFitnessPeptides | 2.75Poor | NoneNo third-party COA was publicly available at audit time |
| 21 | Stack Research | 2.49Poor | View COA (differs from lab copy) (opens in new tab) |
| 22 | Peptide Warehouse US | 2.46Poor | NoneNo third-party COA was publicly available at audit time |
| 23 | Peptara Labs | 2.38Poor | Vendor report (lab not established) (opens in new tab) |
| 24 | PepBiotics | 2.23Poor | NoneNo third-party COA was publicly available at audit time |
| 25 | Welon Peptide Solutions | 2.13Poor | NoneNo third-party COA was publicly available at audit time |
| 26 | Medura Peptides | 1.63Poor | NoneNo third-party COA was publicly available at audit time |
Best Semax vendors: frequently asked questions
Who is the best Semax vendor?
By PSR score, Southern Aminos is the highest-rated open store carrying Semax that passes our testing gate (8.09/10, Strong). Amino Club (8.08) and Prime Peptides (7.94) follow. The certificate each of them posts for Semax is shown beside the score, so a reader can check it before buying.
Where can I buy Semax with a discount code?
11 affiliate partners carrying Semax pass our testing gate and give readers a code that applies to it. The highest rated is Luv Aminos (code PEPTIDESOURCEREVIEW, 10% off). We may earn a commission on those links; it never changes a score or a rank.
How are these Semax vendors ranked?
By PSR score, the published vendor score out of 10, built from lab testing, certificate verification, pricing, shipping, operating history and reviews under the rules on How We Rate. Equal scores are listed alphabetically. Price per mg and the certificate for Semax are shown but do not change the order, and affiliate status never does.
Why are some Semax vendors listed separately?
26 vendors carrying Semax do not meet our testing gate: third-party testing could not be established or independently verified. They are listed below the ranking rather than in it. The gate records what we could verify; it is not a finding of a quality or safety problem.
How do I check a Semax certificate of analysis?
Open the certificate from the vendor's row, confirm it names Semax and a batch, then look up the verification key on the testing laboratory's own site. 46 of the 77 Semax certificates we track were confirmed at the lab. Our guide on how to read a peptide COA walks through each field. For laboratory research use only.