Peptide Referee

Semax price per mg, by vendor

78 listings from 57 vendors, refreshed Oct 15, 2026.

This page covers Semax. N-acetyl Semax amidate is a chemically modified form, priced separately: see the N-Acetyl Semax Amidate price page.

$1.33/mg
Lowest, in a multi-vial pack
$3.58/mg
Median
$8.32/mg
Highest
$1.94/mg
Lowest from a vendor with public batch COAs

How much does Semax cost?

Where to buy Semax: lowest prices from the most transparent vendors

The cheapest in-stock Semax from vendors that publish batch-specific certificates of analysis (COAs), by price per mg, leaving out vendors with red flags or a warning letter, lawsuit or seizure in the past three years (why).

#VendorTransparencyCOAsBest listing$/mgVendor's page
1 Peptide Pros 58/100* Batch COAs public 30 mg for $58 $1.94/mg View
2 Orbitrex Peptides 73/100 Batch COAs public 30 mg for $80 $2.67/mg View
3 Puratek Peptides 63/100* Batch COAs public (Freedom Diagnostics) 10 mg for $33 $3.29/mg View
4 Alpha Peps 78/100 Batch COAs public (Freedom Diagnostics) 10 mg for $35 $3.50/mg View
5 Hydro Research 80/100 Batch COAs public (Janoshik Analytical, Chromate) 10 mg for $35 $3.50/mg View
6 Panda Peptide 50/100* Batch COAs public (Janoshik Analytical) 10 mg for CA$50 $3.52/mg View
7 Particle Peptides 83/100 Batch COAs public 10 mg for €33 $3.64/mg View
8 ANKR Lab 73/100 Batch COAs public (Freedom Diagnostics) 10 mg for $39 $3.90/mg View

Semax price by vial size

Vial sizeListingsLowestMedianHighestMedian $/mg
5 mg8$20$28$35$5.05/mg
10 mg48$18$39$83$3.94/mg
30 mg7$58$70$130$2.33/mg

Single vials only; multi-vial packs are in the full table below. Sizes with at least two listings.

All Semax listings

Vendor Transparency Product Size Price $/mg vs median Stock Vendor's page
Bulk Peptide Supply 57/100* Semax (10 vials) 30 mg × 10 $400 $1.33/mg −63% In stock View
IDUN Peptides 50/100* Semax 10 mg × 10 $160 $1.60/mg −55% In stock View
Bulk Peptide Supply 57/100* Semax 10 mg 10 mg $18 $1.75/mg −51% In stock View
Bulk Peptide Wholesale 45/100* SEMAX (10 vials) 10 mg × 10 $175 $1.75/mg −51% In stock View
Peptide Pros 58/100* Semax 30mg 30 mg $58 $1.94/mg −46% In stock View
Peptides World 80/100 Semax 30mg 30 mg $59 $1.97/mg −45% In stock View
IDUN Peptides 50/100* Semax 10 mg × 5 $100 $2.00/mg −44% In stock View
Iron Aminos 40/100* Semax 10mg 10 mg × 10 $210 $2.10/mg −41% In stock View
Biotech Peptides 47/100* Semax (25mg) 25 mg $53 $2.12/mg −41% In stock View
Bulk Peptide Supply 57/100* Semax (10 vials) 10 mg × 10 $225 $2.25/mg −37% In stock View
Paramount Peptides 65/100 Semax (30mg) 30 mg $68 $2.27/mg −37% In stock View
NuLife Peptides 10/100* Semax (30mg) 30 mg $70 $2.33/mg −35% In stock View
Swiss Chems FDA warning letter, Dec 2024 72/100 Semax 30mg 30 mg × 10 $740 $2.46/mg −31% Out of stock View
Swiss Chems FDA warning letter, Dec 2024 72/100 Semax 30mg 30 mg $74 $2.46/mg −31% In stock View
IDUN Peptides 50/100* Semax 10 mg $25 $2.50/mg −30% In stock View
Iron Aminos 40/100* Semax 10mg 10 mg $25 $2.50/mg −30% In stock View
Pure Lab Peptides 82/100 Semax 10mg 10 mg $25 $2.50/mg −30% In stock View
Reta One Labs 55/100* Semax 10mg 10 mg $26 $2.60/mg −27% In stock View
Orbitrex Peptides 73/100 Semax 30mg 30 mg $80 $2.67/mg −26% — View
Volta Peptides 70/100 Semax 10mg 10 mg $28 $2.80/mg −22% Out of stock View
Nextech Labs 60/100 Semax – 10mg 10 mg $29 $2.92/mg −18% In stock View
Orbitrex Peptides 73/100 Semax 10mg 10 mg $30 $3.00/mg −16% — View
Welli Labs 10/100* SEMAX 10mg 10 mg $30 $3.00/mg −16% In stock View
PurePeps 35/100* SEMAX 10MG / 30MG 30 mg A$130 $3.04/mg* −15% In stock View
Crush Research 10/100* Semax 10mg 10 mg × 5 $159 $3.18/mg −11% In stock View
Puratek Peptides 63/100* Semax 10 mg 10 mg $33 $3.29/mg −8% In stock View
Crush Research 10/100* Semax 10mg 10 mg × 3 $99 $3.30/mg −8% In stock View
Peptides Warehouse 62/100 Semax 10mg 10 mg $34 $3.36/mg −6% In stock View
Go Alpha Labs 83/100 Semax (10mg) (10 Vials) 10 mg × 10 $340 $3.40/mg −5% In stock View
Modern Research Peptides 10/100* Semax 10 mg $35 $3.50/mg −2% In stock View
Alpha Peps 78/100 SEMAX 10MG 10 mg $35 $3.50/mg −2% In stock View
Hydro Research 80/100 Semax 10mg 10 mg $35 $3.50/mg −2% In stock View
Peptide Crafters 27/100* Semax (10mg) 10 mg $35 $3.50/mg −2% In stock View
Ramp Peptides 47/100 SEMAX | 10MG 10 mg $35 $3.50/mg −2% In stock View
Royal Peptides FDA warning letter, Aug 2026 52/100 Semax 10mgx10vials 10 mg × 10 $350 $3.50/mg −2% In stock View
Panda Peptide 50/100* Semax (5mg-10mg) 10 mg CA$50 $3.52/mg* −2% In stock View
PS Peptides 22/100* Semax (1 Vial) – Subscription 11 mg $39 $3.52/mg −2% In stock View
Southern Aminos 10/100* Semax 10mg 10 mg $35 $3.52/mg −2% In stock View
Particle Peptides 83/100 Semax 10mg 10 mg €33 $3.64/mg* +2% — View
PX Peptides 5/100* SEMAX 10 mg $38 $3.82/mg +7% Out of stock View
AIO Peptides 52/100 Semax 10mg 10 mg $38 $3.83/mg +7% In stock View
ANKR Lab 73/100 Semax 10mg 10 mg $39 $3.90/mg +9% In stock View
Crush Research 10/100* Semax 10mg 10 mg $39 $3.90/mg +9% In stock View
Peptide Maxxing 40/100* SEMAX 10 mg $39 $3.90/mg +9% In stock View
Receptor Chem 62/100* Semax 10 mg £30 $3.98/mg* +11% In stock View
Pure Lab Peptides 82/100 Semax 5mg 5 mg $20 $4.00/mg +12% Out of stock View
EZ Peptides 75/100* Semax 10 mg $40 $4.00/mg +12% In stock View
Peptide Plugs 57/100* Semax 10mg 10 mg $40 $4.00/mg +12% In stock View
Enhanced Chems 25/100* Semax 10mg 10 mg $42 $4.20/mg +17% In stock View
Royal Peptides FDA warning letter, Aug 2026 52/100 Semax 10mg 10 mg × 10 $430 $4.30/mg +20% In stock View
Modern Research Peptides 10/100* Semax 5 mg $22 $4.40/mg +23% In stock View
Go Alpha Labs 83/100 Semax (10mg) 10 mg $45 $4.50/mg +26% In stock View
Apex Amino 55/100 Semax – 10mg 10 mg $45 $4.50/mg +26% In stock View
Legendary Peptides Lawsuit, Aug 2026 90/100 Semax 10mg 10 mg $45 $4.50/mg +26% In stock View
Oasis Labs 60/100 Semax 10mg 10 mg $45 $4.50/mg +26% In stock View
PurePeps 35/100* SEMAX 10MG / 30MG 10 mg A$65 $4.56/mg* +27% In stock View
Peptide Labs 65/100 Semax 10 mg $46 $4.60/mg +28% In stock View
Go Alpha Labs 83/100 Semax (5mg) (10 Vials) 5 mg × 10 $233 $4.66/mg +30% In stock View
Panda Peptide 50/100* Semax (5mg-10mg) 5 mg CA$35 $4.92/mg* +37% Out of stock View
Evolve Peptides 60/100* Semax (5mg) 5 mg $25 $5.00/mg +40% In stock View
NuLife Peptides 10/100* Semax (10mg) 10 mg $50 $5.00/mg +40% In stock View
Risynth Bio 47/100* Semax – 10 mg $50 $5.00/mg +40% In stock View
PX Peptides 5/100* SEMAX 5 mg $25 $5.10/mg +42% Out of stock View
Masters Peptides 22/100* Semax (10mg) 10 mg $51 $5.10/mg +42% In stock View
Nupeps 40/100* Semax 10MG 10 mg $52 $5.20/mg +45% — View
Certified Peptides 60/100* SEMAX 10MG 10 mg $54 $5.40/mg +51% In stock View
True Form Peptides 67/100 Semax 10 mg 10 mg $55 $5.50/mg +54% In stock View
Strand Bio 30/100* Semax 10 mg $55 $5.50/mg +54% — View
Pure Peptide Labs 90/100 Semax 5 mg $30 $5.99/mg +67% In stock View
BioInfinity Lab 58/100* Semax 10 mg $60 $6.00/mg +68% In stock View
Protide Health 75/100 Semax 10mg 10 mg $60 $6.00/mg +68% In stock View
Risynth Bio 47/100* Semax – 5 mg $30 $6.00/mg +68% In stock View
Go Alpha Labs 83/100 Semax (5mg) 5 mg $31 $6.20/mg +73% In stock View
American Peptides 47/100* SEMAX 10 mg $65 $6.50/mg +82% In stock View
Royal Peptides FDA warning letter, Aug 2026 52/100 Semax 10mg 10 mg $65 $6.50/mg +82% In stock View
BioCollex Research 70/100 SEMAX 10 mg $75 $7.50/mg +110% In stock View
Sports Technology Labs 48/100* Semax 10mg 10 mg $80 $8.00/mg +123% In stock View
Alpha Gen 55/100* Semax 10 mg $83 $8.32/mg +132% — View

Transparency is our score out of 100 for how much a vendor makes public about itself. It isn't a purity test.

Prices come from each vendor's public product feed and were last fetched Oct 15, 2026. They exclude shipping and discounts. $/mg uses the labeled amount, not measured content. $/mg marked * was converted to US dollars from the listed currency at the European Central Bank reference rate. A transparency score marked * is based on fewer than six checks; checks we couldn't complete score 0. How we compare prices.

Before you compare on price alone

A low price is only a bargain if the vial holds what the label says, and a high one doesn't prove quality: only an independent lab test shows what's in a vial. Check the vendor's latest batch certificate of analysis (how to read one), and see our Semax overview for what's known about the compound.

Semax compared with similar peptides

Is Semax legal? Status by market

A summary of official sources, checked Oct 14, 2026. Not legal advice.

United States
Not FDA-approved; FDA staff recommended against adding semax to the 503A compounding list, and although FDA's advisory committee voted to recommend it in July 2026, FDA has not added it [1][2][3].
United Kingdom
No UK-licensed medicine containing semax appears in the MHRA products database [4].
European Union
No medicine containing semax is authorized in the EU, according to EMA's central and Article 57 product data [5][6].
Canada
No product containing semax appears in Health Canada's Drug Product Database [7].
Australia
Semax is not named in Australia's Poisons Standard (October 2026) [8].
Sport (WADA)
Not named on the 2026 Prohibited List [9].

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