Price check · October 2026

Semax prices

A synthetic seven-amino-acid peptide. Listed as vials and as nasal-spray formats; acetylated variants are listed separately by some suppliers.

38 suppliers · 84 listings · prices read October 2026 · Editorial scores, not user reviews

Semax turns up at 38 of the suppliers we rate, 84 listings between them once you count every size. For the 10 mg vial most shops carry, expect to pay about $38.09; the lowest price we found was $21.88 at Alpha Peptides, which scores 6.7 with our editors and shows a certificate right on the product page. The 5 mg size runs about $26.61, $18.99 at the low end. That bottom price is well under half the typical figure, so read the certificate before you look at the cart total.

5 mg$26.61typical of 9 · from $18.99

10 mg · most common$38.09typical of 21 · from $21.88

Every Semax listing we found

25 of 84 show a certificate on the page (30%). Pricing is 10% of the score; how we score.

Download the table

Supplier	Listing	Size	Price	Certificate
Eternal Peptideseternalpeptides.com 2.5	Semax	5 mg	$18.99$3.80/mg	Not on the page	Open
Alpha Labs Peptidesgoalphalabs.com 6.7	Semax (5mg)	5 mg	$21.69$4.34/mg	On the page	Open
Evolve Peptidesevolvepeptides.com 6.8	Semax (5mg)	5 mg	$25$5.00/mg	Not on the page	Open
UK Peptidesuk-peptides.com 5.2	Semax 5mg	5 mg	$25.34listed £19.95$5.07/mg	On the page	Open
Direct Peptidesdirect-peptides.com 4.4	Semax Peptide Vial – 5mg vial	5 mg	$26.61listed £20.95$5.32/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	SEMAX PEPTIDE 5MG/10MG/30MG VIAL - 5 Milligrams Peptide Vial	5 mg	$29.99$6.00/mg	Not on the page	Open
Direct Peptidesdirect-peptides.com 4.4	Semax Peptide Vial – 5mg vial kit_bac water & needles	5 mg	$38.01listed £29.93$7.60/mg	Not on the page	Open
Loti Labslotilabs.com 5.9	Semax 5mg	5 mg	$39.99$8.00/mg	Not on the page	Open
Enhanced Peptidesenhancedpeptides.com 4.2	Semax 5mg/10mg - 5mg	5 mg	$50$10.00/mg	Not on the page	Open
Alpha Peptidesalpha-peptides.com 6.7	SEMAX – MG Amount: 10 MG	10 mg	$21.88$2.19/mg	On the page	Open
Eternal Peptideseternalpeptides.com 2.5	Semax	10 mg	$29.99$3.00/mg	Not on the page	Open
Geo Peptidesgeopeptides.com 5.1	Semax 10mg	10 mg	$29.99$3.00/mg	Not on the page	Open
Alpha Labs Peptidesgoalphalabs.com 6.7	Semax (10mg)	10 mg	$31.49$3.15/mg	On the page	Open
Blue Sky Peptideblueskypeptide.com 5.7	SEMAX 10mg	10 mg	$32.97$3.30/mg	Not on the page	Open
NuScience Peptidesnusciencepeptides.com 5.2	Semax NA 10mg	10 mg	$34.99$3.50/mg	On the page	Open
Atomik Labzatomiklabz.com 4.2	Semax – 10mg (Current batch tested at 12mg)	10 mg	$35$3.50/mg	On the page	Open
Evolve Peptidesevolvepeptides.com 6.8	N-Acetyl Semax Amidate 10 mg	10 mg	$35$3.50/mg	Not on the page	Open
Peptide Crafterspeptidecrafters.com 3.6	Semax (10mg)	10 mg	$35$3.50/mg	Not on the page	Open
Research Peptidesresearchpeptides.com 3.6	Semax 10mg	10 mg	$37.99$3.80/mg	On the page	Open
Receptor Chemreceptorchem.co.uk 5.2	Semax (Size: 10mg \| 99% Purity)	10 mg	$38.09listed £29.99$3.81/mg	Not on the page	Open
Koi Peptideskoipeptides.com 7.1	Semax	10 mg	$39.95$4.00/mg	On the page	Open
Polaris Peptidespolarispeptides.com 2.7	N-Acetyl Semax Amidate 10mg	10 mg	$40$4.00/mg	Not on the page	Open
Modern Aminosmodernaminos.com 1.6	NA-Semax (N-Acetyl Semax) - Semax 10MG	10 mg	$42$4.20/mg	Not on the page	Open
Prime Peptidesprimepeptides.co 5.9	Semax - : 10mg	10 mg	$45$4.50/mg	On the page	Open
Receptor Chemreceptorchem.co.uk 5.2	N-Acetyl Semax Amidate (Size: 10mg \| 99% Purity)Out of stock	10 mg	$48.25listed £37.99$4.83/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	SEMAX PEPTIDE 5MG/10MG/30MG VIAL - 10 Milligrams Peptide Vial	10 mg	$49.99$5.00/mg	Not on the page	Open
Ascension Peptidesascensionpeptides.com 7.5	Semax (10MG)	10 mg	$50$5.00/mg	On the page	Open
Enhanced Peptidesenhancedpeptides.com 4.2	Semax 5mg/10mg - 10mg	10 mg	$65$6.50/mg	Not on the page	Open
Sports Technology Labssportstechnologylabs.com 6.8	Semax 10mg	10 mg	$79.99$8.00/mg	On the page	Open
Direct Peptidesdirect-peptides.com 4.4	Semax Peptide Vial – 2mg vial	2 mg	$11.91listed £9.38$5.96/mg	Not on the page	Open
Direct Peptidesdirect-peptides.com 4.4	Semax Peptide Vial – 2mg vial kit_bac water & needles	2 mg	$23.32listed £18.36$11.66/mg	Not on the page	Open
Direct Peptidesdirect-peptides.com 4.4	Semax Pre-Mixed Pen Peptide 6mg – 2 pre-mixed cartridgesbulk	6 mg	$59.77listed £47.06$9.96/mg	Not on the page	Open
Direct Peptidesdirect-peptides.com 4.4	Semax Pre-Mixed Pen Peptide 6mg – 3 pre-mixed cartridgesbulk	6 mg	$80.66listed £63.51$13.44/mg	Not on the page	Open
BioLongevity Labsbiolongevitylabs.com 7.0	N-Acetyl Semax Amidate (20mg)	20 mg	$64.97$3.25/mg	Not on the page	Open
Biotech Peptidesbiotechpeptides.com 6.3	Semax (25mg)	25 mg	$53$2.12/mg	Not on the page	Open
Biotech Peptidesbiotechpeptides.com 6.3	N-Acetyl Semax (25mg)	25 mg	$57$2.28/mg	On the page	Open
Core Peptidescorepeptides.com 7.2	N-Acetyl Semax - 25MG	25 mg	$60$2.40/mg	On the page	Open
Core Peptidescorepeptides.com 7.2	Semax - 25MG	25 mg	$63$2.52/mg	Not on the page	Open
Peptide Prospeptidepros.net 6.5	Semax 30mg	30 mg	$58.25$1.94/mg	Not on the page	Open
Paramount Peptidesparamountpeptides.com 7.2	Semax (30mg)	30 mg	$68$2.27/mg	On the page	Open
Skye Peptidesskyepeptides.com 2.4	Semax 30 mg	30 mg	$69$2.30/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	SEMAX PEPTIDE LIQUID SPRAY 15ML BOTTLE - 30 Milligrams Liquid Spray	30 mg	$69.99$2.33/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	N-ACETYL SEMAX AMIDATE PEPTIDE LIQUID SPRAY 15ML BOTTLE - 30 Milligrams Liquid Spray	30 mg	$69.99$2.33/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	SEMAX PEPTIDE 5MG/10MG/30MG VIAL - 30 Milligrams Peptide Vial	30 mg	$69.99$2.33/mg	Not on the page	Open
Swiss Chemsswisschems.is 5.9	Semax 30mg – Semax 30mg: 1 vial	30 mg	$73.95$2.47/mg	Not on the page	Open
Direct Peptidesdirect-peptides.com 4.4	Semax Peptide Vial – 30mg vial	30 mg	$76.20listed £60$2.54/mg	Not on the page	Open
Licensed Peptideslicensedpeptides.com 8.2	Semax 30mg - 30mg, 1 pack	30 mg	$76.99$2.57/mg	Not on the page	Open
Liberty Peptideslibertypeptides.com 6.1	N- Acetyl Semax (30mg)	30 mg	$85$2.83/mg	On the page	Open
Direct Peptidesdirect-peptides.com 4.4	Semax Peptide Vial – 30mg vial kit_bac water & needles	30 mg	$87.60listed £68.98$2.92/mg	Not on the page	Open
Skye Peptidesskyepeptides.com 2.4	N-acetyl Semax Amidate 30 mg	30 mg	$89$2.97/mg	Not on the page	Open
Atomik Labzatomiklabz.com 4.2	Semax – 30mg	30 mg	$90$3.00/mg	On the page	Open
Umbrella Labsumbrellalabs.is 5.9	SEMAX PEPTIDE LIQUID SPRAY 15ML BOTTLE - 90 Milligrams Liquid SprayOut of stock	90 mg	$99.99$1.11/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	N-ACETYL SEMAX AMIDATE PEPTIDE LIQUID SPRAY 15ML BOTTLE - 90 Milligrams Liquid Spray	90 mg	$99.99$1.11/mg	Not on the page	Open
Pure Peptide Labspurepeptidelabs.shop 7.2	Semax	Size not stated	$29.95	Not on the page	Open
Extreme Peptidesextremepeptides.com 4.6	Semax	Size not stated	$39.99	Not on the page	Open
Peptide Warehousepeptide-warehouse.com 6.3	Semax	Size not stated	$39.99	Not on the page	Open
Modern Aminosmodernaminos.com 1.6	NA-Semax (N-Acetyl Semax) - NA-Semax	Size not stated	$42	Not on the page	Open
Pure Peptide Labspurepeptidelabs.shop 7.2	NA Semax	Size not stated	$59.95	Not on the page	Open
Modern Aminosmodernaminos.com 1.6	NA-Semax (N-Acetyl Semax) - AdamaxOut of stock	Size not stated	$74	Not on the page	Open
Peptide Warehousepeptide-warehouse.com 6.3	NA Semax	Size not stated	$74.99	Not on the page	Open
Peptide Warehousepeptide-warehouse.com 6.3	NA Semax Amidate	Size not stated	$83.99	On the page	Open
Verified Peptidesverifiedpeptides.com 6.0	N-Acetyl Semax PeptideOut of stock	Size not stated	$89	On the page	Open
USA Peptidesusapeptides.com 2.7	Semax Injection	Size not stated	$125	Not on the page	Open
Alpha Labs Peptidesgoalphalabs.com 6.7	Semax (5mg) (10 Vials)bulk	5 mg × 10	$16.31each · $163.09 the pack$3.26/mg	On the page	Open
Direct Peptidesdirect-peptides.com 4.4	Semax Pre-Mixed Pen Peptide 6mg – 1 single mixed cartridgepen	6 mg	$29.88listed £23.53$4.98/mg	Not on the page	Open
Direct Peptidesdirect-peptides.com 4.4	Semax Pre-Mixed Pen Peptide 6mg – 1 Pre Mixed Cartridge and Kitpen	6 mg	$64.17listed £50.53$10.70/mg	Not on the page	Open
Alpha Labs Peptidesgoalphalabs.com 6.7	Semax (10mg) (10 Vials)bulk	10 mg × 10	$23.80each · $237.99 the pack$2.38/mg	On the page	Open
Atomik Labzatomiklabz.com 4.2	BULK PACK – Semax 10mg (Current batch tested at 12mg) (10 VIALS)bulk	10 mg × 10	$31.50each · $315 the pack$3.15/mg	On the page	Open
Atomik Labzatomiklabz.com 4.2	Semax 10mg (Current batch tested at 12mg) Air Dispersal Kitnasal	10 mg	$46$4.60/mg	On the page	Open
Atomik Labzatomiklabz.com 4.2	BULK PACK – Semax 30mg (10 VIALS)bulk	30 mg × 10	$81each · $810 the pack$2.70/mg	On the page	Open
Atomik Labzatomiklabz.com 4.2	Semax 30mg Air Dispersal Kitnasal	30 mg	$98$3.27/mg	On the page	Open
Licensed Peptideslicensedpeptides.com 8.2	Semax Atomized Solution 30ml - 50mg, 1 packnasal	50 mg	$129.99$2.60/mg	Not on the page	Open
Licensed Peptideslicensedpeptides.com 8.2	Semax 30mg - 30mg, 3 packOut of stock	90 mg × 3	$63.90each · $191.70 the pack$2.13/mg	Not on the page	Open
Nexaphnexaph.com 6.4	N-Acetyl Semax Amidate 10mg (10 vials/kit)	100 mg × 10	$15.20each · $152 the pack$1.52/mg	Not on the page	Open
Licensed Peptideslicensedpeptides.com 8.2	Semax 30mg - 30mg, 5 packOut of stock	150 mg × 5	$53.89each · $269.45 the pack$1.80/mg	Not on the page	Open
Licensed Peptideslicensedpeptides.com 8.2	Semax Atomized Solution 30ml - 50mg, 3 packnasalOut of stock	150 mg × 3	$107.99each · $323.97 the pack$2.16/mg	Not on the page	Open
Licensed Peptideslicensedpeptides.com 8.2	Semax Atomized Solution 30ml - 50mg, 5 packnasalOut of stock	250 mg × 5	$90.99each · $454.95 the pack$1.82/mg	Not on the page	Open
Licensed Peptideslicensedpeptides.com 8.2	Semax 30mg - 30mg, 10 packOut of stock	300 mg × 10	$46.19each · $461.94 the pack$1.54/mg	Not on the page	Open
Swiss Chemsswisschems.is 5.9	Semax 30mg – Semax 30mg: KIT (10 vials)bulkOut of stock	300 mg × 10	$73.95each · $739.50 the pack$2.47/mg	Not on the page	Open
Licensed Peptideslicensedpeptides.com 8.2	Semax Atomized Solution 30ml - 50mg, 10 packnasalOut of stock	500 mg × 10	$77.99each · $779.90 the pack$1.56/mg	Not on the page	Open
Alpha Labs Peptidesgoalphalabs.com 6.7	Semax Liquid Spraynasal	Size not stated	$37.09	On the page	Open
Amino Asylumaminoasylumofficial.com 3.6	N-Acetyl-Semax Spray \| Amino Asylum Research Peptidenasal	Size not stated	$44.99	Not on the page	Open
Direct Peptidesdirect-peptides.com 4.4	Semax Nasal Spray – 15mlnasal	Size not stated	$48.26listed £38	Not on the page	Open
Direct Peptidesdirect-peptides.com 4.4	Semax Nasal Spray – 30mlnasal	Size not stated	$90.17listed £71	Not on the page	Open

Prices are what the product page showed during our October 2026 check, before coupons and shipping. Pounds were converted to dollars at an approximate rate; the listed figure is shown beside it. The small per-milligram figure is for comparing odd sizes, not for shopping by. Every listing is sold for laboratory research use only. Spotted a change? Tell us.

Questions

Why does a 10 mg vial of Semax cost $21.88 at one shop and far more at another?

Part of it is paperwork: a shop paying an outside laboratory for every lot has a cost the cheapest shop may not. Part of it is volume. And part of it is what each shop thinks you will pay. The typical price tells you what the market has settled on; the score tells you what, if anything, the extra money buys.

Is the cheapest Semax listing safe to order?

We cannot tell you that from a price list, and neither can anyone else. What we can tell you is whether the shop lets you open a certificate before you pay, whether it has a public record worth worrying about, and how it scores against the field. 25 of the 84 listings here show a certificate right on the product page, which is the least you should ask for.

How current are these prices?

Each one was read from the supplier's own product page during our October 2026 check, before coupons and shipping. Shops move prices without telling anyone, so confirm in the cart. Prices listed in pounds were converted to dollars at an approximate rate. The whole table is yours to download at /data/prices.csv.