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All peptides · Cognitive & nootropic

Semax

Cognitive & nootropic
ACTH(4-10) analog

A seven-amino-acid peptide based on a fragment of ACTH, given as nasal drops. Raises BDNF and is studied for stroke recovery, attention and memory.

Approved in Russia for stroke and cognitive disorders; not approved in the US.

Look it up on Wikipedia

161 listings across 85 independently tested vendors, ranked by price per milligram after coupon codes anyone can use. Vendors you can only order from by message are hidden.

Cheapest right now
$0.600 per mg
Cartman Gear
LOBSTER SEMAX 10MG KIT [Lobster Intl]
$60.00 for 10 × 10 mg = 100 mg
Metascore 83 low confidenceFinnrick 80%TitrateLabNo report for thisConfirmed with lab: 3 of 3Online checkout
Go to cartmangear.com

Some links here are affiliate links: if you buy through one, this site may earn a commission at no extra cost to you. Prices, rankings and plans are worked out the same way whether or not a vendor pays one.

US compoundingRecommended for compounding, not legal yet

FDA's Pharmacy Compounding Advisory Committee voted on July 23-24, 2026 to recommend adding it to the 503A bulks list (FDA staff had recommended against). The vote isn't binding: compounding stays illegal until FDA accepts it and finishes proposed and final rulemaking, which typically takes a year or more. Vote: 8-5 (evaluated for cerebral ischemia, migraine, trigeminal neuralgia).

Daily price tracking started October 7, 2026; a price-history chart appears here once a few days have been collected.

VendorTrustListingVialsPricePer mg
Cartman Gear
#24 by metascore
Metascore 83 low confidenceFinnrick 80%TitrateLabNo report for thisConfirmed with lab: 3 of 3Online checkout
LOBSTER SEMAX 10MG KIT [Lobster Intl] 10 × 10 mg = 100 mg $60.00
$6.00 per vial
$0.600 Buy
Uther
#62 by metascore · China
Metascore 79Finnrick 64%Bought vials 105% of label · 73 testsTitrateLabNo report for thisOnline checkout
Semax 10mg (10 Vials / Kit) 10 × 10 mg = 100 mg $60.00
$6.00 per vial
$0.600 Buy
Andy Peps Studio
#64 by metascore · China
Metascore 79Finnrick 73%Bought vials 102% of label · 42 testsNo report for thisOnline checkout
XA10 Semax 10mg * 10 vials 10 × 10 mg = 100 mg $70.00
$7.00 per vial
$0.700 Buy
Baohua Dongnuo Biotechnology BHD
#77 by metascore · China
Metascore 78Finnrick 71%Bought vials 101% of label · 20 testsNo report for thisOnline checkout
XA10 Semax 10mg * 10 vials 10 × 10 mg = 100 mg $70.00
$7.00 per vial
$0.700 Buy
LN Peptides
#254 by metascore · China
Metascore 71Finnrick 72%Bought vials 99% of label · 39 testsTitrateLabNo report for thisOnline checkout
XA10 Semax 10mg * 10 vials 10 × 10 mg = 100 mg $70.00
$7.00 per vial
$0.700 Buy
BeiBangAn
#28 by metascore · China
Metascore 83Finnrick 68%Bought vials 102% of label · 70 testsNo report for thisOnline checkout
XA10 Semax 10mg * 10 vials 10 × 10 mg = 100 mg $70.00
$7.00 per vial
$0.700 Buy
Shanghai Wibson Biotechnology WBS
#263 by metascore · China
Metascore 70Finnrick 65%Bought vials 99% of label · 58 testsNo report for thisOnline checkout
Semax 10mg*10vials (China warehouse) [jinjier] 10 × 10 mg = 100 mg $70.00
$7.00 per vial
$0.700 Buy
Aavant Research
#2 by metascore · US
Metascore 90Finnrick 86%Bought vials 103% of label · 24 testsTitrateLabNo report for thisOnline checkout
Semax 10mg 10 × 10 mg = 100 mg $75.00
$7.50 per vial
$0.750 Buy
BFF Chem
#76 by metascore
Metascore 78 medium confidenceFinnrick 78%Bought vials 94% of label · 4 testsTitrateLabNo report for thisOnline checkout
Semax Semax-10 10mg (kit of 10 vials) 10 × 10 mg = 100 mg $75.00
$7.50 per vial
$0.750 Buy
Bfflist AMO
#22 by metascore
Metascore 84Finnrick 72%Bought vials 94% of label · 72 testsNo report for thisOnline checkout
Semax Semax-10 10mg 10 × 10 mg = 100 mg $75.00
$7.50 per vial
$0.750 Buy
Shanghai Wibson Biotechnology WBS
#263 by metascore · China
Metascore 70Finnrick 65%Bought vials 99% of label · 58 testsNo report for thisOnline checkout
Semax 10mg * 10 vials (US warehouse 01) [jinjier] 10 × 10 mg = 100 mg $75.00
$7.50 per vial
$0.750 Buy
Shanghai Wibson Biotechnology WBS
#263 by metascore · China
Metascore 70Finnrick 65%Bought vials 99% of label · 58 testsNo report for thisOnline checkout
Semax 10mg*10vials (US Warehouse 02) [jinjier] 10 × 10 mg = 100 mg $75.00
$7.50 per vial
$0.750 Buy
Huatai Peptide
#15 by metascore · China
Metascore 85Finnrick 72%Bought vials 97% of label · 12 testsTitrateLabNo report for thisConfirmed with lab: 15 of 15Online checkout
Semax 10Bottlex10mg 10 × 10 mg = 100 mg $77.00
$7.70 per vial
$0.770 Buy
Mai Peptide
#35 by metascore · China
Metascore 82Finnrick 60%Bought vials 101% of label · 107 testsTitrateLabLab 99.6% pure · 106% of labelConfirmed with lab: 26 of 26Online checkout
Semax 10mg*10vials 10 × 10 mg = 100 mg $80.00
$8.00 per vial
$0.800 Buy
Shanghai Wibson Biotechnology WBS
#263 by metascore · China
Metascore 70Finnrick 65%Bought vials 99% of label · 58 testsNo report for thisOnline checkout
Semax 5mg*10vials (China warehouse) [jinjier] 10 × 5 mg = 50 mg $40.00
$4.00 per vial
$0.800 Buy
Qingdao Sigma Chemical QSC
#69 by metascore
Metascore 78Finnrick 64%Bought vials 103% of label · 47 testsLab reports (image)Online checkout
Semax 30mg | 20-Vial Kit | Cognitive Enhancement 20 × 30 mg = 600 mg $490.00
$24.50 per vial
$0.817 Buy
Bulk Peptide Wholesale
#29 by metascore
Metascore 82 medium confidenceFinnrick 68%Bought vials 103% of label · 7 testsTitrateLab · PeptideBaseNo report for thisOnline checkout
SEMAX 30 mg (10 vials) 10 × 30 mg = 300 mg $250.00
$25.00 per vial
$0.833 Buy
Qingdao Sigma Chemical QSC
#69 by metascore
Metascore 78Finnrick 64%Bought vials 103% of label · 47 testsLab reports (image)Online checkout
NA-Semax Amidate 30mg | 20-Vial Kit | 600mg Total | N-Acetylated Semax Derivative 20 × 30 mg = 600 mg $510.00
$25.50 per vial
$0.850 Buy
Qingdao Sigma Chemical QSC
#69 by metascore
Metascore 78Finnrick 64%Bought vials 103% of label · 47 testsLab reports (image)Online checkout
Semax 30mg | 10-Vial Kit | Cognitive Enhancement 10 × 30 mg = 300 mg $270.00
$27.00 per vial
$0.900 Buy
Qingdao Sigma Chemical QSC
#69 by metascore
Metascore 78Finnrick 64%Bought vials 103% of label · 47 testsLab reports (image)Online checkout
NA-Semax Amidate 30mg | 10-Vial Kit | 300mg Total | N-Acetylated Semax Derivative 10 × 30 mg = 300 mg $280.00
$28.00 per vial
$0.933 Buy
Shanghai Wibson Biotechnology WBS
#263 by metascore · China
Metascore 70Finnrick 65%Bought vials 99% of label · 58 testsNo report for thisOnline checkout
Semax 10mg*10vials (China warehouse) [wbspeptide.com] 10 × 10 mg = 100 mg $95.00
$9.50 per vial
$0.950 Buy
Huaian Dinglin Trading
#268 by metascore · China
Metascore 70Finnrick 61%Bought vials 97% of label · 10 testsTitrateLabNo report for thisOnline checkout
Semax 5mgx10vials 10 × 5 mg = 50 mg $48.00
$4.80 per vial
$0.960 Buy
Aavant Research
#2 by metascore · US
Metascore 90Finnrick 86%Bought vials 103% of label · 24 testsTitrateLabNo report for thisOnline checkout
Semax 5mg 10 × 5 mg = 50 mg $50.00
$5.00 per vial
$1.00 Buy
Peptides Book
#186 by metascore
Metascore 73 medium confidenceFinnrick 81%Bought vials 92% of label · 3 testsTitrateLabNo public reportsOnline checkout
Semax 10mg*10vials 10 × 10 mg = 100 mg $100.00
$10.00 per vial
$1.00 Buy
Huatai Peptide
#15 by metascore · China
Metascore 85Finnrick 72%Bought vials 97% of label · 12 testsTitrateLabNo report for thisConfirmed with lab: 15 of 15Online checkout
Semax 10Bottlex5mg 10 × 5 mg = 50 mg $50.00
$5.00 per vial
$1.00 Buy
Lipeptides
#159 by metascore · China
Metascore 73Finnrick 60%Bought vials 102% of label · 72 testsTitrateLabNo report for thisOnline checkout
S3 (Semax) 10mg*10vials 10 × 10 mg = 100 mg $100.00
$10.00 per vial
$1.00 Buy
Lipeptides
#159 by metascore · China
Metascore 73Finnrick 60%Bought vials 102% of label · 72 testsTitrateLabNo report for thisOnline checkout
XA10 (Semax) 10mg*10vials 10 × 10 mg = 100 mg $100.00
$10.00 per vial
$1.00 Buy
Shanghai Wibson Biotechnology WBS
#263 by metascore · China
Metascore 70Finnrick 65%Bought vials 99% of label · 58 testsNo report for thisOnline checkout
Semax 5mg*10vials (US Warehouse 02) [jinjier] 10 × 5 mg = 50 mg $50.00
$5.00 per vial
$1.00 Buy
Shanghai Wibson Biotechnology WBS
#263 by metascore · China
Metascore 70Finnrick 65%Bought vials 99% of label · 58 testsNo report for thisOnline checkout
Semax 10mg*10vials (US warehouse 01) [wbspeptide.com] 10 × 10 mg = 100 mg $100.00
$10.00 per vial
$1.00 Buy
Shanghai Wibson Biotechnology WBS
#263 by metascore · China
Metascore 70Finnrick 65%Bought vials 99% of label · 58 testsNo report for thisOnline checkout
Semax 10mg*10vials (US Warehouse 02) [wbspeptide.com] 10 × 10 mg = 100 mg $100.00
$10.00 per vial
$1.00 Buy
Peptide Partners
#9 by metascore
Metascore 86Finnrick 66%Bought vials 97% of label · 90 testsTitrateLab · PeptideBase · Peptide CriticLab 99.5% pureOnline checkout
Semax 30mg x 10 vials (300mg pack) 10 × 30 mg = 300 mg $310.50
$31.05 per vial
$1.04 Buy
BFF Chem
#76 by metascore
Metascore 78 medium confidenceFinnrick 78%Bought vials 94% of label · 4 testsTitrateLabNo report for thisOnline checkout
Semax Semax-5 5mg (kit of 10 vials) 10 × 5 mg = 50 mg $55.00
$5.50 per vial
$1.10 Buy
Bfflink
#164 by metascore
Metascore 73Finnrick 75%Bought vials 97% of label · 40 testsBought vials underdosed: 32% vs 0% in own COAsTitrateLabNo report for thisOnline checkout
Semax Semax-5 5mg (kit of 10 vials) 10 × 5 mg = 50 mg $55.00
$5.50 per vial
$1.10 Buy
Andy Peps Studio
#64 by metascore · China
Metascore 79Finnrick 73%Bought vials 102% of label · 42 testsNo report for thisOnline checkout
XA5 Semax 5mg * 10 vials 10 × 5 mg = 50 mg $55.00
$5.50 per vial
$1.10 Buy
Bfflist AMO
#22 by metascore
Metascore 84Finnrick 72%Bought vials 94% of label · 72 testsNo report for thisOnline checkout
Semax Semax-5 5mg 10 × 5 mg = 50 mg $55.00
$5.50 per vial
$1.10 Buy
Baohua Dongnuo Biotechnology BHD
#77 by metascore · China
Metascore 78Finnrick 71%Bought vials 101% of label · 20 testsNo report for thisOnline checkout
XA5 Semax 5mg * 10 vials 10 × 5 mg = 50 mg $55.00
$5.50 per vial
$1.10 Buy
LN Peptides
#254 by metascore · China
Metascore 71Finnrick 72%Bought vials 99% of label · 39 testsTitrateLabNo report for thisOnline checkout
XA5 Semax 5mg * 10 vials 10 × 5 mg = 50 mg $55.00
$5.50 per vial
$1.10 Buy
BeiBangAn
#28 by metascore · China
Metascore 83Finnrick 68%Bought vials 102% of label · 70 testsNo report for thisOnline checkout
XA5 Semax 5mg * 10 vials 10 × 5 mg = 50 mg $55.00
$5.50 per vial
$1.10 Buy
HkRoids
#210 by metascore · US?
Metascore 72Finnrick 58%Bought vials 102% of label · 73 testsTitrateLabCOA concernsConfirmed with lab: 14 of 14Online checkout
Semax – High-Quality Lyophilized Peptide 10mg (10 vials) Wholesale 10 × 10 mg = 100 mg $110.00
$11.00 per vial
$1.10 Buy
The lab-results page shows reports issued to other US brands (OPS Aminos, Research Grade Peptides, etc.) with those brands' labelled vials. HKRoids says they are its wholesale customers' tests, but no lot or brand link can be verified. Checked 2026-10-08. How we check
Shanghai Wibson Biotechnology WBS
#263 by metascore · China
Metascore 70Finnrick 65%Bought vials 99% of label · 58 testsNo report for thisOnline checkout
Semax 5mg*10vials (China warehouse) [wbspeptide.com] 10 × 5 mg = 50 mg $55.00
$5.50 per vial
$1.10 Buy
Chimera Peptides
#19 by metascore
Metascore 84Finnrick 87%Bought vials 101% of label · 27 testsTitrateLab · Peptide CriticNo report for thisOnline checkout
Semax 11 mg x 10vials
20% off with code (paying with crypto)
10 × 11 mg = 110 mg $123.00
20% off with code (paying with crypto)
$12.30 per vial
$1.12 Buy
Domestic Peps
#52 by metascore
Metascore 80 medium confidenceFinnrick 76%TitrateLabLab 99.1% pure · 111% of labelConfirmed with lab: 34 of 34Account needed
SEMAX-10mg 10/FULL KIT (silver/blue cap) 10 × 10 mg = 100 mg $112.50
$11.25 per vial
$1.13 Buy
Hangzhou Youngpeptide Biotechnology HYB
#153 by metascore
Metascore 74Finnrick 71%Bought vials 100% of label · 23 testsLab reports (image)Online checkout
Semax 10 mg – 10 Vials 10 × 10 mg = 100 mg $115.00
$11.50 per vial
$1.15 Buy
Lipeptides
#159 by metascore · China
Metascore 73Finnrick 60%Bought vials 102% of label · 72 testsTitrateLabNo report for thisOnline checkout
S3 (Semax) 5mg*10vials 10 × 5 mg = 50 mg $60.00
$6.00 per vial
$1.20 Buy
Lipeptides
#159 by metascore · China
Metascore 73Finnrick 60%Bought vials 102% of label · 72 testsTitrateLabNo report for thisOnline checkout
XA10 (Semax) 5mg*10vials 10 × 5 mg = 50 mg $60.00
$6.00 per vial
$1.20 Buy
Mai Peptide
#35 by metascore · China
Metascore 82Finnrick 60%Bought vials 101% of label · 107 testsTitrateLabLab 99.6% pure · 106% of labelConfirmed with lab: 26 of 26Online checkout
Semax 5mg*10vials 10 × 5 mg = 50 mg $60.00
$6.00 per vial
$1.20 Buy
Peptide Partners
#9 by metascore
Metascore 86Finnrick 66%Bought vials 97% of label · 90 testsTitrateLab · PeptideBase · Peptide CriticLab 99.5% pureOnline checkout
Semax 30mg x 5 vials (150mg pack) 5 × 30 mg = 150 mg $182.25
$36.45 per vial
$1.22 Buy
HkRoids
#210 by metascore · US?
Metascore 72Finnrick 58%Bought vials 102% of label · 73 testsTitrateLabCOA concernsConfirmed with lab: 14 of 14Online checkout
Semax – High-Quality Lyophilized Peptide 10mg (10 vials) Wholesale 1kit, dose: 5mg/vial 10 × 5 mg = 50 mg $63.00
$6.30 per vial
$1.26 Buy
Shanghai Wibson Biotechnology WBS
#263 by metascore · China
Metascore 70Finnrick 65%Bought vials 99% of label · 58 testsNo report for thisOnline checkout
Semax 5mg*10vials (US Warehouse 02) [wbspeptide.com] 10 × 5 mg = 50 mg $65.00
$6.50 per vial
$1.30 Buy
Peptides Book
#186 by metascore
Metascore 73 medium confidenceFinnrick 81%Bought vials 92% of label · 3 testsTitrateLabNo public reportsOnline checkout
Semax 5mg*10vials 10 × 5 mg = 50 mg $67.00
$6.70 per vial
$1.34 Buy
Peptide Partners
#9 by metascore
Metascore 86Finnrick 66%Bought vials 97% of label · 90 testsTitrateLab · PeptideBase · Peptide CriticLab 99.5% pureOnline checkout
Semax 30mg x 2 vials (60mg pack) 2 × 30 mg = 60 mg $81.00
$40.50 per vial
$1.35 Buy
Nexaph
#90 by metascore
Metascore 76Finnrick 57%PepIndex 19/100Bought vials 109% of label · 285 testsTitrateLab · PeptideBaseNo report for thisOnline checkout
N-Acetyl Semax Amidate 10mg (10 vials/kit) 10 × 10 mg = 100 mg $152.00
$15.20 per vial
$1.52 Buy
Peptagon
#31 by metascore
Metascore 82 medium confidenceFinnrick UnratedBought vials 102% of label · 3 testsTitrateLabLab 99.6% pure · 117% of labelConfirmed with lab: 38 of 38Online checkout
Semax Research Peptide – 30mg 1 × 30 mg $50.00 $1.67 Buy
PepClub USA
#37 by metascore
Metascore 81 medium confidenceFinnrick 81%Bought vials 87% of label · 4 testsTitrateLabNo report for thisOnline checkout
SEMAX CASE OF 10 VIALS XA10-11MG 10 × 11 mg = 110 mg $185.00
$18.50 per vial
$1.68 Buy
Sunrise BioResearch
#18 by metascore
Metascore 85 medium confidenceFinnrick 81%Bought vials 110% of label · 8 testsTitrateLabLab 99.8% pure · 119% of labelOnline checkout
Semax 10mg x 10vials, 100mg 10 × 10 mg = 100 mg $170.00
$17.00 per vial
$1.70 Buy
Hangzhou Youngpeptide Biotechnology HYB
#153 by metascore
Metascore 74Finnrick 71%Bought vials 100% of label · 23 testsLab reports (image)Online checkout
Semax 5 mg – 10 Vials 10 × 5 mg = 50 mg $85.00
$8.50 per vial
$1.70 Buy
Bulk Peptide Wholesale
#29 by metascore
Metascore 82 medium confidenceFinnrick 68%Bought vials 103% of label · 7 testsTitrateLab · PeptideBaseNo report for thisOnline checkout
SEMAX 10 mg (10 vials) 10 × 10 mg = 100 mg $175.00
$17.50 per vial
$1.75 Buy
Qingdao Sigma Chemical QSC
#69 by metascore
Metascore 78Finnrick 64%Bought vials 103% of label · 47 testsLab reports (image)Online checkout
Semax 10mg | 20-Vial Kit | Cognitive Enhancement 20 × 10 mg = 200 mg $370.00
$18.50 per vial
$1.85 Buy
Liberty Peptides
#63 by metascore · US, DE 19801
Metascore 79Finnrick 53%Bought vials 107% of label · 18 testsTitrateLab · PeptideBaseLab · 103% of labelOnline checkout
Semax (30mg) 1 × 30 mg $56.00 $1.87 Buy
Alpha BioMed
#281 by metascore · US
Metascore 70 low confidenceFinnrick 47%TitrateLabNo report for thisAccount needed
Semax (30mg) 1 × 30 mg $58.00 $1.93 Buy
Alpha Peptides Affiliate
#55 by metascore · US
Metascore 79 low confidenceFinnrick 75%TitrateLab · Peptide CriticLab 99.6% pure · 105% of labelConfirmed with lab: 13 of 13Account needed
SEMAX 10 MG
10% off with code
1 × 10 mg $21.88 $19.69
10% off with code
$1.97
list $2.19
Buy
Chimera Peptides
#19 by metascore
Metascore 84Finnrick 87%Bought vials 101% of label · 27 testsTitrateLab · Peptide CriticNo report for thisOnline checkout
Semax 5mg x 10vials
20% off with code (paying with crypto)
10 × 5 mg = 50 mg $99.00
20% off with code (paying with crypto)
$9.90 per vial
$1.98 Buy
Qingdao Sigma Chemical QSC
#69 by metascore
Metascore 78Finnrick 64%Bought vials 103% of label · 47 testsLab reports (image)Online checkout
Semax 10mg | 10-Vial Kit | Cognitive Enhancement 10 × 10 mg = 100 mg $210.00
$21.00 per vial
$2.10 Buy
Amino Usa
#136 by metascore · US
Metascore 74 medium confidenceFinnrick 32%Bought vials 89% of label · 3 testsTitrateLabNo report for thisAccount needed
N-Acetyl Semax Amidate 30mg 1 × 30 mg $65.00 $2.17 Buy
Domestic Peps
#52 by metascore
Metascore 80 medium confidenceFinnrick 76%TitrateLabLab 99.1% pure · 111% of labelConfirmed with lab: 34 of 34Account needed
SEMAX-10mg 5/HALF KIT (silver/blue cap) 5 × 10 mg = 50 mg $112.50
$22.50 per vial
$2.25 Buy
Paramount Peptides
#133 by metascore · US CA
Metascore 74Finnrick 64%PepIndex 55/100Bought vials 114% of label · 65 testsTitrateLab · Peptide CriticNo report for thisOnline checkout
Semax (30mg) 1 × 30 mg $68.00 $2.27 Buy
Skye Peptides
#72 by metascore · US: CA
Metascore 78Finnrick 57%Bought vials 114% of label · 92 testsTitrateLabNo report for thisConfirmed with lab: 25 of 25Account needed
Semax 30 mg 1 × 30 mg $69.00 $2.30 Buy
Tydes
#41 by metascore · US: NC
Metascore 80Finnrick 68%Bought vials 117% of label · 44 testsTitrateLab · Peptide CriticLab 99.5% pureConfirmed with lab: 16 of 16Online checkout
Semax 30mg 1 × 30 mg $69.99 $2.33 Buy
Core Peptides
#282 by metascore
Metascore 70 medium confidenceFinnrick 76%PepIndex 24/100Bought vials 92% of label · 4 testsTitrateLab · PeptideBase · Peptide Critic · PeptideCheckedNo report for thisOnline checkout
N-Acetyl Semax – 25MG 1 × 25 mg $60.00 $2.40 Buy
Bio Pepz
#98 by metascore · US
Metascore 76 medium confidenceFinnrick 82%Bought vials 110% of label · 4 testsTitrateLabNo report for thisAccount needed
SEMAX 10MG 1 × 10 mg $25.00 $2.50 Buy
Domestic Peps
#52 by metascore
Metascore 80 medium confidenceFinnrick 76%TitrateLabLab 99.1% pure · 111% of labelConfirmed with lab: 34 of 34Account needed
SEMAX-10mg 1 (silver/blue cap) 1 × 10 mg $25.00 $2.50 Buy
My Pure Peptide
#70 by metascore
Metascore 78 medium confidenceFinnrick 72%Bought vials 116% of label · 3 testsTitrateLabLab 99.4% pure · 111% of labelOnline checkout
Semax 10mg 1 × 10 mg $25.00 $2.50 Buy
Amino Usa
#136 by metascore · US
Metascore 74 medium confidenceFinnrick 32%Bought vials 89% of label · 3 testsTitrateLabNo report for thisAccount needed
Semax 30mg 1 × 30 mg $75.00 $2.50 Buy
Core Peptides
#282 by metascore
Metascore 70 medium confidenceFinnrick 76%PepIndex 24/100Bought vials 92% of label · 4 testsTitrateLab · PeptideBase · Peptide Critic · PeptideCheckedNo report for thisOnline checkout
Semax – 25MG 1 × 25 mg $63.00 $2.52 Buy
Sunrise BioResearch
#18 by metascore
Metascore 85 medium confidenceFinnrick 81%Bought vials 110% of label · 8 testsTitrateLabLab 99.8% pure · 119% of labelOnline checkout
Semax 10mg 100mg (10vials) 10 × 10 mg = 100 mg $256.31
$25.63 per vial
$2.56 Buy
RetaOne Labs
#83 by metascore
Metascore 77 medium confidenceFinnrick 71%TitrateLab · PeptideBaseLab 99.6% pure · 114% of labelConfirmed with lab: 20 of 20Account needed
Semax 10mg 1 × 10 mg $26.00 $2.60 Buy
Sunrise BioResearch
#18 by metascore
Metascore 85 medium confidenceFinnrick 81%Bought vials 110% of label · 8 testsTitrateLabLab 99.8% pure · 119% of labelOnline checkout
Semax 10mg 50mg (5vials) 5 × 10 mg = 50 mg $132.20
$26.44 per vial
$2.64 Buy
Orbitrex Peptides
#1 by metascore · US
Metascore 90Finnrick 71%Bought vials 104% of label · 27 testsTitrateLab · PeptideBase · Peptide CriticLab 99.9% pure · 104% of labelOnline checkout
Semax 30mg [Buy 4 Get 1 Free] 1 × 30 mg $79.99 $2.67 Buy
Sunrise BioResearch
#18 by metascore
Metascore 85 medium confidenceFinnrick 81%Bought vials 110% of label · 8 testsTitrateLabLab 99.8% pure · 119% of labelOnline checkout
Semax 10mg 10mg (1vial) 1 × 10 mg $26.98 $2.70 Buy
Atomik Labz Affiliate
#85 by metascore · US. Florida, 33411
Metascore 77Finnrick 69%Bought vials 112% of label · 44 testsTitrateLab · Peptide CriticNo report for thisOnline checkoutCheck vendor
Semax 30mg Ten Pack 10 × 30 mg = 300 mg $810.00
$81.00 per vial
$2.70 Buy
Liberty Peptides
#63 by metascore · US, DE 19801
Metascore 79Finnrick 53%Bought vials 107% of label · 18 testsTitrateLab · PeptideBaseLab · 103% of labelOnline checkout
N- Acetyl Semax (30mg) 1 × 30 mg $85.00 $2.83 Buy
Qingdao Sigma Chemical QSC
#69 by metascore
Metascore 78Finnrick 64%Bought vials 103% of label · 47 testsLab reports (image)Online checkout
Semax 5mg | 20-Vial Kit | Cognitive Enhancement 20 × 5 mg = 100 mg $290.00
$14.50 per vial
$2.90 Buy
NextechLabs
#142 by metascore · US
Metascore 74Finnrick 64%Bought vials 116% of label · 32 testsTitrateLabLab report (image)Online checkout
(10 PACK) Semax – 10mg (10 Vials) 10 × 10 mg = 100 mg $291.77
$29.18 per vial
$2.92 Buy
NextechLabs
#142 by metascore · US
Metascore 74Finnrick 64%Bought vials 116% of label · 32 testsTitrateLabLab report (image)Online checkout
Semax – 10mg 1 × 10 mg $29.25 $2.93 Buy
Verified Peptides
#120 by metascore · US: FL
Metascore 75Finnrick 65%Bought vials 109% of label · 39 testsTitrateLab · PeptideBase · Peptide Critic · PeptideCheckedNo report for thisOnline checkout
N-Acetyl Semax Peptide 1 × 30 mg $89.00 $2.97 Buy
Skye Peptides
#72 by metascore · US: CA
Metascore 78Finnrick 57%Bought vials 114% of label · 92 testsTitrateLabNo report for thisConfirmed with lab: 25 of 25Account needed
N-acetyl Semax Amidate 30 mg 1 × 30 mg $89.00 $2.97 Buy
Eros Peptides
#129 by metascore · US, GA 30339
Metascore 74 medium confidenceFinnrick 77%Bought vials 110% of label · 3 testsTitrateLab · Peptide CriticNo report for thisOnline checkout
Semax 10MG 1 × 10 mg $29.74 $2.97 Buy
Gulf Coast Aminos
#17 by metascore
Metascore 85 medium confidenceFinnrick 81%Bought vials 109% of label · 3 testsTitrateLabLab 99.8% pure · 105% of labelAccount needed
Semax 10mg 1 × 10 mg $29.95 $3.00 Buy
Precision Peptide Co
#107 by metascore · US, Tx 76048
Metascore 75Finnrick 68%Bought vials 106% of label · 20 testsTitrateLab · Peptide CriticNo report for thisOnline checkout
Semax 10mg 1 × 10 mg $29.99 $3.00 Buy
Orbitrex Peptides
#1 by metascore · US
Metascore 90Finnrick 71%Bought vials 104% of label · 27 testsTitrateLab · PeptideBase · Peptide CriticLab 99.9% pure · 104% of labelOnline checkout
Semax 10mg [Buy 4 Get 1 Free] 1 × 10 mg $29.99 $3.00 Buy
Sunrise BioResearch
#18 by metascore
Metascore 85 medium confidenceFinnrick 81%Bought vials 110% of label · 8 testsTitrateLabLab 99.8% pure · 119% of labelOnline checkout
Semax 5mg x 10vials, 50mg 10 × 5 mg = 50 mg $150.00
$15.00 per vial
$3.00 Buy
NextGen Health Affiliate
#7 by metascore · US
Metascore 86 medium confidenceFinnrick 80%PepIndex 96/100Bought vials 96% of label · 6 testsTitrateLabLab 99.8% pure · 103% of labelOnline checkout
Semax 30MG 1 × 30 mg $90.00 $3.00 Buy
Atomik Labz Affiliate
#85 by metascore · US. Florida, 33411
Metascore 77Finnrick 69%Bought vials 112% of label · 44 testsTitrateLab · Peptide CriticNo report for thisOnline checkoutCheck vendor
Semax 30mg 1 × 30 mg $90.00 $3.00 Buy
Glacier Aminos Affiliate
#73 by metascore
SEMAX 10MG (10-Pack) 10 × 10 mg = 100 mg $307.43
$30.74 per vial
$3.07 Buy
Royal Peptides Affiliate
#8 by metascore · US
Metascore 86Finnrick 75%Bought vials 107% of label · 34 testsTitrateLabNo report for thisConfirmed with lab: 3 of 3Online checkout
Semax 10mgx10vials (wholesale)
10% off with code
10 × 10 mg = 100 mg $350.00 $315.00
10% off with code
$31.50 per vial
$3.15
list $3.50
Buy
Atomik Labz Affiliate
#85 by metascore · US. Florida, 33411
Metascore 77Finnrick 69%Bought vials 112% of label · 44 testsTitrateLab · Peptide CriticNo report for thisOnline checkoutCheck vendor
Semax 10mg Ten Pack 10 × 10 mg = 100 mg $315.00
$31.50 per vial
$3.15 Buy
Crush Research Affiliate
#91 by metascore · US
Metascore 76Finnrick 51%Bought vials 107% of label · 17 testsTitrateLabLab 99.8% pureOnline checkout
Semax 10mg — 5-Pack 5 × 10 mg = 50 mg $159.00
$31.80 per vial
$3.18 Buy
Biolongevity Labs
#166 by metascore · US, Akron, OH 44321
Metascore 73Finnrick 71%PepIndex 58/100Bought vials 102% of label · 34 testsTitrateLab · Peptide CriticLab reports (image)Online checkout
N-Acetyl Semax Amidate (20mg) 1 × 20 mg $64.97 $3.25 Buy
PepClub USA
#37 by metascore
Metascore 81 medium confidenceFinnrick 81%Bought vials 87% of label · 4 testsTitrateLabNo report for thisOnline checkout
SEMAX CASE OF 10 VIALS XA5-5M 10 × 5 mg = 50 mg $165.00
$16.50 per vial
$3.30 Buy
Crush Research Affiliate
#91 by metascore · US
Metascore 76Finnrick 51%Bought vials 107% of label · 17 testsTitrateLabLab 99.8% pureOnline checkout
Semax 10mg — 3-Pack 3 × 10 mg = 30 mg $99.00
$33.00 per vial
$3.30 Buy
Elite Research USA Affiliate
#75 by metascore · Us: Tx
Metascore 78Finnrick 58%Bought vials 103% of label · 48 testsTitrateLabNo report for thisConfirmed with lab: 26 of 26Online checkout
Semax 10mg Research Peptide 1 × 10 mg $33.99 $3.40 Buy
Go Alpha Labs Peptides
#51 by metascore · US
Metascore 80Finnrick 52%Bought vials 100% of label · 11 testsTitrateLabNo report for thisConfirmed with lab: 37 of 37Online checkout
Semax (10mg) (10 Vials) 10 × 10 mg = 100 mg $339.99
$34.00 per vial
$3.40 Buy
Qingdao Sigma Chemical QSC
#69 by metascore
Metascore 78Finnrick 64%Bought vials 103% of label · 47 testsLab reports (image)Online checkout
Semax 5mg | 10-Vial Kit | Cognitive Enhancement 10 × 5 mg = 50 mg $170.00
$17.00 per vial
$3.40 Buy
Evolve BioPep
#134 by metascore · US
Metascore 74Finnrick 66%Bought vials 103% of label · 11 testsTitrateLab · Peptide CriticNo report for thisOnline checkout
Semax 10mg | N-Acetyl Amidate 1 × 10 mg $34.99 $3.50 Buy
NextGen Health Affiliate
#7 by metascore · US
Metascore 86 medium confidenceFinnrick 80%PepIndex 96/100Bought vials 96% of label · 6 testsTitrateLabLab 99.8% pure · 103% of labelOnline checkout
Semax 10MG 1 × 10 mg $35.00 $3.50 Buy
Atomik Labz Affiliate
#85 by metascore · US. Florida, 33411
Metascore 77Finnrick 69%Bought vials 112% of label · 44 testsTitrateLab · Peptide CriticNo report for thisOnline checkoutCheck vendor
Semax 10mg 1 × 10 mg $35.00 $3.50 Buy
Planet Peptide
#21 by metascore · US: FL
Metascore 84Finnrick 65%Bought vials 112% of label · 63 testsTitrateLab · Peptide CriticNo report for thisOnline checkout
Bulk Semax 10MG x 10 Vials 10 × 10 mg = 100 mg $350.00
$35.00 per vial
$3.50 Buy
Peptide Crafters
#57 by metascore · US
Metascore 79Finnrick 60%PepIndex 22/100Bought vials 111% of label · 59 testsTitrateLab · Peptide CriticLab 99.5% pure · 128% of labelConfirmed with lab: 26 of 26Online checkout
Semax (10mg) 1 × 10 mg $35.00 $3.50 Buy
Hydro Research
#105 by metascore
Metascore 75 medium confidenceFinnrick 51%PepIndex 86/100Bought vials 123% of label · 4 testsTitrateLabLab report (image)Online checkout
Semax 10mg 1 × 10 mg $35.00 $3.50 Buy
Wellness Research Supply Affiliate
#255 by metascore · US
Metascore 71 low confidenceFinnrick 78%No public reportsOnline checkout
Semax 10mg
10% off through this site's link
1 × 10 mg $39.00 $35.10
10% off through this site's link
$3.51
list $3.90
Buy
Gulf Coast Aminos
#17 by metascore
Metascore 85 medium confidenceFinnrick 81%Bought vials 109% of label · 3 testsTitrateLabLab 99.8% pure · 105% of labelAccount needed
NA Semax 10mg 1 × 10 mg $35.95 $3.60 Buy
Glacier Aminos Affiliate
#73 by metascore
SEMAX 10MG (5-Pack) 5 × 10 mg = 50 mg $180.36
$36.07 per vial
$3.61 Buy
Royal Peptides Affiliate
#8 by metascore · US
Metascore 86Finnrick 75%Bought vials 107% of label · 34 testsTitrateLabNo report for thisConfirmed with lab: 3 of 3Online checkout
Semax 10mg KIT( 10 Vials)
10% off with code
10 × 10 mg = 100 mg $430.00 $387.00
10% off with code
$38.70 per vial
$3.87
list $4.30
Buy
Crush Research Affiliate
#91 by metascore · US
Metascore 76Finnrick 51%Bought vials 107% of label · 17 testsTitrateLabLab 99.8% pureOnline checkout
Semax 10mg — Single Vial 1 × 10 mg $39.00 $3.90 Buy
Ignite Labs
#178 by metascore
Metascore 73 medium confidenceFinnrick 80%Bought vials 104% of label · 3 testsTitrateLab · PeptideBaseNo public reportsOnline checkout
Semax 10mg 1 × 10 mg $39.99 $4.00 Buy
EZ Peptides
#12 by metascore
Metascore 85Finnrick 75%Bought vials 103% of label · 11 testsTitrateLab · PeptideBase · Peptide CriticNo report for thisConfirmed with lab: 21 of 21Account needed
Semax 10mg
Buy 2, get the 3rd free with code (same item)
1 × 10 mg $39.99
Buy 2, get the 3rd free with code (same item)
$4.00 Buy
Paradigm Peptide
#79 by metascore · US
Metascore 78Finnrick 85%Bought vials 106% of label · 17 testsTitrateLab · PeptideBase · Peptide CriticNo public reportsOnline checkout
Semax 10mg 1 × 10 mg $40.00 $4.00 Buy
Polaris Peptides
#20 by metascore · US?
Metascore 84Finnrick 63%Bought vials 110% of label · 99 testsTitrateLab · PeptideBase · PeptideCheckedLab 99.8% pure · 115% of labelOnline checkout
N-Acetyl Semax Amidate 10mg 1 × 10 mg $40.00 $4.00 Buy
Coffee and Peppers
#14 by metascore
Metascore 85Finnrick 70%Bought vials 102% of label · 30 testsTitrateLabNo report for thisConfirmed with lab: 6 of 6Online checkout
SEMAX Kit 10MG (10 Vials) 10 × 10 mg = 100 mg $404.99
$40.50 per vial
$4.05 Buy
Glacier Aminos Affiliate
#73 by metascore
SEMAX 10MG 1 × 10 mg $40.99 $4.10 Buy
Modern Aminos Affiliate
#125 by metascore · US
NA-Semax (N-Acetyl Semax) Semax 10MG
$30 off through this site's link (new customers)
1 × 10 mg $42.00
$30 off through this site's link (new customers)
$4.20 Buy
Peptidology
#5 by metascore · US, AZ 85254
Metascore 87Finnrick 71%Bought vials 97% of label · 18 testsTitrateLab · PeptideBase · Peptide Critic · PeptideCheckedNo report for thisConfirmed with lab: 34 of 34Online checkout
N-Acetyl Semax 10 mg (9.50mg | Batch 1673 | 99.47% Purity) 1 × 10 mg $42.00 $4.20 Buy
Wolverine Peptides
#58 by metascore · UK
Semax 5mg 1 × 5 mg $21.58
GBP 16.99
$4.32 Buy
Amplified Amino Affiliate
#27 by metascore · US: TX 78248
Metascore 83Finnrick 65%Bought vials 115% of label · 12 testsTitrateLabNo report for thisOnline checkout
N-Acetyl Semax Amidate 10mg 1 × 10 mg $44.00 $4.40 Buy
Go Alpha Labs Peptides
#51 by metascore · US
Metascore 80Finnrick 52%Bought vials 100% of label · 11 testsTitrateLabNo report for thisConfirmed with lab: 37 of 37Online checkout
Semax (10mg) 1 × 10 mg $44.99 $4.50 Buy
Lab Rat Peptide
#206 by metascore · US
Metascore 72 low confidenceFinnrick 76%TitrateLabNo public reportsOnline checkout
SEMAX 10mg 1 × 10 mg $45.00 $4.50 Buy
Oasis Peptides
#232 by metascore
Metascore 71Finnrick 56%Bought vials 105% of label · 20 testsTitrateLabNo public reportsOnline checkout
Semax 10mg 1 × 10 mg $45.00 $4.50 Buy
Go Alpha Labs Peptides
#51 by metascore · US
Metascore 80Finnrick 52%Bought vials 100% of label · 11 testsTitrateLabNo report for thisConfirmed with lab: 37 of 37Online checkout
Semax (5mg) (10 Vials) 10 × 5 mg = 50 mg $232.99
$23.30 per vial
$4.66 Buy
DMV Peptides
#123 by metascore
Semax 10mg 1 × 10 mg $49.00 $4.90 Buy
Nexa Labs Affiliate
#84 by metascore · China
Semax 10mg 1 × 10 mg $50.00 $5.00 Buy
Risynth Bio
#82 by metascore · US
Metascore 77Finnrick 69%Bought vials 100% of label · 18 testsTitrateLabNo report for thisOnline checkout
Semax 10mg 1 × 10 mg $50.00 $5.00 Buy
Pura Peptides
#81 by metascore
Metascore 77Finnrick 66%Bought vials 107% of label · 20 testsTitrateLab · Peptide CriticNo report for thisOnline checkout
Semax 10mg 1 × 10 mg $50.00 $5.00 Buy
Alpha-Gen
#34 by metascore
Metascore 82Finnrick 60%Bought vials 103% of label · 30 testsTitrateLabLab 98.5% pure · 110% of labelOnline checkout
Semax 10MG (Buy 3+) 3 × 10 mg = 30 mg $155.97
$51.99 per vial
$5.20 Buy
Certified Peptides
#66 by metascore · US, WA 98579
Metascore 79Finnrick 58%Bought vials 100% of label · 12 testsTitrateLabLab 99.2% pure · 101% of labelOnline checkout
SEMAX 10MG 1 × 10 mg $54.00 $5.40 Buy
Coffee and Peppers
#14 by metascore
Metascore 85Finnrick 70%Bought vials 102% of label · 30 testsTitrateLabNo report for thisConfirmed with lab: 6 of 6Online checkout
SEMAX (10mg per label) 1 × 10 mg $54.99 $5.50 Buy
Orbitrex Peptides
#1 by metascore · US
Metascore 90Finnrick 71%Bought vials 104% of label · 27 testsTitrateLab · PeptideBase · Peptide CriticLab 99.9% pure · 104% of labelOnline checkout
N-Acetyl Semax Amidate 10mg 1 × 10 mg $54.99 $5.50 Buy
Peptides For Less
#74 by metascore
Metascore 78 low confidenceFinnrick 75%No report for thisOnline checkout
Semax 1 × 10 mg $55.00 $5.50 Buy
Royal Peptides Affiliate
#8 by metascore · US
Metascore 86Finnrick 75%Bought vials 107% of label · 34 testsTitrateLabNo report for thisConfirmed with lab: 3 of 3Online checkout
Semax 10mg Single Vial
10% off with code
1 × 10 mg $65.00 $58.50
10% off with code
$5.85
list $6.50
Buy
Pure Peptide Labs
#53 by metascore · US
Semax 5mg 1 × 5 mg $29.95 $5.99 Buy
Pure Peptide Labs
#53 by metascore · US
NA Semax 10 mg 1 × 10 mg $59.95 $6.00 Buy
Risynth Bio
#82 by metascore · US
Metascore 77Finnrick 69%Bought vials 100% of label · 18 testsTitrateLabNo report for thisOnline checkout
Semax 5mg 1 × 5 mg $30.00 $6.00 Buy
Above All Peptides
#33 by metascore
Metascore 82Finnrick UnratedBought vials 100% of label · 27 testsTitrateLabLab 99.4% pure · 123% of labelConfirmed with lab: 2 of 2Online checkoutCheck vendor
Semax 10mg 1 × 10 mg $60.00 $6.00 Buy
Go Alpha Labs Peptides
#51 by metascore · US
Metascore 80Finnrick 52%Bought vials 100% of label · 11 testsTitrateLabNo report for thisConfirmed with lab: 37 of 37Online checkout
Semax (5mg) 1 × 5 mg $30.99 $6.20 Buy
Regenerative Research Affiliate
#56 by metascore
Semax (8mg) 1 × 8 mg $50.00 $6.25 Buy
PepClub USA
#37 by metascore
Metascore 81 medium confidenceFinnrick 81%Bought vials 87% of label · 4 testsTitrateLabNo report for thisOnline checkout
SEMAX SEMAX-11MG 1 × 11 mg $69.95 $6.36 Buy
Platinum Cryo
#211 by metascore · Akron, OH US
Metascore 72Finnrick 63%Bought vials 102% of label · 24 testsTitrateLabNo report for thisOnline checkoutCheck vendor
SEMAX 10MG 1 × 10 mg $64.95 $6.50 Buy
Peptide Group Buy PGB
#39 by metascore · US
Semax 10mg 1 × 10 mg $65.00 $6.50 Buy
Peptide Group Buy PGB
#39 by metascore · US
N-Acetyl Semax Amidate 10mg 1 × 10 mg $65.00 $6.50 Buy
Alpha-Gen
#34 by metascore
Metascore 82Finnrick 60%Bought vials 103% of label · 30 testsTitrateLabLab 98.5% pure · 110% of labelOnline checkout
Semax 10MG (Buy 2) 2 × 10 mg = 20 mg $139.34
$69.67 per vial
$6.97 Buy
Platinum Cryo
#211 by metascore · Akron, OH US
Metascore 72Finnrick 63%Bought vials 102% of label · 24 testsTitrateLabNo report for thisOnline checkoutCheck vendor
SEMAX 5MG 1 × 5 mg $34.95 $6.99 Buy
Amino Asylum
#245 by metascore
Metascore 71Finnrick 62%PepIndex 26/100Bought vials 100% of label · 15 testsTitrateLab · PeptideBaseNo report for thisOnline checkout
Semax Peptide 5mg 1 × 5 mg $34.99 $7.00 Buy
Dragon Pharma
#42 by metascore
Metascore 80 low confidenceFinnrick 46%TitrateLabNo report for thisOnline checkout
Semax (vial) [International] 1 × 5 mg $36.00 $7.20 Buy
The Naughty Needle
#38 by metascore · US
Metascore 81 low confidenceFinnrick 80%TitrateLabNo report for thisOnline checkout
Semax 10mg 1 × 10 mg $75.00 $7.50 Buy
The Naughty Needle
#38 by metascore · US
Metascore 81 low confidenceFinnrick 80%TitrateLabNo report for thisOnline checkout
Semax 5mg 1 × 5 mg $40.00 $8.00 Buy
Alpha-Gen
#34 by metascore
Metascore 82Finnrick 60%Bought vials 103% of label · 30 testsTitrateLabLab 98.5% pure · 110% of labelOnline checkout
Semax 10MG 1 × 10 mg $83.19 $8.32 Buy
Dragon Pharma
#42 by metascore
Metascore 80 low confidenceFinnrick 46%TitrateLabNo report for thisOnline checkout
Semax (vial) [U.S. Domestic] 1 × 5 mg $69.00 $13.80 Buy
Onyx Research Affiliate
#36 by metascore · US
Semax — Box of 10 10 vials, size not stated $340.00
$34.00 per vial
– Buy
Onyx Research Affiliate
#36 by metascore · US
Semax 1 vial, size not stated $38.25 – Buy
Modern Aminos Affiliate
#125 by metascore · US
NA-Semax (N-Acetyl Semax) NA-Semax
$30 off through this site's link (new customers)
1 vial, size not stated $42.00
$30 off through this site's link (new customers)
– Buy
Valor peptides Affiliate
#65 by metascore
Metascore 79 medium confidenceFinnrick 76%TitrateLab · PeptideBaseNo report for thisAccount needed
Semax 1 vial, size not stated $36.99 – Buy

Mixing a 10 mg vial

What each common amount of bacteriostatic water gives you on a U-100 insulin syringe. Pick a vial size above to change it.

WaterStrengthPer 10 units (0.1 mL)Per unit
1 mL10 mg/mL1,000 mcg100 mcg
2 mL5 mg/mL500 mcg50 mcg
3 mL3.333 mg/mL333.3 mcg33.33 mcg
5 mL2 mg/mL200 mcg20 mcg

Published lab results

93 certificates of analysis that vendors publish for Semax. Numbers are only filled in where the document is readable text; image-only COAs are linked without numbers. A vendor's own COA shows one tested sample, not every batch.

VendorLabDateLabelMeasuredPurityBatch
Polaris Peptides
Accumark Labs2026-09-29 10 mg 11.46 mg 115% 99.84% POL-NSMA10-3 View
Sunrise BioResearch
Freedom Diagnostics2026-09-24 10 mg 11.85 mg 119% 99.77% SMX10SEP25-01 View
Above All PeptidesCOA note
Freedom Diagnostics ✓ lab2026-09-19 10 mg 12.31 mg 123% 99.41% Re2026.08-AAP-00C View
Simple Peptide
Freedom Diagnostics2026-09-19 10 mg 12.21 mg 122% 99.43% SEMX-092026-1 (FD #2609171150, client 'Simple Peptide') View
Peptide Group Buy PGB
Janoshik2026-09-07 10 mg 11.76 mg 118% 99.46% PSNASMX10-1 (Round 1) View
NuLife PeptidesCOA note
Freedom Diagnostics2026-09-04 10 mg 11.05 mg 111% 99.69% NLSEM10502 (FD #2609020160, client 'Wholesale', 'Semax 10mg') View
Crush Research
ILS Laboratories2026-09-03 – – 99.82% CR-SMX-NS-0901 View
Peptide Partners
Chromate2026-09-02 – – 99.45% SX2622 (manufacturer VI32); Chromate image (purity from vendor's ledger text) View
Domestic PepsCOA note
Freedom Diagnostics ✓ lab2026-09-01 10 mg 11.08 mg 111% 99.14% Blue Cap View
NuLife PeptidesCOA note
Freedom Diagnostics2026-09-01 30 mg 32.3 mg 108% 99.63% NLSEM30501 (FD #2608280246, client 'Wholesale', 'Semax 30mg') View
Alpha Peptides
Kovera Labs ✓ lab2026-08-26 10 mg 10.47 mg 105% 99.57% SX-10261028 (KVR-2026-98BD55) View
Ion Peptide
Freedom Diagnostics ✓ lab2026-08-24 10 mg 13.25 mg 133% 99.72% SX10-08142026 View
My Pure Peptide
Janoshik2026-08-24 10 mg 11.1 mg 111% 99.423% 10242025S4 / Janoshik task #223083 View
NextGen Health
ILS Laboratories via PepIndex2026-08-24 30 mg 30.83 mg 103% 99.82% SMX30-02 View
Flycn Peptide
Janoshik2026-08-21 – – – FLY202607 (Janoshik task #212403; sample 'SX10(XA10) Semax 10mg') View (image)
Orbitrex Peptides
ILS Laboratories2026-08-20 10 mg 10.44 mg 104% 99.9% SEM10926 View
NextGen Health
ILS Laboratories via PepIndex2026-08-18 10 mg 10.35 mg 103% 99.93% SMX10-11 View
Peptide Crafters
Accumark Labs ✓ lab2026-08-12 10 mg 12.82 mg 128% 99.48% PC-G3-SMX (Semax (10mg)) View
Pure Peptide Labs
Freedom Diagnostics2026-08-11 10 mg 13.37 mg 134% 99.82% NX1315 View
Bulk Peptide SupplyCOA concerns
Most reports come from AV Analytics, a lab with no website or lookup to verify them, and they all read 99.73-99.81% purity across 19 different peptides and blends; its MDx reports are similarly uniform. Eight others are issued to 'Peptide COA Test LLC'. Checked 2026-10-08. How we check
Sonic Laboratories2026-08-07 10 mg 10.82 mg 108% 99.52% SX97654 View
SaiyanMed
Freedom Diagnostics ✓ lab2026-08-07 10 mg 11.63 mg 116% 99.73% SYM-SX10-2607 (COA lot: Black Cap) View
CertaPeptides
Janoshik2026-08-06 10 mg 10.93 mg 109% 99.477% View
Peptagon
Accumark Labs ✓ lab2026-08-06 30 mg 35.02 mg 117% 99.635% SEMX30-02062026-J View
Mai Peptide
Freedom Diagnostics ✓ lab2026-08-05 10 mg 10.64 mg 106% 99.56% Red (FD #2607310886, 'XA10 10mg', client 'Mai-peptides') View
Gulf Coast Aminos
Freedom Diagnostics2026-08-04 10 mg 10.45 mg 105% 99.78% NSX-10-0726 View

Doses studied in research Studied in people

What was given to people (or animals) in published studies and official labels, each linked to its source. This is not a recommendation: study products, purity and supervision differ from research-grade vials.

Who was studiedDose givenHow oftenFor how longWhat happened
adults in the acute period of hemispheric ischemic stroke (vs 80 conventionally treated controls)
n = 30
12 mg/day (moderate stroke) or 18 mg/day (severe stroke)
intranasal
daily5- and 10-day courses authors report faster regression of general cerebral and focal (especially motor) deficits vs controls; non-randomizedPubMed
adults after ischemic stroke in early or late rehabilitation, semax vs no-semax subgroups
n = 110
6000 mcg/day
not stated in abstract
daily, in 2 courses of 10 days with a 20-day interval2 x 10-day courses higher plasma BDNF and faster improvement in Barthel index and motor scores in semax subgroupsPubMed
patients with motor neuron disease (open-label)
n = 27
12 mg daily (1% solution)
intranasal
dailytwo 10-day courses with a 2-week break no change in denervation course or ALS clinical scores; improved quality-of-life score (emotional state, motivation)PubMed

Animal studies: Rat studies used single intranasal doses of 50-250 microg/kg body weight, or 0.15 mg/kg intraperitoneally.

Semax is registered as a medicine in Russia but is not FDA- or EMA-approved. Human studies are small, mostly non-randomized Russian trials; other studies (optic nerve disease, healthy-volunteer fMRI) do not state the dose in the abstract.

What the research says

C
Mostly animal studies
Why: Human data are small non-randomized, unblinded Russian studies; the controlled evidence comes from rat and mouse experiments.

Semax (an ACTH(4-10) analogue) has been tested in small Russian clinical studies (open-label or without described randomization) in stroke, optic nerve disease, motor neuron disease, psoriasis and atopic dermatitis; no large placebo-controlled RCTs are in the candidate literature. Most other evidence is rat gene-expression and behaviour work, so benefit in people is plausible but not firmly established.

Key papers ✓ 7~ 1? 3

  • ✓ Positive human trialZh Nevrol Psikhiatr Im S S Korsakova · 2018
    [The efficacy of semax in the tretament of patients at different stages of ischemic stroke].
    Humanssize not reported2 courses of 10 days with 20-day interval
    Comparative study of rehabilitation timing with and without semax

    Study of 110 post-ischemic-stroke patients split into semax and no-semax subgroups: adding semax raised plasma BDNF and was associated with faster improvement in Barthel index and motor scores.

    Study details
    Studied
    Patients after ischemic stroke in early (89±9 days) or late (214±22 days) rehabilitation, each split into semax+ and semax- subgroups
    Compared with
    Semax- subgroups (no semax)
    Main outcome
    Plasma BDNF, motor performance (MRC scale) and Barthel index
    Sample
    110 patients after ischemic stroke, written out in words in the abstract
    Authors' conclusion
    Semax, regardless of rehabilitation timing, increased plasma BDNF and accelerated Barthel index improvement; early rehabilitation and semax increased BDNF, sped functional recovery and improved motor performance.
    Limitations
    Not clearly randomized or blinded; correlational findings.
  • ✓ Positive human trialZh Nevrol Psikhiatr Im S S Korsakova · 1997
    [Effectiveness of semax in acute period of hemispheric ischemic stroke (a clinical and electrophysiological study)].
    Humans30 semax patients vs 80 controlsTreatment courses of 5 and 10 days
    Controlled clinical and electrophysiological study with conventional-therapy control group

    30 acute hemispheric stroke patients given semax vs 80 conventionally treated controls: authors report faster regression of general and motor deficits.

    Study details
    Studied
    Patients in the acute period of hemispheric ischemic stroke
    Compared with
    80 patients with analogous strokes on conventional therapy
    Main outcome
    Clinical rating scales, EEG mapping and somatosensory evoked potentials
    Authors' conclusion
    Adding Semax to combined intensive therapy had some influence on the rate of restoration of neurological functions, especially motor disorders. Most effective daily doses were 12 mg (moderate strokes) and 18 mg (severe).
    Limitations
    Not described as randomized or blinded.
  • ~ Mixed human trialZh Nevrol Psikhiatr Im S S Korsakova · 2007
    [The study of chronic partial denervation and quality of life in patients with motor neuron disease treated with semax].
    Humans27 peopleOpen-labelTwo 10-day courses with 2-week break; assessed through day 48
    Open-label clinical trial in sequential groups

    Open-label study in 27 motor neuron disease patients: semax did not change denervation course or clinical ALS scores, but improved quality-of-life scores (emotional state, motivation).

    Study details
    Studied
    Patients with definite, probable or possible motor neuron disease
    Compared with
    No separate control group
    Main outcome
    Chronic partial denervation (needle EMG), ALS scales and ALSAQ-40 quality of life
    Sample
    27 patients with motor neuron disease
    Authors' conclusion
    Semax did not influence the course of denervation or clinical estimates, but 1% semax significantly improved total quality-of-life estimate (emotional state, motivation), with maximal effect on day 10.
    Limitations
    Open-label, no control group.
  • ✓ Positive human trialVestn Oftalmol · 2000
    [Evaluation of therapeutic effect of new Russian drug semax in optic nerve disease].
    Humanssize not reported
    Three-group comparison of administration routes plus control

    Controlled study in optic nerve disease: semax added to standard therapy was reported to improve visual acuity, visual field and optic nerve conductivity vs control.

    Study details
    Studied
    Patients with vascular, toxic allergic, inflammatory optic nerve disease or partial optic atrophy
    Compared with
    Control group on basic therapy without semax
    Main outcome
    Visual acuity, visual field, optic nerve electric sensitivity and conductivity, color vision
    Authors' conclusion
    Adding semax to the therapeutic complex had a favorable impact on intensity and rate of recovery and improved visual functions.
    Limitations
    Abstract gives no numbers or sample size.
  • ? Inconclusive human trialDokl Biol Sci · 2020
    Functional Connectomic Approach to Studying Selank and Semax Effects.
    Humans52 peoplePlacebo-controlledImaging up to 20 min after injection
    Resting-state fMRI before and after 5 and 20 min of injection

    52 healthy volunteers given semax, selank or placebo: changes in resting-state amygdala-temporal cortex functional connectivity on fMRI; no clinical outcomes measured.

    Study details
    Studied
    Healthy participants
    Compared with
    Placebo
    Main outcome
    Whole-brain resting-state functional connectivity of amygdala and DLPFC
    Sample
    52 healthy participants
    Authors' conclusion
    Group and condition differences were found in connectivity between the right amygdala and right temporal cortex regions, giving general and specific effects of Selank and Semax.
    Limitations
    Healthy volunteers; connectivity imaging only, no clinical outcomes.
  • ✓ Positive animalJ Neurochem · 2006
    Semax, an analogue of adrenocorticotropin (4-10), binds specifically and increases levels of brain-derived neurotrophic factor protein in rat basal forebrain.
    Animalssize not reportedBDNF measured 3 h after dosing
    Radioligand binding and BDNF immunoenzymatic analysis

    In rats, intranasal semax bound specific basal-forebrain sites and rapidly increased BDNF protein in the basal forebrain (not cerebellum).

    Key resultSpecific binding of labelled Semax with KD 2.4±1.0 nm and BMAX 33.5±7.9 fmol/mg protein; intranasal Semax at 50 and 250 microg/kg raised BDNF after 3 h in basal forebrain but not cerebellum

    Study details
    Studied
    Rat basal forebrain membranes and rats given intranasal Semax
    Compared with
    Cerebellum as comparison region
    Main outcome
    Semax binding and BDNF protein levels
    Authors' conclusion
    Specific Semax binding sites exist in rat basal forebrain, and cognitive effects of Semax might be associated at least in part with increased BDNF protein there.
    Limitations
    Rat study.
  • ✓ Positive animalActa Naturae · 2025
    The Potential of the Peptide Drug Semax and Its Derivative for Correcting Pathological Impairments in the Animal Model of Alzheimer's Disease.
    Animalssize not reported
    Behavioural tests and histology

    In APP/PS1 Alzheimer's model mice, semax and a derivative improved cognitive test performance and reduced amyloid inclusions in cortex and hippocampus.

    Study details
    Studied
    Transgenic APPswe/PS1dE9/Blg mice (Alzheimer's model)
    Main outcome
    Cognition (open field, novel object recognition, Barnes maze) and amyloid inclusions
    Authors' conclusion
    Semax and its derivative improved cognitive functions in mice and reduced amyloid inclusions in cortex and hippocampus, indicating potential for Alzheimer's strategies.
    Limitations
    Mouse model only.
  • ✓ Positive animalBr J Pharmacol · 2025
    Semax peptide targets the μ opioid receptor gene Oprm1 to promote deubiquitination and functional recovery after spinal cord injury in female mice.
    Humans + animals
    Mouse SCI model with RNA-seq, network pharmacology, docking and USP18 knockdown

    In female mice with spinal cord injury, semax improved functional recovery scores and reduced lysosomal-membrane-permeabilization-related pyroptosis.

    Study details
    Studied
    Female C57BL/6 mice with T9-T10 spinal cord injury and PC12 cell neuroinflammation model
    Main outcome
    Functional recovery (footprint, Basso scores, inclined plane), lysosomal membrane permeabilization-related pyroptosis
    Authors' conclusion
    Semax improved SCI functional recovery and inhibited LMP-related pyroptosis, apparently via mu-opioid receptor, USP18 and FTO deubiquitination, suggesting potential for SCI treatment.
    Limitations
    Female mice and cell models only.
  • ✓ Positive human trialRussian-languageЧеловек и его здоровье · 2008
    Клиническая эффективность комплексной терапии атопического дерматита с применением семакса
    Humanssize not reportedRandomized
    Controlled comparison of Semax plus standard therapy vs standard therapy alone; randomization not stated

    In patients with atopic dermatitis, adding Semax to standard therapy gave a lower Dermatology Life Quality Index (by 55.31%) and SCORAD than standard therapy alone (Russian regional journal; allocation method and sample size not given in the abstract).

    Key resultAfter the course DLQI was 55.31% lower than in controls (p value cut off in the available abstract)

    Study details
    Studied
    Patients with atopic dermatitis
    Compared with
    Standard therapy only
    Main outcome
    Dermatology Life Quality Index (DLQI) and SCORAD
    Sample
    Patient numbers not stated in the abstract
    Authors' conclusion
    Authors report high efficacy of Semax added to complex treatment of atopic dermatitis.
    Limitations
    Abstract gives no sample size or randomization/blinding; abstract truncated.
  • ? Inconclusive human trialRussian-languageАктуальные проблемы медицины · 2012
    Оценка влияния препарата семакс на эффективность антиоксидантной терапии у больных псориазом
    Humans95 peopleNo control group
    Clinical observation of Semax added to antioxidant therapy; control group not described in the abstract

    95 patients with psoriasis were observed; the authors report that adding Semax to antioxidant therapy improved the course of psoriasis, reduced inflammatory activity and normalised serum lipids, but no control group or numbers are given in the abstract (Russian regional journal).

    Study details
    Studied
    Patients with psoriasis
    Main outcome
    Quality of life, disease course, inflammatory activity, serum lipids
    Sample
    95 patients with psoriasis
    Authors' conclusion
    Authors conclude Semax markedly improves the course of psoriasis and lowers inflammatory activity, citing lipotropic, membrane-stabilising and antioxidant action.
    Limitations
    No numbers, control group or blinding in the abstract; mechanism claims are inferred.
  • ? Inconclusive reviewZh Nevrol Psikhiatr Im S S Korsakova · 2024
    [Place of oligopeptide H-Met-Glu-His-Phe-Pro-Gly-Pro-OH in the therapy and rehabilitation of patients with ischemic stroke].
    No new data
    Narrative review of clinical studies

    A Russian narrative review of clinical studies concludes the Semax heptapeptide (MGHPPGP, intranasal) is clinically effective in acute and recovery-phase ischemic stroke; it is not a systematic review and the underlying studies are the same small Russian trials.

    Study details
    Studied
    Patients with ischemic stroke (reviewed studies)
    Main outcome
    Clinical efficacy in acute and recovery stroke
    Sample
    Narrative review; number of studies not stated in abstract
    Authors' conclusion
    The review concludes MGHPPGP is clinically effective in ischemic stroke in both acute and recovery periods and across stroke subtypes.
    Limitations
    Narrative, non-systematic; no pooled data; relies on previously published small studies.

Reported side effects

No adverse effects are described in the human study abstracts; published human safety data are limited to small trials.

✓ positive · ✗ negative · ~ mixed · ? inconclusive, judged on each paper's own main outcome. Grades: A strong human evidence → D little or none. Papers and verdicts are drawn from PubMed, Europe PMC and Russian journals (CyberLeninka); not medical advice.

Discussions elsewhere

Experiences and questions about Semax on other sites. Treat anecdotes with care.

Also sold in blends with Semax

Selank + Semax (72) · Oxytocin + Selank + Semax (2) · Dihexa + Selank + Semax (2). The order planner uses these automatically when a blend is cheaper than separate vials.

Also tested for Semax, no online prices

These vendors passed Finnrick testing for Semax but sell by message or quote. Finnrick's reported price is shown where it has one.

VendorFinnrickFinnrick $/mgContact
Heman Peptide HM 59%
Semax: 67% (n=3)
$0.800WhatsApp +85251654023WhatsApp +447594241881WhatsApp +85263584435WhatsApp +85256038289hemanpeptide.com

Semax: questions people ask

What is Semax?

ACTH(4-10) analog. A seven-amino-acid peptide based on a fragment of ACTH, given as nasal drops. Raises BDNF and is studied for stroke recovery, attention and memory.

How much does Semax cost?

The cheapest Semax from an independently tested vendor is $0.600 per mg (Cartman Gear, LOBSTER SEMAX 10MG KIT [Lobster Intl], $60.00). Across 161 listings from 85 vendors the median is $2.67 per mg.

Where can I buy Semax?

85 vendors tested by Finnrick sell Semax. The cheapest per mg right now: Cartman Gear ($0.600), Uther ($0.600), Andy Peps Studio ($0.700). 28 of them publish a lab report (COA) for Semax; compare lab scores and reports in the table above before buying.

How much bacteriostatic water for 10 mg of Semax?

Adding 2 mL of bacteriostatic water to a 10 mg vial of Semax gives 5 mg/mL: each 10 units on a U-100 insulin syringe holds 500 mcg. With 1 mL it's 10 mg/mL (1,000 mcg per 10 units); with 3 mL, 3.333 mg/mL (333.3 mcg per 10 units). More water makes small amounts easier to measure. Mixing charts: 5 mg, 10 mg, 11 mg, 30 mg.

Is Semax FDA approved?

Approved in Russia for stroke and cognitive disorders; not approved in the US.

Can Semax be compounded in the US?

FDA's Pharmacy Compounding Advisory Committee voted on July 23-24, 2026 to recommend adding it to the 503A bulks list (FDA staff had recommended against). The vote isn't binding: compounding stays illegal until FDA accepts it and finishes proposed and final rulemaking, which typically takes a year or more. Vote: 8-5 (evaluated for cerebral ischemia, migraine, trigeminal neuralgia). Compounding status for every peptide.

Does Semax work? What does the research say?

Evidence grade C (mostly animal studies), from 11 papers: Human data are small non-randomized, unblinded Russian studies; the controlled evidence comes from rat and mouse experiments. Semax (an ACTH(4-10) analogue) has been tested in small Russian clinical studies (open-label or without described randomization) in stroke, optic nerve disease, motor neuron disease, psoriasis and atopic dermatitis; no large placebo-controlled RCTs are in the candidate literature. Most other evidence is rat gene-expression and behaviour work, so benefit in people is plausible but not firmly established. See the papers.

What dose of Semax was used in studies?

Semax is studied in people. adults in the acute period of hemispheric ischemic stroke (vs 80 conventionally treated controls): 12 mg/day (moderate stroke) or 18 mg/day (severe stroke) daily; adults after ischemic stroke in early or late rehabilitation, semax vs no-semax subgroups: 6000 mcg/day daily, in 2 courses of 10 days with a 20-day interval; patients with motor neuron disease (open-label): 12 mg daily (1% solution) daily. These are amounts used in published studies or official labels, not a recommendation.

Where do people discuss Semax? Is there a Semax Reddit?

Communities focused on it include r/CognitivePeptides, r/Semax, r/Selank. Experiences shared there aren't evidence, and some allow vendor promotion. All communities.

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