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Where to Buy Semax in 2026: 38 Lab-Tested Sellers, From $1.19/mg With a Coupon Code

Where to buy Semax: PepAssess lists Semax at 59 vendors. As of November 12, 2026, the lowest price with a coupon code is $1.19/mg at Everest Peptides (code pepassess); the median across all sellers is $3.91/mg. Vendors are ranked by Evidence Score.

Prices and codes updated November 12, 2026 · re-checked every night

Semax is a seven-amino-acid peptide (Met-Glu-His-Phe-Pro-Gly-Pro): a fragment of the stress hormone ACTH with a Pro-Gly-Pro tail added, designed to keep ACTH's brain effects without its hormonal ones.

Learn more about Semax from the published research: Korsakov Journal of Neurology and Psychiatry (1997) · Korsakov Journal of Neurology and Psychiatry (2005)

The compounds listed on this page are for research purposes only, not for human consumption.

Semax reconstitution calculator →

Semax coupon codes

Lowest Semax price with a code
$1.19/mg $1.4940 mg vial $47.59 with the code
Shop
code tested at checkout November 12, 2026
Biggest Semax discount
$2.50/mg $5.0010 mg vial $25 with the code
Shop
code tested at checkout November 12, 2026

Prices with the code taken off · updated November 12, 2026 · re-checked every night

Every Semax coupon code

64 Semax sellers with a confirmed code — PepAssess's preferred vendor first, then highest Evidence Score.

Platinum LionPreferred93score30 mg vial $52.49 with code$2.33/mg$1.75/mg with code25% offShop
Rebirth LabsPreferred84score10 mg vial $35.99 with code$4.00/mg$3.60/mg with code10% offShop
BioLongevity Labs100score20 mg vial $55.22 with code$3.25/mg$2.76/mg with code15% offShop
Hydro Research Peptides100score10 mg vial $28 with code$3.50/mg$2.80/mg with code12% below typical20% offShop
Lost Coast Aminos100score10 mg vial $21.60 with code$2.40/mg$2.16/mg with code40% below typical10% offShop
Myoasis Labs99score10 mg vial $36 with code$4.50/mg$3.60/mg with code20% offShop
Glow Peptides99score10 mg vial $44.99 with code$5.00/mg$4.50/mg with code10% offShop
Bench Grade Peptides95score10 mg vial $97.20 with code$10.80/mg$9.72/mg with code10% offShop
Next Level Compounds95score30 mg vial $69.99 with code$3.33/mg$2.33/mg with code30% offShop
GigaCompounds95score10 mg vial $36 with code$4/mg$3.60/mg with code10% offShop
Retaone Labs93score10 mg vial $24.70 with code$2.60/mg$2.47/mg with code35% below typical5% offShop
Pinnacle Peptide Labs92score10 mg vial $42.49 with code$5.00/mg$4.25/mg with code15% offShop
True Peptide Labs92score10 mg vial $20.80 with code$3.20/mg$2.08/mg with code20% below typical35% offShop
PeakForce Labs92score5 mg vial $20.80 with code$4.16/mg$4.16/mg with code35% offShop
Ascension Peptides90score10 mg vial $25 with code$5/mg$2.50/mg with code50% offShop
Arctic Lab Supply90score10 mg vial $24.74 with code$3.30/mg$2.47/mg with code18% below typical25% offShop
Amino Research89score10 mg vial $31.99 with code$4.00/mg$3.20/mg with code20% offShop
Peptide Giants89score10 mg vial $36.10 with code$3.80/mg$3.61/mg with code5% below typical5% offShop
Rivn Research88score10 mg vial $38.24 with code$4.50/mg$3.82/mg with code15% offShop
NOVA Labs88score10% offShop
Silverstone Labs Co88score10 mg vial $28.90 with code$3.40/mg$2.89/mg with code15% below typical15% offShop
Blue Ridge Peptides88score10 mg vial $36 with code$4/mg$3.60/mg with code10% offShop
Alpha Peptides87score10 mg vial $19.69 with code$2.19/mg$1.97/mg with code45% below typical10% offShop
My Amino Lab86score10 mg vial $27.90 with code$3.10/mg$2.79/mg with code22% below typical10% offShop
Pivot Labs Global86score10 mg vial $55.21 with code$6.50/mg$5.52/mg with code15% offShop
Everest Peptides85score40 mg vial $47.59 with code$1.49/mg$1.19/mg with code20% offShop
Rejuven8 Peptides85score15% offShop
NuLab Peptides84score10 mg vial $39.60 with code$4.95/mg$3.96/mg with code20% offShop
Disguised Alpha83score10% offShop
One Aminos83score33% offShop
Echo Peptides83score10 mg vial $50.99 with code$6.00/mg$5.10/mg with code15% offShop
VISTARA LABS83score25% offShop
LUV Aminos83score10 mg vial $21.60 with code$2.40/mg$2.16/mg with code10% offShop
PX1 Research82score10% offShop
Modern Research Peptides82score40% offShop
Global Aminos82score10 mg vial $31.99 with code$4.00/mg$3.20/mg with code20% offShop
VAYN81score5 mg vial $38.40 with code$9.60/mg$7.68/mg with code20% offShop
BioInfinity81score10 mg vial $54 with code$6/mg$5.40/mg with code10% offShop
Vortex Research81score10 mg vial $20.99 with code$3.00/mg$2.10/mg with code25% below typical30% offShop
Stack Research80score30 mg vial $63.92 with code$2.66/mg$2.13/mg with code20% offShop
Palmetto Peptides79score15 mg vial $63 with code$4.67/mg$4.20/mg with code10% offShop
CertaPeptides79score10% offShop
MsAmino78score10 mg vial $19.20 with code$4.80/mg$3.84/mg with code20% offShop
Prime Peptide Solutions78score10 mg vial $35.99 with code$4.00/mg$3.60/mg with code10% offShop
Ps Peptides77score11 mg vial $37.53 with code$3.91/mg$3.52/mg with code10% offShop
Ouralus77score5 mg vial $17.40 with code$3.48/mg$3.48/mg with code10% offShop
Great Northern Peptides76score10% offShop
V8 Peptides76score10% offShop
RemedyX75score10 mg vial $35.10 with code$3.90/mg$3.51/mg with code10% offShop
Platinum Biolabs73score10 mg vial $45.75 with code$6.10/mg$4.57/mg with code25% offShop
Blackline Scientific72score11 mg vial $32 with code$3.64/mg$2.91/mg with code20% offShop
GenX Peptides68score30 mg vial $42.50 with code$1.67/mg$1.42/mg with code15% offShop
Ascend Research66score10 mg vial $62.96 with code$7.00/mg$6.30/mg with code10% offShop
Value Research Labs64score10 mg vial $23.99 with code$3.00/mg$2.40/mg with code25% below typical20% offShop
Voltera Sciences64score10 mg vial $67.99 with code$8.00/mg$6.80/mg with code15% offShop
VMAX Peptides63score10 mg vial $22.41 with code$2.49/mg$2.24/mg with code38% below typical10% offShop
Peptuvia63score30 mg vial $216 with code$8/mg$7.20/mg with code10% offShop
Vitality Chems59score10 mg vial $66.74 with code$7.50/mg$6.67/mg with code11% offShop
99PurityPeptides43score10% offShop
TCORE BIOTECH33score10 mg vial $22.39 with code$2.80/mg$2.24/mg with code30% below typical20% offShop
Sparta Labs31score15% offShop
Project Amino21score10% offShop
Helix Bio Chem16score30 mg vial $71.99 with code$2.67/mg$2.40/mg with code10% offShop
XLR815score10 mg vial $63.99 with code$8.00/mg$6.40/mg with code20% offShop

Lowest prices for every peptide →

Where to buy Semax: the short answer

What is the lowest Semax price with a coupon code?

As of November 12, 2026, the lowest Semax price PepAssess found with a coupon code is at Everest Peptides: $1.19 per mg with code pepassess (20% off; $1.49 per mg before the code). Prices are re-checked every night. Everest Peptides coupon code

What is the best Semax coupon code?

As of November 12, 2026, the biggest Semax coupon code PepAssess has confirmed is PEPASSESS50OFF for 50% off at Ascension Peptides, which brings it to $2.50 per mg. PepAssess lists each code with its discount and the seller's Evidence Score, based on lab reports confirmed with the testing labs. Ascension Peptides coupon code

Where can I buy lab-tested Semax?

As of November 12, 2026, PepAssess lists 59 online vendors selling Semax. 38 of them publish a Semax lab report that the testing lab confirmed on its own records, and 18 of those cover both purity (HPLC and mass spec) and toxicity (endotoxin or sterility). The highest-scoring vendors with a lab-confirmed Semax report are BioLongevity Labs (100/100), Hydro Research Peptides (100/100) and Lost Coast Aminos (100/100). Compare all 59 Semax vendors on PepAssess

What is the best Semax vendor?

PepAssess ranks Semax vendors by Evidence Score (0–100): what each vendor documents — lab reports confirmed by the labs, how often it tests, business transparency and buyer protection. As of November 12, 2026, the top-scoring Semax vendors are BioLongevity Labs (100/100), Hydro Research Peptides (100/100) and Lost Coast Aminos (100/100) — all three with a lab-confirmed Semax report.

What is the cheapest Semax per mg?

The lowest Semax price PepAssess found is $1.49/mg at Everest Peptides; the median across vendors is $3.91/mg (as of November 12, 2026). Among vendors with a lab-confirmed Semax report, the lowest is $1.49/mg at Everest Peptides. Prices come from each vendor's own store and exclude shipping and discounts.

Semax cost per week

What one 40 mg vial of Semax costs per week of research, at the lowest one-vial price with a coupon code: $47.59 at Everest Peptides (code pepassess, $1.19/mg), as of November 12, 2026.

One vial used overCost per week
2 weeks$23.80
4 weeks$11.90
8 weeks$5.95

Lab-confirmed Semax reports

41 of 59 sellers publish a Semax lab report. 38 have one the testing lab confirmed on its own records; 18 of those cover both purity (HPLC + mass-spec identity) and toxicity (endotoxin or sterility). Those covering both are listed first, then by Evidence Score.

BioLongevity LabsPurity ✓↗Toxicity ✓↗May 2026$3.25/mg15% off100scoreShop
Lost Coast AminosPurity ✓↗Toxicity ✓↗Sep 2026$2.40/mg10% off100scoreShop
Glow PeptidesPurity ✓↗Toxicity ✓↗Apr 2026$5.00/mg10% off99scoreShop
Next Level CompoundsPurity ✓↗Toxicity ✓↗Oct 2026$3.33/mg30% off95scoreShop
Retaone LabsPurity ✓↗Toxicity ✓↗Jul 2026$2.60/mg5% off93scoreShop
Pinnacle Peptide LabsPurity ✓↗Toxicity ✓↗Jun 2026$5.00/mg15% off92scoreShop
PeakForce LabsPurity ✓↗Toxicity ✓↗Aug 2026$4.16/mg35% off92scoreShop
NOVA LabsPurity ✓↗Toxicity ✓↗Aug 202610% off88scoreShop
Rebirth LabsPurity ✓↗Toxicity ✓↗Sep 2026$4.00/mg10% off84scoreShop
One AminosPurity ✓↗Toxicity ✓↗Sep 202633% off83scoreShop
PX1 ResearchPurity ✓↗Toxicity ✓↗Oct 202610% off82scoreShop
Modern Research PeptidesPurity ✓↗Toxicity ✓↗May 202640% off82scoreShop
BioInfinityPurity ✓↗Toxicity ✓↗Feb 2026$6/mg10% off81scoreShop
Vortex ResearchPurity ✓↗Toxicity ✓↗Aug 2026$3.00/mg30% off81scoreShop
Palmetto PeptidesPurity ✓↗Toxicity ✓↗Aug 2026$4.67/mg10% off79scoreShop
MsAminoPurity ✓↗Toxicity ✓↗Aug 2026$4.80/mg20% off78scoreShop
Ps PeptidesPurity ✓↗Toxicity ✓↗$3.91/mg10% off77scoreShop
Value Research LabsPurity ✓↗Toxicity ✓↗Jun 2026$3.00/mg20% off64scoreShop
Hydro Research PeptidesPurity –Toxicity ✓↗Mar 2026$3.50/mg20% off100scoreShop
Myoasis LabsPurity ✓↗Toxicity –Jun 2026$4.50/mg20% off99scoreShop
Bench Grade PeptidesPurity ✓↗Toxicity –Aug 2026$10.80/mg10% off95scoreShop
GigaCompoundsPurity –Toxicity ✓↗Sep 2026$4/mg10% off95scoreShop
Ascension PeptidesPurity ✓↗Toxicity –Jun 2026$5/mg50% off90scoreShop
Arctic Lab SupplyPurity ✓↗Toxicity –Nov 2026$3.30/mg25% off90scoreShop
Amino ResearchPurity ✓↗Toxicity –May 2026$4.00/mg20% off89scoreShop
Peptide GiantsPurity –Toxicity –$3.80/mg5% off89scoreShop
My Amino LabPurity ✓↗Toxicity –Sep 2026$3.10/mg10% off86scoreShop
Everest PeptidesPurity ✓↗Toxicity –Aug 2026$1.49/mg20% off85scoreShop
Rejuven8 PeptidesPurity ✓↗Toxicity –Feb 202615% off85scoreShop
NuLab PeptidesPurity ✓↗Toxicity –Aug 2026$4.95/mg20% off84scoreShop

All 38 lab-confirmed Semax sellers →

from $64.97$3.25/mg100scoreShop
from $35$3.50/mg100scoreShop
from $49.99$5.00/mg92scoreShop
from $50$5/mg90scoreShop
82scoreShop
from $26$2.60/mg93scoreShop
from $44.99$4.50/mg88scoreShop
from $108$10.80/mg95scoreShop
from $39.99$4.00/mg89scoreShop
from $45$4.50/mg99scoreShop
from $39.99$4.00/mg84scoreShop
from $47.99$4.80/mg78scoreShop
from $48$9.60/mg81scoreShop
from $27.99$1.49/mg85scoreShop
from $24$2.40/mg100scoreShop
85scoreShop
83scoreShop
82scoreShop
88scoreShop
from $34$3.40/mg88scoreShop
from $99.99$3.33/mg95scoreShop
83scoreShop
from $79.90$2.66/mg80scoreShop
from $31$3.10/mg86scoreShop
from $60$6/mg81scoreShop
from $39.99$4.00/mg78scoreShop
from $39$3.90/mg75scoreShop
from $21.88$2.19/mg87scoreShop
from $27$3.80/mg89scoreShop
from $32.99$3.30/mg90scoreShop
from $29.99$3.00/mg64scoreShop
from $40$4/mg88scoreShop
from $39.99$6.00/mg83scoreShop
from $39.99$4.00/mg82scoreShop
from $49.50$4.95/mg84scoreShop
from $70$4.67/mg79scoreShop
76scoreShop
79scoreShop
from $42.99$3.91/mg77scoreShop
83scoreShop
from $79.99$8.00/mg64scoreShop
from $40$3.64/mg72scoreShop
43scoreShop
from $27.99$2.80/mg33scoreShop
31scoreShop
from $49.99$2.67/mg16scoreShop
21scoreShop
from $79.99$8.00/mg15scoreShop
from $40$4/mg95scoreShop
from $50$1.67/mg68scoreShop

All 59 Semax sellers, ranked by Evidence Score →

Prices come from each vendor's own public store data and may exclude shipping, discounts or bulk pricing. Research-use products; not medical advice.

About Semax

What it is

Semax is a seven-amino-acid peptide (Met-Glu-His-Phe-Pro-Gly-Pro): a fragment of the stress hormone ACTH with a Pro-Gly-Pro tail added, designed to keep ACTH's brain effects without its hormonal ones. Outside Russia it is sold online as a research chemical.

How it works

  • In rats, intranasal Semax increased brain-derived neurotrophic factor (BDNF) in the basal forebrain, and specific binding sites for it were found in that region.

The compounds listed on this page are for research purposes only, not for human consumption. Not medical advice.

Related: Selank · DSIP · Pinealon · Epitalon · SS-31

Semax: more questions people ask

Which Semax vendors have lab reports confirmed by the testing lab?

38 as of November 12, 2026. Those whose confirmed reports cover both purity and toxicity: BioLongevity Labs, Lost Coast Aminos, Glow Peptides, Next Level Compounds, Retaone Labs, Pinnacle Peptide Labs, PeakForce Labs and NOVA Labs and 10 more. PepAssess matches each report to the issuing lab's own public record, not the vendor's copy.

How can I tell if a Semax certificate of analysis (COA) is real?

Look the report up in the testing lab's own records — most labs that test peptides publish a lookup by report ID, QR code or lot number. PepAssess does this for every Semax report it finds: as of November 12, 2026, 38 of the 41 sellers publishing a Semax report had one the lab confirmed.

How much does a vial of Semax cost?

As of November 12, 2026, a 10 mg vial of Semax costs a median $44.99 across the 202 sellers PepAssess found with one in stock (lowest $10); a 5 mg vial, a median $34.99 across 67 sellers (lowest $9.45); a 30 mg vial, a median $69.99 across 39 sellers (lowest $32). Each seller's lowest in-stock price for that size counts once; prices come from each seller's own store and exclude shipping and discounts.

Can you buy Semax as a nasal spray, a pen or capsules?

Yes. As of November 12, 2026, 487 of the 59 Semax sellers PepAssess lists sell a vial; 44 a nasal spray, 26 a pen or pre-filled form and 1 capsules or another oral form. Counts come from each store's own product names. A lab report covers the product and batch it names — check that it's for the form you're buying.

How do I know if a Semax seller is legit?

Check what the seller can show. As of November 12, 2026, PepAssess checks every Semax seller for three things: a Semax lab report that the testing lab confirms on its own records (38 of 59), card payments, which let you dispute a charge (50 of 59), and a published street address — not a mailbox or registered agent (22 of 59). Each seller's PepAssess profile shows which of these it has.

Are there Semax coupon codes?

Yes. PepAssess lists coupon codes for 59 vendors selling Semax: BioLongevity Labs: PEPASSESS (15% off), Hydro Research Peptides: PepAssess20 (20% off), Lost Coast Aminos: PEPASSESS (10% off), Myoasis Labs: pepassess (20% off), Glow Peptides: PEPASSESS (10% off), Bench Grade Peptides: PEPASSESS (10% off) and 53 more.

CertaPeptides products are for research use only and not for human consumption.