Semax_
A peptide used for sharper focus, memory, and mental clarity.
Every offer, cheapest per milligram first
Vials come in different sizes, so price per mg is the only column that compares like with like.
- Peptide ProsSemax 30mg$58.25$73.99
- Biotech PeptidesSemax$53.00
- Biotech PeptidesSemax (N-Acetyl)$57.00
- Paramount PeptidesSemax$68.00
- Skye PeptidesSemax$69.00
- Recon PeptidesSemax 30mg$70.00
- Value Research LabsSemax$23.99$29.99
- Swiss ChemsSemax 30mg$73.95$114.95
- Swiss ChemsSemax$73.95
- Core PeptidesSemax$63.00
- BioLongevity LabsSemax (N-Acetyl Amidate)$64.97
- Pure Health PeptidesSemax$33.00
- Pure Health PeptidesSemax$23.00
- Pure Health PeptidesSemax Liquid$114.00Starting price, larger sizes cost more
- NuScience PeptidesSemax NA 10mg$34.99$39.99Sale price, list price not shown
- Go Alpha Labs PeptidesSemax (10mg)$35.99$44.99
- Go Alpha Labs PeptidesSemax (5mg)$24.79$30.99
- Go Alpha Labs PeptidesSemax Spray$63.99Size not stated by the vendor · Sale price, list price not shown
- True PeptideSemax$40.00
- Ameano PeptidesSemax (N-Acetyl Amidate)$44.00
- Nextech LabsSemax - 10mg$45.00
- Nextech LabsSemax 10mg Air Dispersal Kit$50.00
- PeakForm PeptidesSemax$45.00
- Peptide VaultSemax 10MG Vial$45.00
- Iron Peak PeptidesSemax$50.00
- Proxiva LabsSemax$50.00
- Apex Peptide SupplySEMAX$54.99
- Apex Peptide SupplySEMAX$34.99
- Simple PeptideSemax$55.00
- Prime SciencesSEMAX$58.50$90.00
- Sigma CompoundsSemax (10 MG)$59.00
- Sigma CompoundsSemax (10 MG)$69.00
- Ascension PeptidesSemax$59.99
- BioInfinity LabSemax$60.00
- Protide HealthSemax$60.00
- Protide HealthSemax (N-Acetyl Amidate)$75.00
- Orion PeptidesSemax$61.00
- Orion PeptidesSemax$47.00
- AminoVaultSemax$62.90$74.00
- American PeptidesSEMAX$65.00
- American PeptidesSEMAX LIQUID SPRAY$85.00
- Nationwide PeptidesSemax Peptide$77.00
- Nationwide PeptidesSemax Peptide$45.00
- $79.99
- Stemcode PeptidesSemax Vial 10mg$110.00
- Stemcode PeptidesSemax Nasal Spray$130.00
- Prime Lab PeptidesSemax – 5mg$70.00$90.00
- Eternal PeptidesSemax$149.99Starting price, larger sizes cost more
- Eternal PeptidesSemax$39.99$40.00starting atStarting price, larger sizes cost more
- $28.00starting at
- Peak Lab PeptidesSemax$37.00$216.00Size not stated by the vendor
- Amino ClubSEMAX SPRAY Neuroprotective Peptide Spray$38.99$59.99Size not stated by the vendor
- BioEdge Research LabsSemax (N-Acetyl Amidate)$39.00starting atSize not stated by the vendor · Starting price, larger sizes cost more
- Modern AminosSemax (N-Acetyl)$42.00starting at
- Cernum BiosciencesSemax$43.99Size not stated by the vendor
- Instant PeptidesSemax$50.00Size not stated by the vendor
- Prime PeptidesSemax$50.00starting atStarting price, larger sizes cost more
- Xcel PeptidesSemax$59.00$91.00
- Peptide PartnersSemax$60.00starting atStarting price, larger sizes cost more
- Licensed PeptidesSemax$76.99starting atStarting price, larger sizes cost more
- Limitless Life NootropicsSemax Nasal Spray 10ml (30mg) 99% Purity, USA Made$76.99
- Limitless Life NootropicsSemaxmembers onlySize not stated by the vendor
- Limitless Life NootropicsSemax Spraymembers onlySize not stated by the vendor
- Verified PeptidesSemax (N-Acetyl)$89.00Size not stated by the vendor
- LIVV NaturalSemaxnot published
- Alpha PeptidesSEMAX$20.84$25.0110 mg$2.08 / mgout of stocklast verified Aug 25, 2026site gone
- Alpha PeptidesSEMAX$20.84$25.01Size not stated by the vendornot statedin stocklast verified Aug 23, 2026site gone
| Vendor | Size | Price | Per mg | Availability | Checked | Link |
|---|---|---|---|---|---|---|
| Peptide Pros Semax 30mg | 30 mg | $58.25$73.99 | $1.94 | in stock | Aug 22, 2026 | View |
| Biotech Peptides Semax | 25 mg | $53.00 | $2.12 | listed | Aug 22, 2026 | View |
| Biotech Peptides Semax (N-Acetyl) | 25 mg | $57.00 | $2.28 | listed | Aug 22, 2026 | View |
| Paramount Peptides Semax | 30 mg | $68.00 | $2.27 | in stock | Aug 22, 2026 | View |
| Skye Peptides Semax | 30 mg | $69.00 | $2.30 | in stock | Aug 22, 2026 | View |
| Recon Peptides Semax 30mg | 30 mg | $70.00 | $2.33 | in stock | Aug 22, 2026 | View |
| Value Research Labs Semax | 10 mg | $23.99$29.99 | $2.40 | in stock | Aug 24, 2026 | View |
| Swiss Chems Semax 30mg | 30 mg | $73.95$114.95 | $2.47 | in stock | Aug 25, 2026 | View |
| Swiss Chems Semax | not stated | $73.95 | in stock | Aug 25, 2026 | View | |
| Core Peptides Semax | 25 mg | $63.00 | $2.52 | listed | Aug 22, 2026 | View |
| BioLongevity Labs Semax (N-Acetyl Amidate) | 20 mg | $64.97 | $3.25 | in stock | Aug 22, 2026 | View |
| Pure Health Peptides Semax | 10 mg | $33.00 | $3.30 | in stock | Aug 25, 2026 | View |
| Pure Health Peptides Semax | 5 mg | $23.00 | $4.60 | in stock | Aug 25, 2026 | View |
| Pure Health Peptides Semax Liquid | 50 mg | $114.00Starting price, larger sizes cost more | in stock | Aug 24, 2026 | View | |
| NuScience Peptides Semax NA 10mg | 10 mg | $34.99$39.99Sale price, list price not shown | $3.50 | in stock | Aug 24, 2026 | View |
| Go Alpha Labs Peptides Semax (10mg) | 10 mg | $35.99$44.99 | $3.60 | listed | Aug 25, 2026 | View |
| Go Alpha Labs Peptides Semax (5mg) | 5 mg | $24.79$30.99 | $4.96 | listed | Aug 25, 2026 | View |
| Go Alpha Labs Peptides Semax Spray | not stated | $63.99Size not stated by the vendor · Sale price, list price not shown | in stock | Aug 23, 2026 | View | |
| True Peptide Semax | 10 mg | $40.00 | $4.00 | listed | Aug 23, 2026 | View° |
| Ameano Peptides Semax (N-Acetyl Amidate) | 10 mg | $44.00 | $4.40 | in stock | Aug 22, 2026 | View |
| Nextech Labs Semax - 10mg | 10 mg | $45.00 | $4.50 | in stock | Aug 25, 2026 | View |
| Nextech Labs Semax 10mg Air Dispersal Kit | 10 mg | $50.00 | in stock | Aug 25, 2026 | View | |
| PeakForm Peptides Semax | 10 mg | $45.00 | $4.50 | in stock | Aug 24, 2026 | View |
| Peptide Vault Semax 10MG Vial | 10 mg | $45.00 | $4.50 | in stock | Aug 22, 2026 | View |
| Iron Peak Peptides Semax | 10 mg | $50.00 | $5.00 | listed | Aug 22, 2026 | View |
| Proxiva Labs Semax | 10 mg | $50.00 | $5.00 | in stock | Aug 22, 2026 | View |
| Apex Peptide Supply SEMAX | 10 mg | $54.99 | $5.50 | in stock | Aug 23, 2026 | View |
| Apex Peptide Supply SEMAX | 5 mg | $34.99 | $7.00 | in stock | Aug 23, 2026 | View |
| Simple Peptide Semax | 10 mg | $55.00 | $5.50 | in stock | Aug 22, 2026 | View |
| Prime Sciences SEMAX | 10 mg | $58.50$90.00 | $5.85 | in stock | Aug 22, 2026 | View |
| Sigma Compounds Semax (10 MG) | 10 mg | $59.00 | $5.90 | in stock | Aug 25, 2026 | View |
| Sigma Compounds Semax (10 MG) | 10 mg | $69.00 | in stock | Aug 23, 2026 | View | |
| Ascension Peptides Semax | 10 mg | $59.99 | $6.00 | listed | Aug 22, 2026 | View° |
| BioInfinity Lab Semax | 10 mg | $60.00 | $6.00 | in stock | Aug 22, 2026 | View |
| Protide Health Semax | 10 mg | $60.00 | $6.00 | in stock | Aug 22, 2026 | View |
| Protide Health Semax (N-Acetyl Amidate) | 10 mg | $75.00 | $7.50 | in stock | Aug 22, 2026 | View |
| Orion Peptides Semax | 10 mg | $61.00 | $6.10 | in stock | Aug 22, 2026 | View |
| Orion Peptides Semax | 5 mg | $47.00 | $9.40 | in stock | Aug 22, 2026 | View |
| AminoVault Semax | 10 mg | $62.90$74.00 | $6.29 | in stock | Aug 22, 2026 | View |
| American Peptides SEMAX | 10 mg | $65.00 | $6.50 | in stock | Aug 23, 2026 | View°code ALYSSA108066 saves 10% |
| American Peptides SEMAX LIQUID SPRAY | 10 mg | $85.00 | in stock | Aug 23, 2026 | View°code ALYSSA108066 saves 10% | |
| Nationwide Peptides Semax Peptide | 10 mg | $77.00 | $7.70 | in stock | Aug 24, 2026 | View° |
| Nationwide Peptides Semax Peptide | 5 mg | $45.00 | $9.00 | in stock | Aug 24, 2026 | View° |
| Sports Technology Labs Semax | 10 mg | $79.99 | $8.00 | in stock | Aug 22, 2026 | View |
| Stemcode Peptides Semax Vial 10mg | 10 mg | $110.00 | $11.00 | in stock | Aug 24, 2026 | View |
| Stemcode Peptides Semax Nasal Spray | 30 mg | $130.00 | in stock | Aug 24, 2026 | View | |
| Prime Lab Peptides Semax – 5mg | 5 mg | $70.00$90.00 | $14.00 | in stock | Aug 23, 2026 | View |
| Eternal Peptides Semax | 10 mg | $149.99Starting price, larger sizes cost more | $15.00 | in stock | Aug 25, 2026 | View |
| Eternal Peptides Semax | 5 mg | $39.99$40.00starting atStarting price, larger sizes cost more | in stock | Aug 25, 2026 | View | |
| Wellness Research Supply Semax | not stated | $28.00starting at | in stock | Aug 24, 2026 | View | |
| Peak Lab Peptides Semax | not stated | $37.00$216.00Size not stated by the vendor | in stock | Aug 27, 2026 | View | |
| Amino Club SEMAX SPRAY Neuroprotective Peptide Spray | not stated | $38.99$59.99Size not stated by the vendor | in stock | Aug 24, 2026 | View | |
| BioEdge Research Labs Semax (N-Acetyl Amidate) | not stated | $39.00starting atSize not stated by the vendor · Starting price, larger sizes cost more | listed | Aug 22, 2026 | View | |
| Modern Aminos Semax (N-Acetyl) | 10 mg | $42.00starting at | in stock | Aug 25, 2026 | View | |
| Cernum Biosciences Semax | not stated | $43.99Size not stated by the vendor | listed | Aug 22, 2026 | View | |
| Instant Peptides Semax | not stated | $50.00Size not stated by the vendor | in stock | Aug 24, 2026 | View | |
| Prime Peptides Semax | not stated | $50.00starting atStarting price, larger sizes cost more | in stock | Aug 23, 2026 | View | |
| Xcel Peptides Semax | not stated | $59.00$91.00 | in stock | Aug 25, 2026 | View | |
| Peptide Partners Semax | not stated | $60.00starting atStarting price, larger sizes cost more | out of stock | Aug 22, 2026 | View | |
| Licensed Peptides Semax | 30 mg | $76.99starting atStarting price, larger sizes cost more | listed | Aug 22, 2026 | View | |
| Limitless Life Nootropics Semax Nasal Spray 10ml (30mg) 99% Purity, USA Made | not stated | $76.99 | listed | Aug 28, 2026 | View | |
| Limitless Life Nootropics Semax | not stated | members onlySize not stated by the vendor | login required | Aug 22, 2026 | View | |
| Limitless Life Nootropics Semax Spray | not stated | members onlySize not stated by the vendor | login required | Aug 22, 2026 | View | |
| Verified Peptides Semax (N-Acetyl) | not stated | $89.00Size not stated by the vendor | in stock | Aug 22, 2026 | View | |
| LIVV Natural Semax | 25 mg | not published | listed | Aug 22, 2026 | View | |
| Alpha Peptides SEMAX | 10 mg | $20.84$25.01 | $2.08 | out of stock | last verified Aug 25, 2026 | site gone |
| Alpha Peptides SEMAX | not stated | $20.84$25.01Size not stated by the vendor | in stock | last verified Aug 23, 2026 | site gone |
Links and codes marked with a degree sign pay this site a commission when you buy through them. The code also gives you the discount shown. That relationship is disclosed on the vendor page and never changes what this table shows.
17 of 67 offers have something about the listing worth knowing.
Blends containing this compound
- Xcel Peptidesselank:10|semax:10$79.00$99.00
- Sigma Compoundssemax:10mg|oxytocin:5mg$89.00
- Sigma Compoundssemax:10mg|selank:10mg$97.00
- Sigma Compoundssemax:10mg|selank:10mg|oxytocin:5mg$139.00
- Orion Peptidessemax:?|selank:?$116.00Size not stated by the vendor
- American Peptidesselank:5mg|semax:5mg$174.00Price covers a pack, not one vial
| Vendor | Components | Size | Price | Availability | Checked | Link |
|---|---|---|---|---|---|---|
| Xcel Peptides | selank:10|semax:10 | 20 mg | $79.00$99.00 | in stock | Aug 25, 2026 | View |
| Sigma Compounds | semax:10mg|oxytocin:5mg | 15 mg | $89.00 | listed | Aug 25, 2026 | View |
| Sigma Compounds | semax:10mg|selank:10mg | 20 mg | $97.00 | in stock | Aug 23, 2026 | View |
| Sigma Compounds | semax:10mg|selank:10mg|oxytocin:5mg | 25 mg | $139.00 | in stock | Aug 25, 2026 | View |
| Orion Peptides | semax:?|selank:? | not stated | $116.00Size not stated by the vendor | out of stock | Aug 22, 2026 | View |
| American Peptides | selank:5mg|semax:5mg | 10 mg | $174.00Price covers a pack, not one vial | in stock | Aug 23, 2026 | View°code ALYSSA108066 saves 10% |
Links and codes marked with a degree sign pay this site a commission when you buy through them. The code also gives you the discount shown. That relationship is disclosed on the vendor page and never changes what this table shows.
2 of 6 offers have something about the listing worth knowing.
48 vendors shown for Semax, 73 products, 47 of them publish a price. Comparable per mg pricing runs from $1.94 to $15.00 per mg. Most recent check Aug 28, 2026.
Vendor by vendor
What each site was showing when we read it, and how it prices against the rest.
Three things price per mg does not tell you
A cheap milligram is only cheap if the vial holds it.
The label is a claim, not a measurement
Every per mg number here divides the price by the milligrams printed on the vial. Testing labs regularly find vials that weigh less than the label says.
Shipping and card fees are not in these numbers
Shipping is often flat, so it hurts small orders most. Several vendors add a card fee and discount for crypto. Two offers a dollar apart can swap places at checkout.
Bigger vials look cheaper and go off just as fast
A bigger vial costs less per mg and expires on the same schedule. Once mixed, most people work to about 28 days in the fridge, so the saving only counts if you finish it.
How wide the price gap really is
Same compound, same buyers, very different tickets.
Ignoring the few freak listings at each extreme, the dear end of the Semax market costs 3.9 times what the cheap end does, per milligram.
Half these listings charge more than this per mg and half charge less. It moves with sales, which is why every row carries a date.
Enough coverage to show a real range. Anything under three vendors stays off the hub.
What you are actually buying
Regulatory status changes what a price means.
Research only
Semax is approved and prescribed in Russia. It has never been approved in the United States. On July 24, 2026, an FDA advisory committee voted by a narrow margin to recommend adding Semax to the list of substances US pharmacies may compound. The FDA's own scientific reviewers had advised against it. The vote is advice, not a decision, and compounding Semax is still not legal in the US today.
Full Semax record →Nobody stands behind a research vial
There is no pharmacist behind it, no dispensing record, and nobody on the hook for what is inside. The lab report is the whole quality system, which is why it sits next to the price here.
Research use only is a claim the seller has to keep making. A vendor that adds dosing instructions, health claims, or personal-use wording has stepped outside the framework it relies on, and that says something about the seller.
What customs and carriers do varies by state and by shipper. This describes how these products are sold and is not legal advice.
Before the vial arrives
What actually shows up, and the vial maths that decides which size is the better buy.
Frozen dry, refrigerated wet
Freeze-dried powder keeps for a long time in the freezer and for months in the fridge. Once liquid goes in, most people work to about 28 days in the fridge, away from light.
Bacteriostatic water and insulin syringes are extra
What arrives is powder in a sealed vial. Water goes down the inside wall rather than onto the powder, and the vial is swirled instead of shaken. Neither the water nor the syringes are in the prices above.
The bigger vial is only cheaper if you finish it
A larger Semax vial costs less per mg and expires on the same schedule once mixed. The saving is real only when the vial runs out inside that window.
Nothing on this page tells you what to take. Full walkthroughs live in the guides.
How this table is built
What decides the order of the rows, and who gets to be in them.
Cheapest per mg first, and nothing else
Rows sort on one number. There is no combined score and no weighting, so no vendor can be pushed up the table by a rating you cannot check.
Doing badly does not get a vendor removed
Vendors that publish nothing stay in the table, marked. Taking them out would make the market look tidier than we found it.
Every price has a date on it
Prices are read off public catalog pages and saved with the date. If a check runs late the row says so instead of showing an old price as current.
Sorting never reads who pays us
Commissioned links are marked on the row and listed on the disclosure page. They never move a listing up or down the table.
How these prices are collected
Prices on this site are read from vendor websites on the dates shown. A starting tag means the vendor publishes only a from price for that product. A wall means the vendor hides prices behind a login, and we publish that fact rather than hide the gap.
We report prices and never rate or score an offer. There is no value grade, no ranking of vendors by our opinion. A row carries its size, its price, its price per milligram, and any plain fact about the listing worth knowing.
When a vendor's site disappears, its rows stay in the tables as a dated record, drop out of every count, price range and ranking, and lose their links. Sixty days after a vendor's site disappears, its rows leave these tables and remain in our records.
Some vendors pay this site a commission when you buy through our links. Every one of those links is marked, and every vendor with that arrangement is labeled on the vendor page. Commissions never change the prices we show, the order of any table, a vendor's badge, or anything in the audit record. The data is collected the same way for every vendor, paid or not.
We accept no payment for coverage, placement, or ratings. Warning letters come from fda.gov. If a paying vendor earns a bad mark, the mark stays.
Questions about buying semax
Cost, sizes, and how this table works.
How much does semax cost?+
Across 47 vendors it typically runs $2.30 to $9.00 per milligram, with the cheapest sticker price at $23.00. Prices exclude shipping, card fees, and bacteriostatic water.
Why is the same vial so much cheaper at one vendor?+
Vial size, sale cycles, payment method discounts, and how much testing evidence a seller publishes all move the number. A cheap milligram is only cheap if the vial holds what the label claims, which no price column can tell you.
Do you make money if I buy?+
Sorting never reads whether a vendor pays us. Any commissioned link is marked on the row and listed on the disclosure page, and it never changes where a listing lands in the table.
Is semax legal to buy?+
Semax is approved and prescribed in Russia. It has never been approved in the United States. On July 24, 2026, an FDA advisory committee voted by a narrow margin to recommend adding Semax to the list of substances US pharmacies may compound. The FDA's own scientific reviewers had advised against it. The vote is advice, not a decision, and compounding Semax is still not legal in the US today.
How current are these prices?+
Every price is read off a public catalog page and stored with its date; this compound was last read Aug 28, 2026. Nothing is overwritten, so a stale row says so rather than pretending to be current.
Other brain, mood and sleep compounds with price data
Same catalog sweep, same read dates.
