Semax
Semax lists at $29 to $45 for a 5mg vial across 15 vendors, with a median of $31 (prices as of September 2026).
View Semax research profileA synthetic analog of ACTH 4-10 with cognitive-enhancing properties, used in Russia for stroke recovery and cognitive impairment.
Select Dosage
Best Value marks the lowest in-stock price per mg.
- BEST VALUE
MorphopeptideCOA4.8In StockCOA$29.00$5.80/mg · 5mg 
Onward AminosCOA4.7In StockCOA$29.00$5.80/mg · 5mg
Amino FoundryCOA4.9In StockCOA$30.00$6.00/mg · 5mg
Prove It PerformanceCOA4.8In StockCOA$30.00$6.00/mg · 5mg
NeurolevelCOA4.7In StockCOA$30.00$6.00/mg · 5mg
Rational Research4.7In Stock$30.00$6.00/mg · 5mg
Kaizen Chemicals4.8In Stock$30.00$6.00/mg · 5mg
Cowboy ChemsCOA4.7In StockCOA$31.00$6.20/mg · 5mg
Evo AminoCOA4.8In StockCOA$32.00$6.40/mg · 5mg
MetatideCOA4.8In StockCOA$35.00$7.00/mg · 5mg
Amino LineCOA4.7In StockCOA$35.00$7.00/mg · 5mg
Black Series LabCOA4.8In StockCOA$37.50$7.50/mg · 5mg
Valitec PeptidesCOA4.9In StockCOA$40.00$8.00/mg · 5mg
Ever VitalCOA4.8In StockCOA$40.00$8.00/mg · 5mg
Amino KineticsCOA4.8In StockCOA$45.00$9.00/mg · 5mg
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About This Comparison
This page tracks listed prices for Semax across 15 research-compound vendors, spanning 2 vial sizes. Prices are shown in USD and normalized to a per-mg cost so sizes can be compared directly. In-stock status is tracked per size, and the lowest in-stock price per mg is flagged as best value. For mechanism, dosing ranges, half-life and citation data, see the Semax research profile.
Methodology
- Prices are aggregated from listed research-compound vendor catalogs and refreshed on a regular cadence.
- Per-mg cost is computed from each vendor's listed vial size, so a lower total price is not always the lower per-mg price.
- Certificate of Analysis (COA) availability is flagged per vendor where a third-party lab report is provided.
- Listings are compiled for research purposes only. Amino Axiom does not sell compounds and does not verify vendor claims beyond published COA data.
Last updated September 23, 2026