N-Acetyl Semax Amidate_Dosage, benefits & legal status
Also known as NA Semax Amidate, NASA Semax
A longer-lasting version of Semax for focus and memory.
Common vial size is what vendors typically sell, not a recommendation. Enter your own vial in the calculator.
What is N-Acetyl Semax Amidate?
Plain language first. The technical label stays, but it never stands alone.Overview
It does the same focus-and-memory job by raising BDNF, but resists breakdown so it lasts longer.
N-Acetyl Semax Amidate is a chemically tweaked, more stable version of Semax.
What it's used for
A longer-lasting, more stable version of Semax for focus, memory, and mental clarity.
How does N-Acetyl Semax Amidate work?
What it does in the body, and where.This is Semax with two chemical modifications, an acetyl group at one end and an amide at the other, both added to slow its breakdown.
- 01Same BDNF mechanism as SemaxNothing about the target changes.
- 02The modifications resist enzymesWhich extends how long it stays active after a dose.
- 03Even less studied than SemaxSemax has decades of Russian clinical use behind it. This variant does not, and is largely a vendor product.
Where this compound is thought to act.
What else is it used for?
Each use below carries its own evidence level. Approved means regulators have cleared it for that purpose. Investigational means it is in trials. Early research means it is being studied and is not established.
- Focus, memory, and mental clarity, as a longer-lasting version of SemaxResearch only
- Lasting longer per dose than plain Semax, which is the reason to choose itResearch only
The published record
0
Records indexed for N-Acetyl Semax Amidate
Europe PMC was searched on 11 September 2026 and returned nothing.
Counted from Europe PMC indexing, not read by a person.
At a glance
Four things to know about N-Acetyl Semax Amidate
Evidence
Research only
Category
Brain, mood and sleep
Common vial
30 mg
Half-life
Not established
How much, and do you cycle it?
The range, and whether you take breaks.0.2 up to 0.4 mg per day, 1-2x daily. Taken in courses, usually 10 to 14 days, with breaks betweenCommunity practice
Same course pattern as Semax, which it is a longer-lasting version of. No controlled study has compared courses against continuous use.
How long does it stay in the body?
The half-life, and where the figure comes from.Not establishedCommunity practice
The modified version has not been characterised at all. Even plain semax rests on Russian-language work that reports effects rather than clearance.
Not yet traced to a primary source.
You can compare this against the whole library to see where it sits.
What does it cost?
Typical dose and cost, in plain numbers.N-Acetyl Semax Amidate is not injected
It is taken nasal spray, or injected under the skin.
N-Acetyl Semax Amidate starts at $64.97 across 4 vendors, typically $2.97 – $3.25 per mg.
6 listings, last read Sep 5, 2026. Shipping and card fees are not included.
How do you store it?
Before mixing, and after.Fridge after opening. Use within about 30 days.
Store sealed N-Acetyl Semax Amidate in the fridge. Once opened, keep it upright in the fridge and plan to finish it inside roughly 30 days. Keep it out of light and do not freeze the liquid.
What are the side effects and cautions?
Known cautions and warnings for this compound.Who should avoid it
- No formal contraindications established outside Russia
- Pregnancy
Stop and get help
- No serious adverse events have been reported at studied doses
- Signs of an allergic reaction
Common effects
- Mild nasal irritation, from nasal use
- Occasional short-lived headache
- Possible difficulty sleeping if taken late in the day
- No tolerance, dependence, or withdrawal has been documented
- Nothing is documented about injecting it
- This is a modified, longer-lasting version of Semax, so its safety is inferred from Semax rather than measured separately.
Where this page says nothing is established, that means nobody has studied it, not that a compound is safe.
Is N-Acetyl Semax Amidate approved?
And where the numbers on this page come from.No. N-Acetyl Semax Amidate is not approved for any use, anywhere. It is sold labelled for laboratory research only, and there is no legal route to buy it for human use.
- Approval statusResearch only
- RouteNasal spray, or injected under the skin
- CheckedJuly 2026
What has happened recently
We have not yet written a full regulatory note for this compound. The status above is current as of the date shown.
You can compare this against the whole library, or read how to check a seller.
- DoseFrom research and community reports. No regulator has reviewed this dose.
- Vial sizeFrom what vendors typically list; not a recommendation.
- Sources
- Reviewed22 July 2026
What else is like N-Acetyl Semax Amidate?
Others in Brain, mood and sleep, side by side.If you're weighing N-Acetyl Semax Amidate, it's worth reading DSIP (Delta Sleep-Inducing Peptide), Dihexa, and Methylene Blue in the same class.
A longer-lasting version of Semax for focus and memory.
- Dose
- 0.2 up to 0.4 mg per day
- How often
- 1-2x daily
A before-bed peptide used to deepen sleep.
- Dose
- 0.1 up to 0.2 mg per dose (start low, increase slowly)
- How often
- Nightly
A very potent experimental peptide studied for memory and brain connections.
- Dose
- 5 up to 20 mg per day (start low, increase slowly)
- How often
- Daily
A low-dose blue compound taken for focus and energy.
- Dose
- 5 up to 15 mg per day
- How often
- Daily
Guides for this compound
- How to Reconstitute a Peptide
Mix peptide powder with bacteriostatic water, step by step.
- How to Read an Insulin Syringe
Read the units, convert to millilitres, and draw the exact dose.
- mcg vs mg: The Peptide Dosing Mistake to Avoid
Your vial says mg and your protocol says mcg. Here is the conversion and how to check it.
- How to Read a Peptide COA
What the purity number does and does not tell you, and how to spot an edited report.
- How to Vet a Peptide Vendor
Independent COAs, HPLC purity, and the red flags that mean walk away.
Sources
- FDA, bulk drug substances nominated for use in compounding under section 503A, updated 14 May 2026(2026)Read this against what FDA did with Semax itself, which went before the agency's Pharmacy Compounding Advisory Committee in July 2026. This compound is not Semax. It is an acetylated amide derivative, and FDA treats even a free base and its acetate salt as different active ingredients with potentially different safety profiles. It appears in none of the three categories on this list. This list is the comprehensive record of what has been proposed for pharmacy compounding since the process opened in 2013, when over two thousand substances were nominated, so absence from all three categories means no one has ever put this compound forward.
Last reviewed 22 July 2026