Mind & sleep

NA Semax Amidate

Terminally modified Semax analogue

No FDA-approved product identified for this exact research entry in the targeted review.

What does it do?

NA Semax Amidate is marketed as N-acetyl Semax with a C-terminal amide. Parent Semax findings do not establish this exact analogue’s effects or improved delivery.

Cognition

Pep-Pedia reports cognition interest; exact-analogue clinical benefit remains unverified.2

Compare doses by goal

Molecular information

27

Amino-acid sequence

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7

Residue count only · sequence not verified27

An exact sequence has not been verified for this formulation.

Reference identity · not independently confirmed7

Length7 amino acids
Molecular weight · Da1,007.16 Da
Molecular formulaNot independently verified27

The exact formulation, clinical benefits and long-term safety require further verification.

How long does it stay in the body?

Pharmacokinetics · How quickly the compound clears.

Half-lifeHuman half-life not verified2

No numerical human elimination estimate was verified for the exact material in this review.

There is not enough numerical information in the checked sources to show a clearance curve.

What to expect

Study outcomes

Exact analogue has an evidence gap

No controlled human trial of this exact modified analogue was verified.1

Reported timelines

Reference & community

Nasal: 15–30 min onset, 1–2h peak, 2–12h taper

Source-reported, unvalidated derivative timeline.7

Injection: 30–60 min onset, 2–4h peak

No established clinical response schedule.7

These are reported timelines, not a prediction of your response.

Doses by goal

These are reported practices from secondary sources, not validated dosing recommendations.

6 rows
Route

Scroll to compare all columns →

One row for each documented route and dose or dose range
GoalDoseFrequencyRouteDurationSource
Cognitive enhancement600μg1x dailyIntranasalNasal spray10-30 days7
Mental fatigue resistance800μg1x dailyIntranasalNasal spray10-30 days7
Memory enhancement600μg2x dailyIntranasalNasal spray10-30 days7
Neuroprotection1200μg1x dailyIntranasalNasal spray10-30 days7
Research protocol200μg1x dailySubQ7-21 days7
Neuroprotection study400μg1x dailySubQ7-21 days7

Cycles & timing

Reference reports7

Reported use periods and breaks. These do not establish a safe cycle or prove that breaks prevent tolerance.

Nasal

Use period
10-30 days
Break
Equal length break
Reported timing

Morning or early afternoon

Injectable

Use period
7-21 days
Break
Equal break
Reported timing

Morning preferred

Side effects & safety

Evidence limitation

Comparative human potency and exposure are unknown.

1

Evidence limitation

Parent Semax tolerability cannot be assumed to cover this modified compound.

1

Additional reported cautions

Reference reports7

Local/systemic effects

Nasal irritation/bleeding, headache, insomnia, allergy or injection infection; pregnancy safety unknown.

Quality and route

Congestion changes absorption; sterile preparation does not establish efficacy/safety.

Not a complete safety screen. Discuss health decisions with a qualified clinician.

Combinations & interactions

7 entries

Check cautions and reported pairings. A compatibility claim does not establish that a combination is safe.

Modafinil

Caution reported

Possible overstimulation.7

Reference report · Pep-Pedia label: Monitor Combination

Blood-pressure medicines

Caution reported

Possible vascular effects.7

Reference report · Evidence context: Monitor combination

MAO inhibitors

Avoidance reported

Uncharacterized neurotransmitter interaction.7

Reference report · Pep-Pedia label: Avoid Combination

NA Selank amidate

Unverified pairing

Untested cognitive/anxiety pairing.7

Reference report · Pep-Pedia label: Synergistic

BPC-157

Unverified pairing

Safety unestablished.7

Reference report · Pep-Pedia label: Compatible

Lion's mane

Unverified pairing

Neurotrophic hypothesis.7

Reference report · Pep-Pedia label: Compatible

Other medicines or peptides

Not established

No exact-product human interaction study was verified; lack of evidence is not evidence of safety.2

Research context

Reconstitution

No validated preparation identified

No product-specific preparation or stability instruction was verified. A dilution calculation does not establish suitability for injection.2

Reference preparation details

Reported handling information, not a validated formulation or instruction to prepare an injectable product.

Nasal

Pep-Pedia distinguishes preservative-free saline from BAC water for nasal preparations.

Solvents mentioned
Sterile saline / Bacteriostatic water — source alternative
Reported parameters
Source-reported intervals: saline, 24–48 hours; BAC water, 28 days; both refrigerated. · It warns that benzyl alcohol in BAC water may irritate nasal tissue.

The source also suggests frozen aliquots; it does not establish validated stability or container compatibility for every nasal formulation.

Injectable

The injectable steps name BAC water and refrigeration.

Solvents mentioned
Bacteriostatic water
Reported parameters
Reported interval: 28 days.
7

Appearance & documentation

Appearance and a purity certificate cannot establish sterility, identity, or suitability for injection.

Reported appearanceWhite, fluffy powderReported appearanceClear solutionReported concernDiscolored powder
7

Available forms

No verified packaging examples included.

Packaging examples, not a market survey. Approved and research products are not interchangeable.

Storage after mixing

Reconstituted research vials

Pep-Pedia reports these handling limits after mixing. They are not validated stability or sterility limits for your vial.

Nasal

Unverified report7
Source-reported intervals: saline, 24–48 hours; BAC water, 28 days; both refrigerated.

Injectable

Unverified report7
Reported interval: 28 days.

Storage notes

7
Nasal

Refrigerate 2-8°C

Injectable

Refrigerate

Storage depends on the formulation, diluent, container, and handling. Follow the specific product label or pharmacist’s instructions.

Evidence limits

View findings →

No controlled human trial of this exact modified analogue was verified.1

Unverified. Human administration evidence for this exact compound has not been verified. Parent-compound research is not equivalent.

Evidence definitions →

Research findings

No human data verified

Source context

Source's 'proven efficacy' and superior bioavailability language overstates verified derivative-specific evidence. Interaction labels are hypotheses.

Compound identity & other names

NA Semax Amidate is marketed as N-acetyl Semax with a C-terminal amide. Parent Semax findings do not establish this exact analogue’s effects or improved delivery.

No FDA-approved product identified for this exact research entry in the targeted review.

Terminally modified Semax analogue27

Pep-Pedia identity record

7 amino acids · 1,007.16 Da

Asn-Ala-Met-Glu-His-Phe-Pro-Gly-Pro-NH₂

Reference description; checked chemical identity takes precedence when available.7

How it may work

Proposed neurotrophic/neurotransmitter pathways; direct nasal brain access and systemic bioavailability require derivative-specific confirmation.7

Exact analogue has an evidence gap

Parent-Semax experiments do not establish that acetylation and amidation preserve benefit, improve brain exposure, or make a safe human product.

1

Research areas and evidence gaps

  • No controlled human trial of this exact modified analogue was verified.
  • A product-specific research-vial quantity was not independently verified in this review.

Additional uses listed by Pep-Pedia

Focus, learning and memory. Source reports attention, fatigue resistance and consolidation; direct clinical evidence limited.7

Neuroprotection and stroke recovery. Parent-compound/experimental extrapolation, not an established derivative indication.7

Delivery research. Nasal/injectable exposure claims require measured PK.7

Community reports Unvalidated

Pep-Pedia discusses cognition and mental fatigue interest.2

Editorial summary, not a measured community survey, clinical protocol or recommendation.

Search coverage and review status

No exact-analogue controlled human trial was verified. Recent parent-Semax cell research is labeled as indirect.

Checked
2026-10-12
Search
"N-acetyl" "Semax" "2025" study
Catalog
Pep-Pedia ↗ · 4 listed references retained
  • Targeted search and selected primary-source checks, not an exhaustive systematic review.
  • Preserved bibliography entries marked unreviewed have not had their findings independently verified.

AI-prepared summaries. Independent medical editorial review is pending.

Community poll 10 topics · Pep-Pedia snapshot

Voluntary, unverified reports. These percentages do not measure effectiveness or safety.

Primary goal

Cognitive enhancement94%
General wellness3%
Other: PMDD luteal phase suppose2%
Other: Cognitive function 2%

Number of responses to this question: not disclosed.

Source & limitations

The source displays “661 responses” for this profile. This is not a confirmed participant count or a denominator for individual questions.

  • Voluntary self-reports from Pep-Pedia visitors; identity, treatment, outcomes and timing are unverified. These data are not efficacy or safety estimates.
  • The source displays a profile-wide response label, not a confirmed unique participant count. It stays unchanged across questions. Question-specific denominators and absolute option counts are not exposed.
  • Only the top five categories are displayed for some questions. Extra categories are retained as an undisplayed-category count; their labels and percentages are unavailable.
  • Displayed percentages are rounded. They may not total 100%, especially where categories are hidden.
  • This is a dated snapshot, not a live survey or current recommendation.

References

Original sources and review status. Open a reference to read its summary.

7 sources

1The Effect of Peptide Semax, an ACTH(4-10) Analogue, on Intracellular Calcium Dynamics in Rat Brain NeuronsPreclinical · 2025 · pubmed.ncbi.nlm.nih.govAbstract checked
AI-PREPARED SUMMARY

This study used parent Semax in rat brain slices, not N-acetyl Semax amidate. Calcium-signaling observations cannot establish the modified analogue’s effects.

Exact analogue has an evidence gap

Parent-Semax experiments do not establish that acetylation and amidation preserve benefit, improve brain exposure, or make a safe human product.

Additional research · Checked 2026-10-12

Original source
2Pep-Pedia: NA Semax AmidateCommunity · Accessed 2026 · pep-pedia.orgCommunity source checked
AI-PREPARED SUMMARY

Secondary editorial profile and reported practices; not clinical validation.

Original source
3Default Mode Network Enhancement (2018)No study link suppliedReference · Accessed 2026 · pep-pedia.orgPep-Pedia report · Primary source not checked
AI-PREPARED SUMMARY

Pep-Pedia reports: The reported imaging changes concern parent Semax, not the amidated derivative; an fMRI change alone does not establish better memory.

Reported population / model
24 participants

Reported study details
1% solution intranasal · fMRI monitoring · DMN volume increase

Pep-Pedia supplies no original study link for this card. Study identity, design, doses and result remain unverified. No study link supplied

Read the Pep-Pedia report ↗

Pep-Pedia reference card; original summary of its reported findings · Checked 2026-10-12

Source report
4Stroke Recovery and BDNF Enhancement (2018)No study link suppliedReference · Accessed 2026 · pep-pedia.orgPep-Pedia report · Primary source not checked
AI-PREPARED SUMMARY

Pep-Pedia reports: Parent Semax studies reportedly linked higher BDNF with motor recovery after stroke; the modified NA-Semax product was not directly tested.

Reported population / model
110 stroke patients

Reported study details
10-day treatment protocol · BDNF level monitoring · Motor function improvement

Pep-Pedia supplies no original study link for this card. Study identity, design, doses and result remain unverified. No study link supplied

Read the Pep-Pedia report ↗

Pep-Pedia reference card; original summary of its reported findings · Checked 2026-10-12

Source report
5Gene Expression and Neuroprotection (2014)No study link suppliedReference · Accessed 2026 · pep-pedia.orgPep-Pedia report · Primary source not checked
AI-PREPARED SUMMARY

Pep-Pedia reports: Parent Semax altered immune, vascular and injury-response gene expression in rat brain-ischemia models; amidated-product efficacy was not tested.

Reported population / model
Rat model

Reported study details
Genome-wide analysis · 3-24 hour timepoints · 96+ gene expression changes

Pep-Pedia supplies no original study link for this card. Study identity, design, doses and result remain unverified. No study link supplied

Read the Pep-Pedia report ↗

Pep-Pedia reference card; original summary of its reported findings · Checked 2026-10-12

Source report
6Cognitive Enhancement in Fatigued Subjects (1996)No study link suppliedReference · Accessed 2026 · pep-pedia.orgPep-Pedia report · Primary source not checked
AI-PREPARED SUMMARY

Pep-Pedia reports: The source reports memory accuracy of 71% versus 41% during demanding work conditions with Semax; this is not direct NA-Semax-amidate evidence.

Reported population / model
Human study

Reported study details
250-1000μg intranasal · 24-hour effects · 71% vs 41% memory accuracy

Pep-Pedia supplies no original study link for this card. Study identity, design, doses and result remain unverified. No study link supplied

Read the Pep-Pedia report ↗

Pep-Pedia reference card; original summary of its reported findings · Checked 2026-10-12

Source report
7Pep-Pedia: NA Semax Amidate — route-specific referenceReference page checked; underlying claims require separate verification.Community · Checked 2026 · pep-pedia.orgCommunity source checked
AI-PREPARED SUMMARY

Source page checked across available routes. Protocols, cycles, storage, mechanisms and pairing claims are secondary reports; checking the page does not independently validate those claims. Original concise summaries are used here.

Content coverage audit · Checked 2026-10-12

Original source
Source details