NA Semax Amidate
Also known as: N-Acetyl Semax Amidate
Enhanced Nootropic Peptide | Cognitive Enhancement & Neuroprotection
Overview
Enhanced and stabilized version of Russian nootropic Semax with superior stability, extended half-life, and enhanced bioavailability through acetylation and amidation modifications.
Key benefits
- Direct brain access via olfactory nerves
- Rapid onset (15-30 minutes)
- Proven cognitive efficacy
- Extended half-life vs standard Semax
- Enhanced BDNF upregulation
Mechanism of action
Bypasses blood-brain barrier via olfactory nerves with direct brain access; enhances BDNF upregulation and hippocampal plasticity.
Molecular data
- Type
- Modified ACTH analog
- Half-life
- 2-10 hours
Sequence
Asn-Ala-Met-Glu-His-Phe-Pro-Gly-Pro-NH₂
Indications
What the research community uses this compound for, with self-reported effectiveness.
Cognitive
Enhanced Focus and Attention
Most effectiveRapid improvement in sustained attention, working memory, and mental clarity within 15-30 minutes.
Memory Formation
Most effectiveEnhances both short-term and long-term memory consolidation through BDNF upregulation.
Mental Fatigue Resistance
Most effectiveSignificant improvement in cognitive performance during mental fatigue, with lasting effects.
Neuroprotection
Stroke Recovery Support
EffectiveAccelerates functional recovery through enhanced neuroplasticity and BDNF elevation.
Oxidative Stress Protection
EffectiveProtects against neural oxidative damage and supports cellular repair mechanisms.
Neurotrophic Factor Enhancement
EffectiveRapidly increases BDNF and TrkB receptor expression, supporting neuronal survival.
Memory
Episodic Memory Enhancement
EffectiveImproves episodic memory formation and recall through default mode network optimization.
Learning Acceleration
ModerateEnhances acquisition of new information through improved synaptic plasticity.
Dosing protocols
Common protocols by delivery method. Adjust the curve below to model accumulation in your own cycle.
Nasal
Direct brain access via olfactory nerves with rapid onset and proven efficacy.
| Protocol | Dose | Frequency | Route / duration |
|---|---|---|---|
| Cognitive enhancement | 600mcg | 1x daily | Intranasal spray |
| Mental fatigue resistance | 800mcg | 1x daily | Intranasal spray |
| Memory enhancement | 600mcg | 2x daily | Intranasal spray |
| Neuroprotection | 1200mcg | 1x daily | Intranasal spray |
Preparation
You will need
- NA Semax Amidate lyophilized powder
- Sterile saline solution (0.9% NaCl)
- Nasal spray bottles (sterile)
- Precision scale for dosing
Steps
- Calculate desired concentration (0.1% or 0.3%)
- Add sterile saline slowly to powder
- Swirl gently until dissolved
- Transfer to nasal spray bottle
- Label and refrigerate
Work out the water volume and syringe units in the reconstitution calculator →
Injectable
Research applications with 100% bioavailability and precise dosing control.
| Protocol | Dose | Frequency | Route / duration |
|---|---|---|---|
| Research protocol | 200mcg | 1x daily | SubQ |
| Neuroprotection study | 400mcg | 1x daily | SubQ |
Preparation
You will need
- Lyophilized powder
- Bacteriostatic water
- Insulin syringes
- Alcohol swabs
Steps
- Add BAC water slowly
- Swirl until dissolved
- Store refrigerated
- Use within 28 days
Work out the water volume and syringe units in the reconstitution calculator →
Interactions
Pairwise interactions with other compounds you might be cycling — the same data behind the cycle builder's safety check.
MAO Inhibitors
AvoidSemax affects neurotransmitter systems; combination may cause unpredictable effects.
Modafinil
MonitorBoth affect focus; combination may cause overstimulation in some individuals.
Blood Pressure Medications
MonitorMonitor blood pressure as Semax may affect vascular function.
NA Selank Amidate
SynergisticExcellent combination providing comprehensive cognitive support with nootropic and anxiolytic benefits.
BPC-157
CompatibleDifferent mechanisms with complementary neuroprotective benefits.
Lion's Mane
CompatibleBoth enhance BDNF and neuroplasticity; may provide additive cognitive benefits.
Timeline
Typical week-by-week effects reported in clinical and observational data.
- 15-30 minutes
Initial cognitive clarity and focus improvement
- 1-2 hours
Peak cognitive enhancement and mental alertness
- 2-6 hours
Sustained attention and memory benefits
- 6-12 hours
Gradual return to baseline with lasting effects
Safety
Reported adverse effects, contraindications, and what to monitor on cycle.
Common side effects
- Mild nasal irritation (intranasal)
- Slight headache initially
Stop signs — stop and seek advice
- Persistent nasal irritation, burning, or bleeding
- Severe headaches or dizziness after administration
- Unusual mood changes, anxiety, or agitation
- Sleep disturbances or insomnia
- Any allergic reactions (swelling, rash, difficulty breathing)
- Significant changes in blood pressure or heart rate
Contraindications
- Not recommended during pregnancy
- Active nasal congestion or sinus infection
- Individuals on neurotransmitter-affecting medications without consultation
Monitoring
- Use sterile solutions only
- Start with lower doses
- Avoid if nasal congestion present
Quality checks
What a legitimate product looks like, what should give pause, and what should make you stop.
Good signs
- White, fluffy powder that reconstitutes clearly
- Clear solution with no particles or cloudiness
- Third-party purity testing certificates showing >98% purity
Warning signs
- Ensure proper cold chain maintained during shipping
Stop signs — don't use
- Discolored powder (yellow or brown indicates degradation)
- Cloudiness after reconstitution indicates contamination
Recent research
Newer papers and trial readouts on file for this compound, with source and date.
2025 · International Journal of Molecular Sciences
The Potential of the Peptide Drug Semax and Its Derivative for Correcting Pathological Impairments in the Animal Model of Alzheimer's Disease
Semax and its derivative improved cognitive functions in transgenic Alzheimer's mice; amyloid plaque count decreased 2.8-fold, supporting potential for enhanced derivatives like NA-Semax-Amidate.
2022 · ACS Chemical Neuroscience
Semax, a Synthetic Regulatory Peptide, Affects Copper-Induced Abeta Aggregation and Amyloid Formation
Semax prevents formation of Abeta:Cu2+ complexes and inhibits amyloid fiber formation, demonstrating anti-aggregating properties relevant to Alzheimer's disease.
2025 · British Journal of Pharmacology
Semax Peptide Targets Mu Opioid Receptor Gene Oprm1 for Functional Recovery After Spinal Cord Injury
Semax improved spinal cord injury functional recovery and inhibited pyroptosis by targeting mu-opioid receptors, expanding understanding of Semax-family peptide neuroprotective mechanisms.
References
Primary literature and clinical-trial data informing this entry.
A Nootropic Adrenocorticotropin Analog 4-10 Semax: 15 Years Experience in Its Design and Study (Parent Compound)
Ashmarin IP, Nezavibatko VN, Levitskaya NG, et al. · Zhurnal Vysshei Nervnoi Deiatelnosti imeni I.P. Pavlova · 1997
Foundational Semax review: intranasal doses of 0.015-0.050 mg/kg stimulate operative memory and attention for 20-24 hours. NA-Semax-Amidate modifications extend half-life and enhance bioavailability.
Effects of Semax on the Default Mode Network of the Brain (Parent Compound)
Dolgorukova AM, Klyushnik TP, Gusev EI, et al. · Bulletin of Experimental Biology and Medicine · 2018
24 healthy volunteers; resting-state fMRI showed increased default mode network volume in medial frontal cortex after intranasal 1% Semax vs placebo, enhancing episodic memory.
The Efficacy of Semax in the Treatment of Patients at Different Stages of Ischemic Stroke (Parent Compound)
Gusev EI, Barskov IV, et al. · Zhurnal Nevrologii i Psikhiatrii imeni S.S. Korsakova · 2018
110 ischemic stroke patients; Semax (6000 mcg/day intranasal) increased BDNF plasma levels and accelerated functional recovery during rehabilitation.
The Peptide Semax Affects the Expression of Genes Related to the Immune and Vascular Systems in Rat Brain Focal Ischemia (Parent Compound)
Dergunova LV, Limborska SA, et al. · BMC Genomics · 2014
Genome-wide analysis of ischemized rat brain cortex: Semax modulated 24 vascular genes and enhanced immune-response gene expression including immunoglobulins and chemokines.
Semax, an Analog of ACTH(4-10), Regulates BDNF and trkB Expression in the Rat Hippocampus (Parent Compound)
Dolotov OV, Karpenko EA, Inozemtseva LS, et al. · Brain Research · 2006
Single application at 50 mcg/kg produced 1.4-fold increase in BDNF protein and 1.6-fold increase in trkB tyrosine phosphorylation in rat hippocampus.
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