NA-Selank Amidate
N-Acetyl Selank Amidate · Enhanced Anxiolytic Nootropic
NA-Selank Amidate is an enhanced version of Selank, the anxiolytic nootropic peptide developed at Russia's Institute of Molecular Genetics. The N-acetyl group improves blood-brain barrier penetration and creates more stable metabolites, while the C-terminal amidation further enhances metabolic stability and receptor binding. Unlike benzodiazepines, it provides anxiety relief without sedation, dependency, or cognitive impairment.
Overview
NA-Selank Amidate is an enhanced version of Selank, the anxiolytic nootropic peptide developed at Russia's Institute of Molecular Genetics. The N-acetyl group improves blood-brain barrier penetration and creates more stable metabolites, while the C-terminal amidation further enhances metabolic stability and receptor binding. Unlike benzodiazepines, it provides anxiety relief without sedation, dependency, or cognitive impairment.
NA-Selank Amidate modulates multiple neurotransmitter systems including GABA, dopamine, and serotonin, while regulating brain-derived neurotrophic factor (BDNF). It allosterically modulates GABAA receptors without causing the sedation or dependency of benzodiazepines. The peptide activates serotonin metabolism in the hypothalamus and brainstem, and increases BDNF levels to promote neuronal growth and differentiation.
Research indications
What the compound has been studied for, grouped by body system. Effect size is the reported magnitude where it was measured — not a recommendation.
Standard Selank approved in Russia for GAD; NA-Selank Amidate offers enhanced delivery.
Modulates stress response through GABA and serotonin systems without sedation.
Improves mood through serotonin metabolism activation.
Increases memory trace stability for up to 30 days in animal studies.
BDNF elevation supports learning and neuroplasticity.
BDNF increase reduces effects of neurological injury.
Based on tuftsin structure, retains immunomodulatory properties.
A large effect in a weak study and a small effect in a strong one are different things. Effect size is never evidence of use in people.
- Class
- Modified heptapeptide
- Chain length
- 7 residues
- Molecular weight
- 864 Da
- Half-life
- ~5 h
- Typical dose
- 200-500mcg per administration
- Frequency
- 1-2x daily for 14-20 days
- Cycle length
- 2-3 weeks (14-20 days)
- Storage
- Refrigerate at 2-8°C
Molecular data
- Type
- Modified heptapeptide
- Molecular weight
- 864 Da
- Chain length
- 7 residues
- Half-life
- 300 min
Dosing reference
Doses reported in the literature and by suppliers. These are a record of what has been used in research — reference, never instruction.
| Context | Route | Amount | Frequency |
|---|---|---|---|
| Anxiety relief | Intranasal | 250-500 mcg | 1-2x daily |
| Cognitive enhancement | Intranasal | 200-400 mcg | 1-2x daily |
| Standard protocol | Intranasal | 300 mcg | 1-2x daily for 14 days |
| Alternative delivery | SubQ | 250-500 mcg | 1-2x daily |
Interactions
Often combined for comprehensive cognitive enhancement and mood support.
Enhanced versions combine well for cognitive and anxiolytic effects.
Different nootropic mechanisms; can be combined.
No known negative interactions.
Quality checklist
- ✓White to off-white lyophilized powder
- ✓Clear solution after reconstitution
- ✓Intact vacuum seal
- !Slight clumping that dissolves easily
- ×Discolored powder
- ×Cloudy or particulate solution
- ×Unusual odor
What to expect
Safety
- Generally well-tolerated
- Mild nasal irritation (intranasal)
- Fatigue (rare)
- Allergic reactions
- Paradoxical anxiety increase
- Unusual mood changes
- Pregnancy or breastfeeding
- Known hypersensitivity to Selank or tuftsin
- Severe psychiatric conditions (consult professional)
FAQ
How is NA-Selank Amidate different from standard Selank?
NA-Selank Amidate has two key modifications: N-terminal acetylation and C-terminal amidation. These changes enhance blood-brain barrier penetration, create more stable metabolites, and extend the half-life compared to standard Selank. The result is superior anxiolytic and cognitive effects with potentially longer duration of action.
Can I use NA-Selank Amidate without taking breaks between cycles?
No. The file recommends limiting cycles to 2-3 weeks with breaks between them to prevent potential GABAergic desensitization. Continuous use without breaks may reduce effectiveness over time, similar to tolerance that develops with benzodiazepines, though NA-Selank Amidate has no reported dependency.
Does intranasal NA-Selank Amidate work faster than injection?
Yes. The intranasal route provides direct access to the brain and has faster onset (15-30 minutes) compared to subcutaneous injection. However, both routes are effective—the choice depends on convenience and bioavailability preferences.
Will NA-Selank Amidate interfere with my anxiety medication?
That depends on your medication. NA-Selank Amidate works through GABA and serotonin systems. If you're on benzodiazepines or SSRIs, consult your healthcare provider before combining, as the effects may be additive. The peptide is designed to work without causing the sedation or dependence of benzodiazepines, making it potentially safer when used under guidance.