What is Selank?
Selank is a synthetic heptapeptide based on the naturally occurring immunomodulatory peptide tuftsin. Developed at the Institute of Molecular Genetics of the Russian Academy of Sciences (the same lab behind Semax), Selank was designed to combine anxiolytic effects with cognitive enhancement. It has been approved in Russia as a treatment for generalized anxiety disorder and neurasthenia since 2009.
What sets Selank apart from conventional anti-anxiety medications is its mechanism. Benzodiazepines work by enhancing GABA-A receptor activity, producing sedation, tolerance, and dependency. Selank modulates GABA without the same receptor binding pattern, so it reduces anxiety without clouding your thinking or causing withdrawal symptoms. Users consistently describe it as producing calm alertness: less rumination, less reactivity to stress, but no mental fog.
Selank also carries genuine nootropic properties. It upregulates enkephalin expression, modulates IL-6 levels, and influences the balance between excitatory and inhibitory neurotransmission. The cognitive effects are subtler than Semax but real: improved memory consolidation, better sustained attention, and clearer decision-making under stress.
The most popular way to use Selank is as part of a stack with Semax. Semax provides the stimulatory cognitive push, while Selank smooths out any overstimulation and adds anxiety reduction. This combination has years of clinical and anecdotal support. Use the Peptide Stack Calculator to map out timing and dosing for this pairing.
How Selank Works
Selank acts through several interconnected pathways that explain its dual anxiolytic-nootropic profile:
GABAergic Modulation: Selank enhances the activity of the GABAergic system without directly binding to GABA-A receptors in the way benzodiazepines do. Instead, it modulates the sensitivity and turnover of GABA, producing anxiolysis without sedation, tolerance, or withdrawal. This is a critical distinction for anyone looking for a sustainable anti-anxiety approach.
Enkephalin Stabilization: Selank inhibits the enzymatic degradation of enkephalins (endogenous opioid peptides), extending their half-life and activity. Enkephalins play a role in mood regulation, pain modulation, and stress response. By stabilizing them, Selank produces a gentle mood-lifting and stress-buffering effect.
Monoamine Modulation: Selank influences serotonin metabolism in the brain, particularly in the frontal cortex and hippocampus. It stabilizes serotonin turnover rather than simply increasing it, which likely contributes to its anxiolytic properties without the emotional blunting sometimes seen with SSRIs.
Immune Regulation: As a tuftsin analogue, Selank retains immunomodulatory activity. It influences the expression of interleukin-6 (IL-6), interferon-gamma, and other cytokines. This bidirectional immune modulation (boosting underactive immunity, calming overactive inflammation) sets it apart from purely brain-focused anxiolytics.
Gene Expression: Studies show Selank alters the expression of 36 genes related to the nervous and immune systems, with effects appearing within hours. This broad genomic influence explains why its benefits often extend beyond simple anxiety reduction into cognitive and immune territory.
Benefits of Selank
Anxiety Reduction Without Sedation: This is the primary benefit and the reason Selank was developed. Clinical trials in Russia demonstrated significant reductions in anxiety scores (Hamilton Anxiety Rating Scale) comparable to benzodiazepines, but without the sedation, cognitive impairment, or dependency risk. Users can take it before high-pressure situations and remain sharp.
Improved Stress Resilience: Selank helps the brain handle stress more efficiently by modulating the HPA axis and enkephalin systems. Rather than suppressing the stress response entirely, it raises the threshold for stress activation. You still react to genuine threats, but minor stressors stop triggering disproportionate anxiety.
Cognitive Enhancement: While Selank is primarily an anxiolytic, its cognitive benefits are measurable. Studies show improvements in memory consolidation and attention, particularly in stressful conditions where anxiety would normally impair performance. The cognitive gain comes partly from anxiety reduction (less mental noise) and partly from direct effects on neurotransmitter balance.
Immune System Support: Selank modulates both innate and adaptive immunity. Clinical research shows it can boost immunoglobulin levels, normalize cytokine profiles, and enhance natural killer cell activity. This makes it relevant beyond psychiatric use, particularly for individuals dealing with chronic infections or immune dysfunction.
No Tolerance or Dependency: Unlike benzodiazepines, SSRIs, and most other anxiolytics, Selank does not produce tolerance with repeated use and carries no withdrawal syndrome. You can use it daily during a cycle without needing to escalate the dose.
Mood Stabilization: Through its effects on enkephalins and serotonin, Selank produces a stabilizing effect on mood. It is not euphoric or numbing. Users describe it as feeling "more even," with fewer emotional swings throughout the day.
Side Effects & Safety
Common (generally mild): - Nasal irritation or mild discomfort (intranasal administration) - Light headache, usually during initial days - Mild fatigue in some users (paradoxical; rare) - Slight nasal congestion
Less Common: - Emotional flatness at very high doses (reduce dose if this occurs) - Mild dizziness - Vivid dreams - Slight appetite changes
Contraindications: - Pregnancy and breastfeeding (no safety data available) - Active autoimmune conditions (immune modulation could theoretically aggravate flares; consult a physician) - Known hypersensitivity to tuftsin or related peptides - Concurrent use of immunosuppressive medications (possible interaction)
Selank has an excellent safety record across clinical use in Russia. Side effects are rare and almost always mild. The absence of dependency, tolerance, and withdrawal makes it one of the safest anxiolytic compounds available.
Selank Dosage Protocols
| Protocol | Dose | Frequency | Duration |
|---|---|---|---|
| Standard Anxiolytic Protocol | 250-500 mcg/day intranasal | 1-2 drops per nostril, 1-2 times daily | 14-30 day cycles, then 2 weeks off |
| Cognitive-Anxiolytic Stack Protocol | 250-500 mcg/day Selank + 300-600 mcg/day Semax | Semax in the morning, Selank 30 minutes later or at midday | 10-20 day cycles matching Semax cycle length |
| Immune Support Protocol | 400-500 mcg/day intranasal | Once daily in the morning | 21-30 day cycle, repeat after 2 weeks off |
Standard Anxiolytic Protocol: Start at 250 mcg to assess response. Morning and early afternoon dosing works best. Avoid evening use if sleep is disrupted.
Cognitive-Anxiolytic Stack Protocol: The classic Russian combination. Semax handles focus and BDNF stimulation while Selank provides calm and emotional balance.
Immune Support Protocol: Used for periods of immune stress (travel, illness recovery, seasonal transitions). Monitor any autoimmune conditions closely.
These are general guidelines for research purposes. Always consult a healthcare professional before use.
Is Selank Right for You?
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Start the QuizStacking Selank
Complete nootropic stack: focus + calm
Semax 300-600 mcg intranasal first thing in the morning, followed by Selank 250-500 mcg intranasal 30 minutes later. Alternatively, take Semax in the morning and Selank in the early afternoon. Run both on the same 10-20 day cycle. This is the most well-established nootropic peptide combination available.
Neuroprotection + gut-brain axis support
Selank 250-500 mcg intranasal daily alongside BPC-157 250-500 mcg subcutaneous or oral. BPC-157 supports gut health and has its own neuroprotective properties via the gut-brain axis. Good for individuals dealing with anxiety linked to gut dysfunction or chronic inflammation.
Anti-aging + cognitive maintenance
Run Selank at 300-500 mcg/day during an Epitalon cycle (5-10 mg over 10-20 days). Selank provides ongoing cognitive and immune support while Epitalon addresses cellular aging through telomerase activation. Suitable for longevity-focused protocols.
Frequently Asked Questions
How quickly does Selank reduce anxiety?
Many users notice a calming effect within 15-30 minutes of intranasal administration. The full anxiolytic effect typically stabilizes after 3-5 days of consistent use. Unlike SSRIs, you do not need to wait weeks to feel a difference.
Is Selank addictive?
No. Selank does not bind to GABA-A receptors like benzodiazepines and does not produce dependency or withdrawal. Clinical studies have confirmed the absence of addictive properties. You can stop it abruptly without tapering.
Can I use Selank alongside SSRIs or benzodiazepines?
Selank does not have known dangerous interactions with SSRIs, but since it modulates serotonin metabolism, combining the two could theoretically produce additive effects. Consult your prescribing physician before combining. Some users successfully transition from benzodiazepines to Selank under medical guidance.
What is the difference between Selank and Semax?
Semax is primarily a cognitive stimulant (focus, BDNF, dopamine). Selank is primarily an anxiolytic (calm, GABA modulation, stress resilience). They were developed by the same lab and designed to complement each other. Most nootropic peptide users run both together.
Does Selank affect immune function?
Yes. As a tuftsin analogue, Selank retains immunomodulatory properties. It can enhance immunoglobulin production, normalize cytokine levels, and support natural killer cell activity. This makes it useful during periods of immune stress, but also means those with autoimmune conditions should use it cautiously.
Can I use Selank long-term?
Cycling is recommended (14-30 days on, 2 weeks off) to maintain optimal receptor sensitivity. While no tolerance has been observed in clinical studies, periodic breaks are standard practice with most peptides.
How should I store Selank nasal spray?
Refrigerate after reconstitution. Most Selank nasal spray solutions remain stable for 2-4 weeks when refrigerated. Lyophilized powder can be stored at room temperature but keeps longer in the fridge. Avoid freezing.
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References & Clinical Studies
- 1.Selank: a novel anxiolytic peptide with nootropic and immunomodulatory properties
- 2.Anxiolytic activity of the synthetic peptide Selank and its mechanism of action
- 3.Effect of Selank on the expression of genes encoding immune mediators
- 4.Selank modulates the expression of genes in the immune and nervous systems
- 5.The effects of Selank on anxiety-related behavior and monoamine metabolism in the brain
Medical Disclaimer
This content is for informational and educational purposes only. It is not intended as medical advice and should not replace consultation with a qualified healthcare professional. Peptides discussed here may be unapproved for human use in your jurisdiction. Always consult your doctor before starting any new supplement or peptide protocol.
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