Selank is a synthetic peptide that people use to feel calmer and think more clearly without the drowsiness or dependency issues you'd get from traditional anxiety medications. Think of it as a gentle mental optimizer that helps your brain function better under stress while keeping you alert and focused.
When you take Selank, it works like a skilled conductor orchestrating your brain's natural calming systems. Your body already produces its own anxiety-relieving compounds called enkephalins, but they usually break down quickly. Selank blocks the enzymes that destroy these natural mood stabilizers, so they stick around longer and keep working to calm your nerves. It's like putting a protective shield around your body's built-in stress relief team.
At the same time, Selank encourages your brain to produce more BDNF, which is essentially fertilizer for your brain cells. This helps your neurons grow stronger connections and communicate more efficiently, which is why people often feel mentally sharper when using it. The peptide also fine-tunes your brain's chemical balance by adjusting how your neurons use GABA and serotonin – two key messengers that control mood and relaxation. Rather than forcing dramatic changes, Selank gently nudges your brain's existing systems to work more harmoniously together.
Dosage Information
Typical Dose
250-500 mcg
Frequency
2-3 times daily
Administration
Intranasal spray or subcutaneous injection
Half-Life
1–3 minutes
Notes
Intranasal delivery provides rapid CNS effects. Each nostril typically receives one spray. Effects are noticeable within 15-30 minutes. No tolerance or dependence has been observed in clinical studies.
Why this matters
Very short systemic half-life; nasal route bypasses first-pass metabolism for CNS delivery.
Protocol cycle
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Evidence Score
0.64
Compound Data
Molecular Formula
C33H57N11O9
Molecular Weight
751.90 g/mol
IUPAC Name
(2S)-1-[2-[[(2S)-1-[(2S)-2-[[(2S)-1-[(2S)-6-amino-2-[[(2S,3R)-2-amino-3-hydroxybutanoyl]amino]hexanoyl]pyrrolidine-2-carbonyl]amino]-5-(diaminomethylideneamino)pentanoyl]pyrrolidine-2-carbonyl]amino]acetyl]pyrrolidine-2-carboxylic acid
PubChem CID
11765600Potential Side Effects
Selank discussions
Stacking Compatibility
In These Stacks
Quick Facts
- Administration
- Intranasal spray or subcutaneous injection
- Typical Dose
- 250-500 mcg
- Frequency
- 2-3 times daily
- References
- 2 curated + 50 from PubMed
- Clinical Trials
- 10 registered
- Evidence Score
- 0.6 / 100
Frequently Asked Questions about Selank
What is Selank?
Selank is a synthetic heptapeptide analog of the naturally occurring immunomodulatory peptide tuftsin. Developed at the Institute of Molecular Genetics of the Russian Academy of Sciences, it is approved in Russia as an anxiolytic and nootropic. It offers cognitive enhancement and anxiety reduction without sedation or addiction potential.
How does Selank work?
Selank modulates the expression of brain-derived neurotrophic factor (BDNF) and influences the balance of Th1/Th2 cytokines. It inhibits enkephalinase enzymes, prolonging the activity of endogenous enkephalins (the body's natural anxiolytic peptides). It also modulates GABA neurotransmission, serotonin metabolism, and has documented effects on IL-6 and interferon expression.
What is the recommended dosage for Selank?
The typical dose is 250-500 mcg. 2-3 times daily. Administration: Intranasal spray or subcutaneous injection. Intranasal delivery provides rapid CNS effects. Each nostril typically receives one spray. Effects are noticeable within 15-30 minutes. No tolerance or dependence has been observed in clinical studies.
What are the side effects of Selank?
Nasal irritation. Mild fatigue. Headache (rare). Slight sedation at higher doses
What is the Selank cycle protocol?
Selank is typically cycled as needed. No tolerance or dependence observed clinically
Questions reflect common community inquiries. This is not medical advice.