What Is Selank?

Selank (TP-7) is a heptapeptide with the amino acid sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro. It was designed as a stabilized analogue of tuftsin, a tetrapeptide fragment of immunoglobulin G that plays a role in immune function. By adding a Pro-Gly-Pro sequence to tuftsin, Russian scientists created a compound with enhanced stability and additional neurotropic properties.

Selank has been approved in Russia as a prescription medication for generalized anxiety disorder (GAD) and is administered as a nasal spray. In the research community worldwide, it continues to attract attention for its dual anxiolytic and cognitive-enhancing effects without the typical drawbacks of benzodiazepines or SSRIs.

Selank exerts its effects through several interconnected pathways:

• GABAergic modulation — Selank influences GABA receptor activity, enhancing inhibitory neurotransmission in a manner that reduces anxiety without heavy sedation.
• Serotonin and dopamine regulation — Research indicates Selank modulates the metabolism of serotonin and its metabolites in the brain, contributing to mood stabilization and anxiolytic effects.
• BDNF expression — Studies show Selank upregulates brain-derived neurotrophic factor (BDNF), a protein critical for neuronal survival, synaptic plasticity, and memory formation.
• Immune modulation — As a tuftsin derivative, Selank enhances natural killer cell activity and modulates cytokine expression, particularly IL-6 and interferon levels.
• Enkephalin stabilization — Selank inhibits enzymes that degrade enkephalins, endogenous opioid peptides involved in stress response and mood regulation.

This multi-target mechanism distinguishes Selank from single-pathway anxiolytics and may explain its broad-spectrum effects on both cognition and emotional well-being.

Preclinical and clinical research has identified several potential benefits of Selank:

• Anxiety reduction — Clinical trials in Russia demonstrated significant anxiolytic effects comparable to benzodiazepines, but without sedation, cognitive impairment, or withdrawal symptoms.
• Cognitive enhancement — Animal studies show improved memory consolidation and learning, likely mediated through BDNF upregulation and serotonergic modulation.
• Immune support — Selank has been shown to stimulate the release of interferons and modulate inflammatory cytokines, suggesting antiviral and immunoregulatory potential.
• Neuroprotection — By enhancing BDNF and stabilizing enkephalins, Selank may protect neurons against oxidative stress and excitotoxicity.
• Stress resilience — Research subjects exposed to stress showed improved adaptive responses and reduced corticosterone levels following Selank administration.

In clinical settings, Selank is most commonly administered intranasally. Typical research protocols include:

• Intranasal — 200–400 mcg per day, divided into 2–3 administrations. This is the most studied route and provides rapid absorption through the nasal mucosa.
• Subcutaneous injection — 250–500 mcg per day, typically once daily. This route offers more precise dosing for controlled research.
• Cycle duration — Research protocols typically run 14–21 days, followed by an equal off period.

Selank has a relatively short half-life of several minutes in its active form, though its neurotropic effects persist for hours due to downstream signaling cascades. Reconstituted Selank should be stored refrigerated at 2–8°C and used within 30 days.

Selank is generally well-tolerated in research, with a favorable safety profile compared to traditional anxiolytics:

• No sedation — Unlike benzodiazepines, Selank does not impair alertness or motor coordination.
• No dependence — Studies have not identified tolerance development or withdrawal symptoms.
• Mild nasal irritation — Some subjects report transient irritation at the intranasal application site.
• Rare allergic reactions — As with any peptide, hypersensitivity reactions are possible though uncommon.

Selank is sold for research purposes only and is not approved by the FDA for human use in the United States. Researchers should comply with all applicable regulations. This content is for informational purposes only and does not constitute medical advice.

Sourcing high-purity Selank is essential for reliable research results. Key factors when selecting a vendor include:

• Third-party testing — Insist on batch-specific certificates of analysis (COAs) from independent laboratories confirming ≥98% purity via HPLC.
• Proper storage and shipping — Peptides should be shipped lyophilized with cold packs to prevent degradation.
• Reputation — Check community forums and reviews for consistent positive feedback.

Ascension Peptides is our top recommended source for Selank in 2026. They provide 99%+ purity verified by independent labs, batch-specific COAs, fast US-based shipping (2–3 business days), and responsive customer support. Their Selank is supplied in lyophilized form with full documentation for research use.