Anxiolytic Nootropic Peptide

Selank

Thr-Lys-Pro-Arg-Pro-Gly-Pro • TP-7 Heptapeptide

Selank is a synthetic seven-amino-acid analog of the immune peptide tuftsin, studied for anxiety reduction, cognitive support, mood regulation, stress resilience, and GABA-related signaling without the sedation associated with conventional benzodiazepines.

Anxiety Support Cognitive Support Mood & Stress Stress Resilience

Protocol Snapshot

Quick reference before the deep dive

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Intranasal Dose

200–400mcg

Per administration, typically 2–3 times daily.

Daily Total

400mcg–1.2mg

Based on the intranasal range shown above.

Cycle Length

10–14 Days

Some community protocols extend to 4–6 weeks.

Primary Route

Intranasal

Subcutaneous use is community-derived.

Peptide Grade

GradeB

Small comparative human studies support an anxiolytic signal without typical benzodiazepine sedation. Regional literature, limited replication, and sparse long-term safety data remain the main constraints.

Research Community Safety

Foundation

Research context, mechanisms, and practical use cases

What Is Selank?

Selank is a synthetic heptapeptide composed of seven amino acids: Thr-Lys-Pro-Arg-Pro-Gly-Pro. It was developed from tuftsin, a naturally occurring fragment of immunoglobulin G involved in immune regulation. Researchers added the Pro-Gly-Pro sequence to improve metabolic stability and create a peptide capable of producing central nervous system effects.

Selank was developed at the Institute of Molecular Genetics in Russia and is primarily described as an anxiolytic peptide with secondary nootropic and immunomodulatory research interest.

Unlike benzodiazepines, Selank is not designed to broadly suppress central nervous system activity. Research instead points to possible modulation of GABA-related signaling, enkephalin breakdown, monoamine pathways, neurotrophic signaling, and stress-related immune activity.

Selank Benefits

Selank has more human research than many experimental peptides, but most clinical work comes from Russian studies that have not been broadly replicated in large Western trials.

Anxiety Reduction

Small comparative human studies reported anxiety improvement with less sedation and cognitive impairment than the benzodiazepine comparators used in those trials.

Cognitive Support

Attention, working memory, verbal fluency, and mental clarity are recurring research and community themes, although much of the mechanistic support is preclinical.

Calm Without Heavy Sedation

Clinical and community reports commonly describe reduced tension without the pronounced drowsiness or cognitive dulling associated with many conventional anxiolytics.

Stress Resilience

Preclinical and limited human work suggests regulation of stress-related cytokines, including IL-1β, IL-6, TNF-α, and IL-4.

BDNF & Neuroplasticity

Animal studies found changes in BDNF expression in the hippocampus and prefrontal cortex, offering a possible explanation for learning and memory effects.

Low Dependence Potential

Short published studies have not shown the tolerance, physical dependence, or withdrawal pattern associated with benzodiazepines, but they do not establish long-term risk.

Protocol Planning

Dosing, cycling, and preparation

Selank Dosing Protocol

Intranasal dosing has human clinical precedent. Subcutaneous protocols are community and practitioner-derived because no published human dose-finding study has established an injectable protocol.

Intranasal Protocol

Dose

200–400mcg per administration

Frequency

2–3 times daily

Daily Total

400mcg–1.2mg daily

Timing

Morning and early afternoon

Cycle

10–14 days; some community protocols extend to 4–6 weeks

Subcutaneous Protocol

Dose

100–300mcg once daily

Timing

Morning preferred

Cycle

4–6 weeks

Break

1–3 weeks between cycles

Taper

No taper is generally considered necessary

Published Clinical Dose

A reported generalized-anxiety study regimen used 2.7mg daily intranasally, divided as 900mcg three times daily. Separate Russian 0.15% nasal-drop protocols have also been described as 2–3 drops per nostril three times daily for 10–14 days.

Selank Reconstitution

The following examples use a 10mg vial.

10mg Vial

Vial Size

10mg

BAC Water

2mL

Concentration

5mg/mL

100mcg

2 units on a U-100 syringe

300mcg

6 units on a U-100 syringe

Storage

Refrigerate after reconstitution

Reconstitution Calculator

Intranasal Preparation

Diluent

Sterile, preservative-free 0.9% sodium chloride

Final Mixture

10mg brought to 5mL total volume

Device

Metered bottle verified to deliver 0.1mL per spray

Per Spray

200mcg

Bottle Yield

Approximately 50 sprays

Storage

Refrigerate and follow supplier or pharmacy beyond-use guidance

DIY Nasal Prep Essentials

Useful supplies for intranasal Selank prep

0.9% Sterile Saline AmpoulesPreservative-free single-use saline for nasal-prep workflows. Metered Nasal Spray BottlesUse bottles with known spray output when calculating mcg per spray. 3mL Transfer SyringesUseful for moving measured saline volumes during preparation. 70% Isopropyl AlcoholFor prep-area cleanup and clean handling around materials.

Anecdotal Data Points

Community-reported outcomes and recurring patterns

Self-reported anecdotal experiences aggregated from public & private peptide community discussions and anonymous peptideprotocols.app user reports. This information does not carry the same weight as published research.

Positive Reports

The most consistent report is reduced background anxiety without sedation or a “medicated” feeling.
Some users report calmer social interactions and reduced physical tension, restlessness, or racing-heart sensations.
Improved verbal fluency, working memory, focus, and easier word recall are commonly described.
Effects are often described as subtle and natural rather than strongly sedating or stimulating.

Negative Reports

Some users report no noticeable effect, especially with inconsistent or low-quality nasal products.
Results appear less consistent for severe panic disorder or severe social anxiety than for generalized or situational anxiety.
Headache, nasal irritation, fatigue, dizziness, restlessness, or sleep disruption are occasionally reported.
Perceived onset varies widely: some users notice effects within 10–20 minutes, while others report only a gradual shift over one to two weeks.
Late dosing can make it harder for some users to wind down, so morning and early-afternoon use is often preferred.

Stacking & Synergy

Potential Selank pairings and tracking context

Relevant Combinations

Selank + Semax

The most common pairing. Selank provides a calming baseline while Semax is used for focus and cognitive drive. A human fMRI study found both affected amygdala-temporal connectivity, but no dosing trial has validated the stack.

Selank + BPC-157

These are sometimes combined for separate anxiety, gut, and tissue-repair goals. No published evidence establishes synergy.

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Track in Journal

Track Selank with the markers that matter most for this compound.

Baseline anxiety and physical tension.
Focus, verbal recall, and mental clarity.
Mood, sleep, and nasal irritation.

Start Tracking

Common Questions

Practical Selank answers

How much is one nasal spray?

With a 10mg vial brought to 5mL total volume in a verified 0.1mL sprayer, one spray contains 200mcg.

How is Selank different from Semax?

Selank is usually chosen for a calmer anxiolytic profile; Semax is more often positioned around attention, drive, and cognitive performance.

Is subcutaneous dosing clinically established?

No. Published human use is primarily intranasal, while injectable protocols are community- and practitioner-derived.

How quickly are effects noticed?

Reports vary from same-day subtle effects to a gradual baseline change over one to two weeks, and some users report no noticeable response.

Safety Notes

Side effects, interactions, and precautions

Selank Side Effects

Selank has generally been described as well tolerated in short Russian clinical studies, but modern long-term safety, reproductive safety, and interaction data remain limited.

Selank affects GABA-related, serotonergic, dopaminergic, enkephalin, and immune pathways. Combining it with psychiatric medication, alcohol, or central nervous system depressants may produce effects that have not been adequately studied.

In Published Research

Short clinical studies did not identify the sedation, memory impairment, tolerance, or withdrawal pattern typical of benzodiazepines.
Long-term, reproductive, and formal interaction data remain limited.
Most human data comes from relatively small Russian studies.

What Users Report

Common: temporary nasal irritation, unusual taste, headache, or mild fatigue.
Less common: dizziness, restlessness, nausea, vivid dreams, or difficulty winding down when taken late.
Injection users may experience redness, tenderness, swelling, or bruising at the site.

Selank Precautions

Major Precautions

Avoid use with known hypersensitivity to Selank, tuftsin-related peptides, or formulation ingredients.
Pregnancy and breastfeeding have not been adequately studied.
Selank is not a substitute for urgent care during an acute psychiatric crisis, mania, psychosis, suicidal thoughts, or severe uncontrolled panic.

Use Caution With

Benzodiazepines or other GABAergic medications.
SSRIs, SNRIs, MAO inhibitors, tricyclic antidepressants, stimulants, or other psychiatric drugs.
Alcohol, sedatives, sleep medications, or other central nervous system depressants.
Autoimmune disease, immunosuppressive therapy, or significant immune dysfunction; the relevance of Selank's preclinical immunomodulatory activity is uncertain.
Use under age 18 because pediatric safety data is limited.

Drug Interactions

No comprehensive human interaction program has been conducted. Benzodiazepine combinations have been studied only in controlled clinical settings, and evidence for serotonergic or other psychiatric-medication combinations remains limited.

Monitoring

No standard laboratory-monitoring protocol exists. Track anxiety severity, mood, sleep, cognition, nasal irritation, and any unexpected behavioral changes.

Regulatory Status

Selank is not FDA approved in the United States. Its human literature and prescription-product history are centered largely in Russia, which limits how broadly the evidence can be generalized.

FINAL VERDICT

Peptide Protocol's Opinionated Opinion

This is not medical advice. This editorial is our own opinion piece based off the experience of our own lab rats.

Selank is a decent compound for anxiety reduction, focus, and calm mental performance without sedation. Clean nootropic effects that support both physical athletic training and day jobs with high-cognitive demands. Reliable, well-tolerated daily option with consistent positive feedback.

Stacks very well with Semax. Semax handles the cognitive side through BDNF and dopamine, while Selank is the anxiolytic counterpart, taking the edge off any overstimulation Semax can cause for some people. Run them together on the same 10 to 14 day cycle, both intranasal, mornings and early afternoon. We see others including ourselves get better results stacking them than running either alone. We have not seen major downsides reported, which makes it an easy daily addition for mental clarity and stress management.