Support for sleep

SELANK 5MG + BAC WATER

SELANK — The Peptide of Balance, Calm, and Focus

SELANK is a synthetic octapeptide (Thr-Lys-Pro-Arg-Pro-Gly-Pro) and an analog of the natural neuropeptide tuftsine, a molecule involved in regulating both nervous system and immune functions.

It was developed at the Russian Academy of Sciences as a neuropeptide with anxiolytic, anti-stress, and nootropic properties, free from the dependency and sedation typical of conventional tranquilizers.

At the biological level, SELANK enhances the expression of BDNF (brain-derived neurotrophic factor) and modulates the balance of key neurotransmitters — serotonin, dopamine, and GABA.

This results in a stabilizing effect on the nervous system, improving mood, focus, and sleep quality while reducing emotional tension and stress-induced fatigue.

Safety data sheet Research

One time purchase

129,00 zł

1 PC
3 PCSSave 25%
5 PCSSave 30%

Product variants

Who Is It For?

Where SELANK™ Makes the Difference

Stress & Emotional Balance

Reduces nervous tension and strengthens your ability to cope with stress.

Helps maintain calm, clarity, and composure under pressure.

Focus & Cognitive Function

Supports memory, attention, and mental performance.

Enhances productivity and clear thinking throughout the day.

Immunity & Recovery

Strengthens the immune system and supports recovery from physical or emotional stress.

Promotes holistic balance, helping the body restore its natural stability.

SELANK EXERTS NEUROREGULATORY AND ANTI-STRESS EFFECTS THROUGH:

Modulation of serotonergic and dopaminergic systems — restores emotional balance and reduces tension and anxiety.
Upregulation of BDNF expression — supports neuroplasticity and neuronal regeneration.
Influence on GABA activity — provides natural calming without sedation or cognitive dulling.
Improved sleep and concentration — stabilizes circadian rhythm and promotes mental recovery.
Immunomodulatory action — enhances immune response and reduces inflammation.

💡 Effect: A calm, focused mind, deeper sleep, and enhanced psychological resilience to everyday stress.

PEPTIDE STRUCTURE — SELANK

Amino acid sequence: Thr-Lys-Pro-Arg-Pro-Gly-Pro
Molecular formula: C₃₃H₅₇N₁₁O₉
Molecular weight: 751.89 g/mol
Form: White lyophilized powder, water-soluble, and stable across a wide pH range

RESEARCH & BIOLOGICAL ACTIVITY

SELANK and the Nervous System / Mood Regulation

SELANK modulates dopaminergic and serotonergic activity, helping to stabilize mood and reduce hyperexcitability.

Clinical studies demonstrate that it alleviates anxiety and emotional tension while improving concentration and working memory.

SELANK and Sleep / Recovery

By influencing serotonin and melatonin synthesis, SELANK helps regulate the circadian rhythm.

It promotes faster sleep onset, deeper slow-wave sleep, and enhanced nighttime recovery — all without daytime drowsiness or dependence.

SELANK, Oxidative Stress, and Immunity

SELANK lowers levels of pro-inflammatory cytokines (notably IL-6), reducing oxidative stress and strengthening immune defense.

In vivo models confirm its anti-inflammatory and immunomodulatory effects — increasing resistance to infection and promoting overall homeostasis.

SELANK and Cognitive Performance

Through its action on neurotransmitters and neurotrophic factors, SELANK enhances memory, reaction speed, and mental clarity.

Clinical data show improved performance in cognitive tests and more efficient information processing under stress.

Property	Biological Effect
Serotonin & dopamine modulation	Reduced stress and emotional tension
Increased BDNF expression	Neuronal regeneration and improved mood
Circadian rhythm regulation	Better sleep and focus
Influence on GABA	Natural calm without sedation
Immunomodulatory activity	Enhanced immune function and systemic balance

This product is intended and labeled for research use only.

This labeling allows research chemicals to be used exclusively for in vitro studies and laboratory experiments. All product information on this page is for educational purposes only. Introducing this product into the human or animal body is strictly prohibited by law. This product should be handled only by licensed, qualified professionals. The product is not a drug, food, or cosmetic, and may not be mislabeled or misused as such.

Bibliography

T.Semenova, I.Kozlovskiĭ, N.Zakharova, M.Kozlovskaia, Comparison of the effects of Selank and tuftsin on the metabolism of serotonin in the brain of rats pretreated with PCPA. 2009;72(4):6-8.
No authors listed, Compensatory and antiamnestic effects of heptapeptide Selank in monkeys. 2008;44(3):284-90.
T.Kolomin, T.Agapova, V. Agniullin, S.Shram, M.Shadrina, P.Slominskiĭ, S. Limborskaia, I.Miasoedov, Transcriptome alteration in the hippocampus under the treatment of tuftsin analog Selank. 2013;63(3):365-74. DOI: 10.7868/s0044467713030052
F.Ershov, P.Uchakin, O.Uchakina, M.Mezentseva, L.Alekseeva, N.Miasoedov, Antiviral activity of immunomodulator Selank in experimental influenza infection. 2009;54(5):19-24.
L.Inozemtseva, E. Karpenko, O.Dolotov, N.Levitskaya, A.Kamensky, L. Andreeva, I.Grivennikov, Intranasal administration of the peptide Selank regulates BDNF expression in the rat hippocampus in vivo. 2008 421:241-3. doi: 10.1134/s0012496608040066.