Selank
Also known as: selank peptide, TP-7, tp7, tuftsin analogue
Synthetic tuftsin analogue studied for anxiolytic, nootropic, and immunomodulatory effects.
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Overview
Chemical compound
Selank is a nootropic anxiolytic peptide based drug developed by the Institute of Molecular Genetics of the Russian Academy of Sciences. Selank is a heptapeptide with the sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro (TKPRPGP). It is a synthetic analogue of the human tuftsin.
Mechanism of Action
Modulates BDNF expression, affects serotonin and dopamine systems, inhibits enkephalin-degrading enzymes.
What is Selank?
Selank is a synthetic seven-amino-acid peptide developed in Russia as a safer cousin of anti-anxiety drugs. Built from a fragment of the immune molecule tuftsin, researchers study it for its unusual trick: calming anxiety in laboratory and clinical studies as effectively as classic tranquilizers, but without sedation, memory fog, or withdrawal.
How It Works - Simply Explained
Selank calms the brain's alarm circuits through several routes at once. It boosts GABA - the brain's main calming signal - while also raising BDNF, which keeps mood-related brain regions resilient. At the same time it dials down inflammatory messengers like IL-6 that researchers increasingly link to anxious states. The result researchers describe: the edge comes off, but alertness and clear thinking stay fully online.
What Studies Have Found
Calm equal to tranquilizers, minus the sedation
In animal tests and Russian human trials for generalized anxiety disorder, Selank reduced anxiety as effectively as benzodiazepine drugs - yet caused no drowsiness, no muscle relaxation, and no dependence or withdrawal. That combination was unheard of: every classic anti-anxiety drug trades calm for sedation, but Selank refused the trade.
Zozulya AA and colleagues; Andreeva L et al., published Russian anxiolytic research on Selank
Growing resilience in the hippocampus
Researchers found that Selank increased BDNF messenger RNA in the hippocampus - the brain's memory-and-mood headquarters. This suggests Selank does not just mask anxiety symptoms but physically strengthens the brain circuits that regulate emotion, building resilience rather than just muting alarm bells.
Inozemtseva LS et al., 2008, published neurobiology research on Selank and BDNF expression
Cooling the inflammation-anxiety link
Selank turned out to be an immunomodulator as well as a calming agent: it shifted immune signaling genes and lowered pro-inflammatory messengers such as IL-6. This matters because scientists increasingly connect chronic low-grade inflammation to anxiety and low mood - meaning Selank may calm the brain partly by cooling the immune system.
Uchakina ON and colleagues, published immunopharmacology research on Selank cytokine modulation
Memories that stick
Beyond calming nerves, Selank improved learning and stabilized memory traces in animal studies - animals remembered what they learned better and longer. This calm-plus-sharp profile is rare in pharmacology and is a big reason researchers keep returning to Selank decades after its invention.
Semenova TP et al., published behavioral research on Selank and memory
Focus without the jitters
Unlike stimulant-based focus aids, Selank improved mental performance in studies without raising heart rate or causing agitation. Researchers describe a distinctive state: relaxed but alert, steady but sharp. It is this profile that made Selank the natural counterpart to its more stimulating sibling, Semax, in comparative studies.
Published comparative nootropic research on Selank and Semax
Last updated 2026-10-06. New findings are added as published research appears.
Frequently Asked Questions
What is Selank?
Selank is a synthetic heptapeptide (seven amino acids) developed in Russia, based on tuftsin - a natural immune-system molecule - with a stabilizing tail. It was designed as an anti-anxiety (anxiolytic) research compound. It is sold strictly for laboratory research use and is not approved for human consumption in the US.
How is Selank different from Semax?
They are sibling peptides from the same Russian research program. Selank leans calming: stronger anti-anxiety effects, immune modulation, relaxed alertness. Semax leans stimulating: sharper focus, stronger BDNF boost, stroke neuroprotection. Many researchers study them as a complementary pair for the full calm-plus-sharp spectrum.
What does research say about Selank and anxiety?
Animal studies and Russian clinical trials for generalized anxiety disorder found Selank reduced anxiety comparably to benzodiazepine drugs. The remarkable part: it did so without sedation, cognitive dulling, muscle relaxation, or withdrawal symptoms - the classic costs of tranquilizer therapy.
Does Selank cause drowsiness like anti-anxiety meds?
In published research, no. This is Selank's signature finding: anxiolytic effects without the sedation profile of benzodiazepines. Test animals and trial subjects stayed alert. That said, it is a research compound only, not an approved treatment for anxiety.
What is the BDNF connection?
Researchers found Selank increases BDNF gene activity in the hippocampus, a brain region central to mood and memory. BDNF supports neuron health and adaptability. The finding suggests Selank may strengthen emotional-regulation circuits rather than merely suppressing anxiety signals.
Has Selank been tested in humans?
Yes - in Russia, where clinical trials studied Selank for generalized anxiety disorder and related conditions. Like Semax, it has not been through Western FDA-style trials, so outside Russia it remains a research chemical for laboratory use only.
Is Selank approved in the US?
No. Selank is not FDA-approved and is not a prescription drug in the United States. It is available only as a research chemical for laboratory use.
Why is Selank called an immunomodulator too?
Because its parent molecule, tuftsin, is an immune-system signal - and Selank inherited that talent. Research shows it modulates cytokine gene expression, including lowering IL-6. Scientists now see anxiety and immunity as deeply connected, which makes Selank's dual action especially interesting to study.
What Researchers Are Saying
Community Reports - Not Medical Advice
The following is aggregated from public forums, Reddit, and research communities. These are anecdotal reports from researchers only - not verified clinical data and not a recommendation of any kind.
Selank (also known as selank peptide, TP-7) is studied within the cognitive function and neuroprotection research community. Synthetic tuftsin analogue studied for anxiolytic, nootropic, and immunomodulatory effects.
Last updated October 28, 2026
Research status: active. Selank appears across cognitive function and neuroprotection research forums and academic literature. Researchers note this compound falls in the cognitive category.
Last updated October 28, 2026
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