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Also known as: TP-7
A synthetic anxiolytic and nootropic peptide derived from tuftsin, studied for anxiety, cognitive enhancement, and immune modulation..
Selank is a synthetic analog of the immunomodulatory peptide tuftsin (threonyl-lysyl-prolyl-arginine) with a Gly-Pro extension for stability. It modulates GABA-ergic and serotonergic neurotransmission, increases BDNF expression, stabilizes enkephalins (endogenous opioid peptides), and modulates IL-6 and T-helper cell balance. Produces anxiolytic effects comparable to benzodiazepines without sedation or dependence.
Selank is a synthetic analog of the immunomodulatory peptide tuftsin (threonyl-lysyl-prolyl-arginine) with a Gly-Pro extension for stability. It modulates GABA-ergic and serotonergic neurotransmission, increases BDNF expression, stabilizes enkephalins (endogenous opioid peptides), and modulates IL-6 and T-helper cell balance. Produces anxiolytic effects comparable to benzodiazepines without sedation or dependence.
A synthetic anxiolytic and nootropic peptide derived from tuftsin, studied for anxiety, cognitive enhancement, and immune modulation.
IUPAC Name
Thr-Lys-Pro-Arg-Pro-Gly-Pro
CAS Number
129843-05-03
Molecular Formula
C33H57N11O9
Molecular Mass
751.87 g/mol
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Known allergy to Selank or related peptides. Active autoimmune disorders. Pregnancy or breastfeeding. Concurrent benzodiazepine use (both affect GABA).
Research Disclaimer
This interaction data is compiled from published research and community reports. It may not be exhaustive. Always consult a healthcare professional before combining compounds.
$34.99
up to $45.00
$3.4990
4
4
vial
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Nasal delivery offers the fastest onset and highest bioavailability for many nootropics. We rank nasal peptides and sprays by absorption, onset speed, and real-world effectiveness.
4/1/2026How you take a nootropic matters as much as what you take. This guide breaks down capsules, nasal sprays, sublingual pouches, and transdermal delivery — with bioavailability data, onset times, and product picks for each method.
4/1/202688 PubMed studies
Data Completeness
100%COA Verification
10
Verified COAs
2
Vendors w/ COA
High verification rate (83%)
Latest test: 3/1/2026
Research Credibility
Well-researched compound
Half-Life
~2–3 minutes IV; intranasal bioavailability extends effective duration to several hours
Molecular Weight
751.87 g/mol
Administration
Intranasal, Subcutaneous
CAS Number
129843-05-03
Trial Phase
Approved (Russia)
Research Disclaimer
This information is for educational and research purposes only. Not intended as medical advice. Consult a healthcare professional before use.
A synthetic anxiolytic and nootropic peptide derived from tuftsin, studied for anxiety, cognitive enhancement, and immune modulation.
Selank is available in vial form.
Prices start at $34.99 across 4 verified vendors.
Compare prices, payment methods, shipping, and COA scores across 4 vendors.
Nootropics
9-Methyl-β-carboline (9-MBC) is a synthetic β-carboline alkaloid that has gained significant interest in the nootropic community for its reported ability to promote dopaminergic neuron growth, increase dopamine synthesis enzymes, and provide neuroprotective effects against neurotoxins.
Nootropics
Alpha-GPC (L-alpha glycerylphosphorylcholine) is a choline-containing phospholipid naturally present in the brain and found in small amounts in dairy and meat.
Nootropics
Bromantane (Ladasten) is an atypical psychostimulant and anxiolytic developed in Russia, approved there for asthenia.
Nootropics
CDP-Choline (cytidine diphosphocholine, citicoline) is a naturally occurring nucleotide found in every cell in the body, and one of the most evidence-backed nootropics available.
Nootropics
Dihexa is a synthetic peptide analogue of the angiotensin IV metabolite LVV-hemorphin-7, developed at Washington State University.
Nootropics
Lion's Mane (Hericium erinaceus) is a medicinal mushroom with a growing body of clinical evidence for cognitive enhancement, neurogenesis, and nerve repair.