≥99% PURITY GUARANTEEDTHIRD-PARTY TESTEDSAME-DAY SHIPPING USAFREE SHIPPING $200+

Buy Selank in the USA

Synthetic anxiolytic peptide derived from tuftsin, researched for cognitive and immunomodulatory effects.

≥99% HPLC + MS purityThird-party COA (Janoshik Analytical)Same-day NY shipping

Available sizes — Selank

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Why buy Selank from BioInfinity Lab

Every Selank lot we ship is validated by Janoshik Analytical via HPLC and mass spectrometry. The corresponding Certificate of Analysis is referenced from the product page so researchers can verify the exact batch they received. We do not ship without an in-hand COA.

Orders placed before 2 PM ET ship the same day from our New York research-supply facility. Free shipping is included on orders over $200, and every order includes batch-specific COA documentation.

About Selank

Selank is a synthetic heptapeptide developed by combining the tuftsin sequence (Thr-Lys-Pro-Arg) with a stabilizing Pro-Gly-Pro C-terminal tripeptide. Like Semax, it was developed at the Institute of Molecular Genetics in Russia and has been extensively studied for its anxiolytic and nootropic properties.

Research indicates Selank may modulate the expression of brain-derived neurotrophic factor (BDNF) and influence GABAergic neurotransmission without causing sedation or dependence commonly associated with traditional anxiolytics. Studies have examined its potential effects on anxiety-related behaviors, cognitive performance, and immune function.

Selank has also been investigated for its immunomodulatory properties, with research suggesting it may influence cytokine balance and immune cell activity. Its dual action on both neurological and immunological systems makes it a unique research compound.

Researchers should refer to peer-reviewed publications for primary sources on this compound. Selank is sold strictly for laboratory research use and is not intended for human or veterinary use.

Storage and handling

Lyophilized Selank stores at −20 °C protected from light. After reconstitution with bacteriostatic water per your laboratory's SOP, refrigerate at 2–8 °C and reference your lot's COA for any compound-specific guidance.

Same-day USA shipping

BioInfinity Lab ships Selank same-day from New York for all orders placed before 2 PM ET, Monday through Friday. We use insulated cold-shipping where indicated. International researchers should review our /shipping page for region-specific guidance.

Order Selank from BioInfinity Lab

Same-day shipping from New York, ≥99% HPLC-verified purity, and a third-party COA on every lot.

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For laboratory research use only. Not for human or veterinary use.