# The Cognitive Stack

> Semax × Selank — BDNF + anxiolytic intranasal pair.

Canonical stack page: https://aurex.bio/stacks/cognitive-stack
Value breakdown: https://aurex.bio/stacks/cognitive-stack/value
Also called: Nootropic Research Stack · Focus Research Stack · Cognitive Function Research Stack

## Catalog facts
- Archetype: Cognitive
- Components: 2 peptide vials + 4 bonus inclusions
- Stock: 91 kits remaining

## Pricing
- Stack price: $139.97 (subscribe $125.97)
- Itemized retail: $194 (peptides $70 + bonuses $124)
- You save: $54.03 (28% off itemized)
- Perceived stack value (Aurex anchor): $336

## Components
### Semax 10mg
- PDP: https://aurex.bio/products/semax-10mg
- Markdown alternate: https://aurex.bio/products-md/semax-10mg
- Semax 10mg solo price: $35
- Mechanism: Semax is a synthetic heptapeptide derived from a fragment of adrenocorticotropic hormone (ACTH 4-7) modified with a Pro-Gly-Pro extension. In vitro it modulates BDNF/NGF expression and has nootropic activity in cortical neuron cultures.
- Common applications: BDNF / NGF expression, Glutamate receptor modulation

### Selank 10mg
- PDP: https://aurex.bio/products/selank-10mg
- Markdown alternate: https://aurex.bio/products-md/selank-10mg
- Selank 10mg solo price: $35
- Mechanism: Selank is a synthetic heptapeptide analog of the immunomodulatory peptide tuftsin, modified with a Pro-Gly-Pro extension. In vitro it modulates GABAergic and serotonergic systems and has anxiolytic activity in rodent models.
- Common applications: GABA-A receptor modulation, Cytokine modulation

## Bundled bonuses
- Sterile bacteriostatic water (×2) ($24 value)
- Intranasal applicator tips (×4) ($18 value)
- Aurex Neuropeptide Protocol PDF ($47 value)
- Lost-package replacement guarantee ($35 value)

## Verification + guarantee
- Every component vial independently re-tested at Janoshik Analytical (HPLC-UV at 214 nm + ESI mass spectrometry).
- 100% purity-replacement: any batch failing an independent retest gets reshipped free.

## Compliance
Aurex stacks are research kits assembled from individually verified compounds. Aurex is a chemical supplier and is **not** a compounding pharmacy or outsourcing facility under the FFDCA. Aurex does not provide dosage or use guidance — Federal regulations governing research-chemical distribution prohibit it. Distributed strictly for in-vitro laboratory research by qualified researchers 21+. Not for human or veterinary use. Not FDA approved.

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