2-peptide research blend in one vial: SELANK + SEMAX. A cognitive research stack pairing Selank (an anxiolytic regulatory peptide) with Semax (a nootropic, neuroprotective peptide) — two Russian-developed peptides combined to pair calm with focus.
Also known as: Selank/Semax stack
A blend has one whole-vial purity, but the number that decides what you're holding is the net content of each component — an HPLC run resolves a separate peak for each. So we verify Brain Blend component by component. Each links to its own compound page, where its full independent testing lives.
| Component | Typical mg | Role in the blend | Verified purity | |
|---|---|---|---|---|
| SELANK | varies | Anxiolytic tuftsin-analog — stress and anxiety modulation | 99.6% · 323 tests | View testing → |
| SEMAX | varies | Nootropic ACTH(4-10)-analog — focus, memory, neuroprotection | 99.4% · 300 tests | View testing → |
Composition varies by vendor. The components above are consistent across shops, but the milligrams and ratio are not — always dose by the individual component amounts printed on your vial, never by a generic “blend dose.”
A blend is the single hardest product to trust — the whole-vial purity tells you the material is clean, but not whether every peptide is present in the right amount. Two questions decide that, and both are answerable in a lab.
Mass spec (or a clean HPLC peak per compound) confirms each peptide is in the vial — not one short, not a cheaper substitute standing in for the expensive one.
Tested milligrams vs. labelled milligrams, per component. This is where blends fail quietly — one component underdosed to pad margin while the vial still “contains” everything.
Tests run on a Brain Blend vial as sold — broken down per component. This is the data no shop and no competitor publishes.
Brain Blend is new to the library. Have a COA for a Brain Blend vial? Add it — every submission maps back to the 2 component compounds automatically.
Submit a Brain Blend lab testUntil more Brain Blend vials are tested, the strongest signal is how each component performs in single-compound testing across the shops we track. Tap any card for its full data.
Last Updated: August 2026
Last Updated: August 2026
The Brain Blend pairs Selank (a synthetic tuftsin-analog peptide studied for anxiolytic effects) with Semax (a synthetic ACTH(4-10)-analog peptide studied for nootropic and neuroprotective effects). Both were developed in Russia (and are used clinically there), but neither is FDA-approved, and the combination is not an approved product.
The pairing logic is complementary: Semax is oriented toward focus, memory, and neuroprotection (with reported BDNF-related effects), while Selank is oriented toward reducing anxiety and stress — so combined, the stack aims to pair cognitive enhancement with a calming effect, a "focus without jitter" rationale. This is a mechanistic rationale, not a proven combined outcome. For how the two peptides differ in mechanism, evidence and status, see Semax vs Selank.
Selank and Semax each have a primarily Russian clinical and preclinical evidence base and are used there, but they are not FDA/EMA-approved, and the combination has not been validated in controlled Western trials as of August 2026. See each component's profile. Always dose by the individual component amounts printed on your vial, never by a generic "blend dose" — and because the milligrams and ratio vary by vendor, re-check them for every batch. Evidence level: Component-level (largely Russian); blend not independently validated.
Confirm each labeled component is present, correctly identified, and adequately pure via HPLC and mass-spec. Peptigrity collects independent third-party Certificates of Analysis for the Selank and Semax components from shops' official channels and verifies each for authenticity before publishing; because shops choose which COAs to publish, results reflect the batches shops have made public rather than every production batch — a selection bias we state openly, and a community-funded Testing Grant to purchase and test vials anonymously is in development. The trust score weights lab purity and reviews equally (50/50). Tests in the database come from independent labs such as Janoshik Analytical, Freedom Diagnostics, and Chromate. See how to read lab results.
Educational information only; not medical advice. Selank and Semax are not FDA-approved, and this blend is not an approved therapy. Consult a qualified healthcare provider. Peptigrity does not sell, endorse, or recommend products or vendors.
In a blend you can only set the dose of one component — the rest follow the fixed ratio. Our calculator does that math so you don't underdose the peptide you actually care about.
Enter each component's milligrams and your BAC water — get per-component units for one syringe draw.
Open the blend calculator →How much bacteriostatic water, mixing without shaking, storage, and shelf life once mixed.
Read the reconstitution guide →It's a cognitive research stack pairing a nootropic peptide (Semax) with an anxiolytic peptide (Selank) — focus plus calm.
No — they're used in Russia but are not FDA/EMA-approved, and the combination isn't an approved product.
No — each has its own (largely Russian) evidence, but the blend isn't independently validated.
No. Peptigrity is an independent review platform, not a medical authority.