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% · 280 tests | View testing → |
| SEMAX | varies | Nootropic ACTH(4-10)-analog — focus, memory, neuroprotection | 99.4% · 268 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: July 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.
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. See each component's profile. 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 buys anonymously, tests at independent ISO-accredited labs, and publishes the unedited COA; the trust score weights lab purity and reviews equally (50/50). 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.