🧠 Category

Cognitive & Nootropic Peptides

Neuropeptides researched for memory, focus, neuroprotection, and mood — several developed in Eastern European clinical settings.

Cognitive and nootropic peptides are studied for memory, focus, mood, and neuroprotection. A striking feature of this category is its geography: many of the best-known compounds — Semax, Selank, Cerebrolysin, Noopept, Cortexin — were developed and are used clinically in Russia and neighboring countries, but have limited independent Western clinical evidence.

Others, like dihexa and the CNTF-derived P21, are potent in animal models of cognition but have never been tested in humans. Davunetide is an instructive exception — it reached large Western trials for a tauopathy and did not work. Across the category, treat dramatic cognitive claims with caution: the gap between Russian clinical practice, preclinical potency, and proven Western efficacy is wide.

The peptide Neuropeptide Acts on Brain receptors&neurotrophins Triggers BDNF /neuroprotectivesignals Outcome Memory & focuseffects (studied)
Simplified mechanism: how cognitive peptides are generally studied to act. Individual peptides vary — see each guide.

Cognitive & Nootropic peptides we cover (11)

Cognitive

Semax

A neuropeptide developed in Russia (related to ACTH(4-10)) and used there clinically, studied for cognition, neuroprotection, and stroke recovery.

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Cognitive

Selank

A synthetic peptide based on the immune fragment tuftsin, developed in Russia as an anxiolytic and studied for anxiety, mood, and cognition.

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Cognitive

Cerebrolysin

A peptide preparation derived from pig brain tissue, used in several countries for stroke, traumatic brain injury, and dementia — with a mixed and debated evidence base.

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Cognitive

Dihexa

N-hexanoic-Tyr-Ile-(6) aminohexanoic amide

A small peptide derived from angiotensin IV, studied in animal models for promoting new synapse formation and cognitive enhancement, with potency attributed to the HGF/c-Met system.

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Cognitive

DSIP

Delta Sleep-Inducing Peptide

A naturally occurring neuropeptide named for early reports of sleep-promoting effects, studied for sleep, stress resilience, and pain — but still poorly characterized.

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Sexual HealthCognitive

Oxytocin

Pitocin (injectable)

A natural hormone and neuropeptide central to bonding, birth, and lactation — FDA-approved for obstetric use (as Pitocin) and widely researched (often intranasally) for social and emotional behavior.

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Cognitive

P21

P021 (CNTF-derived peptidergic compound)

A small neurotrophic compound derived from a region of ciliary neurotrophic factor (CNTF), studied in animal models for promoting neurogenesis and protecting against neurodegeneration.

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Cognitive

Cortexin

A polypeptide preparation extracted from animal cerebral cortex, used in Russia and nearby countries for stroke, brain injury, and cognitive conditions.

Read the guide →
CognitiveAnti-Aging

Pinealon

Glu-Asp-Arg (peptide bioregulator)

A short “peptide bioregulator” (Glu-Asp-Arg) from the Khavinson research line, studied for brain function, neuroprotection, and age-related decline.

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Cognitive

Davunetide

NAP, NAPVSIPQ

A short neuroprotective peptide derived from activity-dependent neuroprotective protein (ADNP), studied for tau-related neurodegeneration and cognition.

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Cognitive

Noopept

GVS-111, Omberacetam

A proline-containing dipeptide nootropic developed in Russia, studied for memory, neuroprotection, and mild cognitive complaints — and used there clinically.

Read the guide →
Not medical advice. The Peptide Almanac summarizes published research for education only. Full disclaimer →

Frequently asked questions

Do nootropic peptides like Semax and Selank work?

They are used clinically in Russia and have supportive Russian studies, but large independent Western trials are lacking, so their cognitive benefits are not well established by international standards. None is FDA-approved.

Are cognitive peptides approved in the US?

No. Compounds such as Semax, Selank, Cerebrolysin, Noopept and Cortexin are not FDA-approved. They are used as medicines in some countries but are sold elsewhere as research chemicals or supplements of uncertain legal standing.

How are these peptides usually taken?

Several (like Semax and Selank) are formulated as intranasal solutions because they would be broken down if swallowed, while Noopept is reported to be orally active. We do not publish dosing protocols — these are matters for qualified medical guidance.

Educational content only — not medical advice. See our Privacy Policy.