Nootropic Peptides

Educational reference only — not medical advice. Compounds with no UK marketing authorisation and no other lawful UK use (for example as a food supplement or cosmetic ingredient) are not for human consumption; this describes UK status only.

Mechanism tag

Oral-active peptides

Peptides or peptidomimetics that survive gastrointestinal proteolysis and reach the CNS via oral administration.

Neurogenesis

Dihexa

An orally active hexapeptide derivative of angiotensin IV, characterised in academic research as among the most potent known pro-cognitive compounds in animal models.

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Cognitive Enhancement

Noopept (Peptide Note)

A small proline-containing dipeptide derivative — technically a peptidomimetic — developed in Russia as an orally active cognitive enhancer with structural lineage to piracetam.

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Cognitive Enhancement

Cycloprolylglycine

An endogenous cyclic dipeptide that is also the primary active metabolite of Noopept, with intrinsic anxiolytic and cognitive effects independent of its parent compound — a research peptide in its own right.

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Neuroprotection

Semaglutide

A long-acting GLP-1 receptor agonist licensed for type-2 diabetes and obesity, with Phase III Alzheimer's disease trials (EVOKE and EVOKE Plus) that did not show slowed clinical progression (Lancet, 2026).

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Cognitive Enhancement

DDAVP (Desmopressin)

A licensed synthetic vasopressin analogue with documented memory-modulation effects — one of the classical vasopressin-family cognitive research peptides with the deepest historical literature.

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Neuroprotection

KPV

The α-MSH 11-13 tripeptide fragment (Lys-Pro-Val) with anti-inflammatory activity mediated through melanocortin-receptor-adjacent mechanisms — studied for gut, skin, and emerging neuroinflammation research applications.

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Neuroprotection

Carnosine

An endogenous dipeptide (β-alanyl-L-histidine) with distinctive antioxidant, anti-glycation, and metal-chelating properties supporting cellular-protection research applications spanning neuroprotection, cognitive-ageing, and metabolic-cognitive contexts.

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