Nootropic Peptides | Cognitive & Longevity Research Compounds

Nootropic and longevity research compounds from QSC span neurotrophic factor upregulation, GABAergic anxiolysis, synaptogenesis, NAD+ pathway modulation, and telomerase activation — covering the primary mechanistic targets in cognitive and longevity research. All compounds supplied at ≥99% purity with Janoshik COA.

Research Compounds in This Category

QSC supplies five cognitive and longevity research compounds, each targeting a distinct mechanistic node in neuroscience and longevity biology:

Mechanistic Landscape of Nootropic Research

The compounds in this category work through mechanistically distinct, non-overlapping pathways — allowing researchers to study different nodes of cognitive and longevity biology independently or in combination:

• Neurotrophic factor axis (BDNF/NGF): Semax and Selank both upregulate BDNF through different pathways (monoaminergic vs GABAergic), making them useful for comparative BDNF upregulation mechanistic studies.
• Synaptogenesis and memory consolidation: Dihexa activates HGF/c-MET signalling to promote dendritic spine formation — a distinct structural mechanism from neurotrophic factor upregulation.
• NAD+ and methylation biology: 5-Amino-1MQ inhibits NNMT, increasing NAD+ availability and altering the SAM/SAH methylation balance — relevant to both metabolic and cognitive research.
• Telomere biology and circadian regulation: Epitalon activates telomerase (hTERT) and interacts with pineal circadian regulation — the longevity research angle distinct from acute cognitive effects.

Research Guides

Frequently Asked Questions

What are nootropic peptides?

Nootropic peptides are short peptide sequences that modulate neurotransmitter systems, neurotrophic factor expression, or neuronal signalling pathways involved in cognitive function, neuroprotection, anxiety, and memory. Unlike synthetic small-molecule nootropics, peptide nootropics work through receptor-mediated mechanisms — binding to specific receptors or enzymes — with generally high selectivity. Semax and Selank are the most extensively researched peptide nootropics, both approved as nasal sprays in Russia.

What is the difference between Semax and Selank?

Semax is an ACTH(4-10) derivative that activates cognitive arousal via BDNF/NGF upregulation and monoaminergic modulation — it produces cognitive activation and neuroprotection. Selank is a tuftsin derivative that modulates GABA-A receptor activity and upregulates hippocampal BDNF — it produces anxiolysis without sedation. Their profiles are complementary: Semax activates, Selank calms. They are sometimes researched in combination to study cognitive enhancement with anxiolytic co-effect.

What is Dihexa and how does it work?

Dihexa is a synthetic peptide derived from angiotensin IV, designed to activate the hepatocyte growth factor (HGF) receptor c-MET. HGF/MET signalling promotes synaptogenesis and dendritic spine formation — the structural basis of long-term memory consolidation. In animal models, Dihexa has been reported as one of the most potent pro-cognitive compounds tested, 7 orders of magnitude more potent than BDNF in promoting synaptogenesis in some assays. It is used in research for neurodegeneration, memory deficit, and synaptogenesis mechanistic studies.

What is 5-Amino-1MQ?

5-Amino-1-methylquinolinium (5-Amino-1MQ) is a small molecule NNMT (nicotinamide N-methyltransferase) inhibitor. NNMT consumes SAM (S-adenosylmethionine) to methylate nicotinamide, reducing NAD+ precursor availability. Inhibiting NNMT increases NAD+ levels and alters the cellular methylation balance. Research applications include NAD+ pathway biology, adipogenesis suppression, metabolic reprogramming, and the metabolic-cognitive interface. It is not a peptide but is included in the QSC nootropic/longevity research catalog.