Cognitive & Nootropic

Delta Sleep-Inducing Peptide (DSIP) is a naturally occurring nonapeptide (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) with molecular weight 848.824 Da, first isolated from rabbit cerebral venous blood in 1974. It functions as a neuromodulatory peptide found in the hypothalamus, limbic system, pituitary, and peripheral organs, crossing the blood-brain barrier easily without enzymatic degradation. DSIP's primary mechanisms involve modulation of sleep architecture, neurotransmitter regulation (serotonin, dopamine, glutamate), stress response via the HPA axis, and potential interaction with NMDA receptors and adrenergic pathways. Clinical applications have focused on chronic insomnia, stress-related disorders, pain management, and substance withdrawal symptoms, though exact mechanisms remain incompletely characterized. Despite 50 years of research, DSIP is not FDA-approved or regulated by major health authorities worldwide, remaining available only as a research compound. It exists in an unregulated gray market, with most commercially available forms being research-grade material not intended for human use, and the FDA has flagged it for potential immunogenicity risks.

Selank is a synthetic heptapeptide anxiolytic and nootropic drug developed by the Institute of Molecular Genetics of the Russian Academy of Sciences. It is a synthetic analog of the immunomodulatory peptide tuftsin, consisting of the tuftsin sequence (Thr-Lys-Pro-Arg) elongated at the C-terminus with Pro-Gly-Pro for enhanced metabolic stability. Selank exhibits pronounced anxiolytic, nootropic, neuroprotective, and immunomodulatory activities through modulation of GABAergic, serotonergic, and dopaminergic neurotransmitter systems, along with regulation of brain-derived neurotrophic factor (BDNF) expression.

Semax is a synthetic heptapeptide analog of adrenocorticotropic hormone (ACTH), specifically derived from the ACTH(4-10) fragment, with the amino acid sequence Met-Glu-His-Phe-Pro-Gly-Pro. Developed in Russia, it exhibits pronounced nootropic, neuroprotective, and neurotrophic properties without hormonal activity. The peptide works through multiple mechanisms including modulation of brain-derived neurotrophic factor (BDNF) expression, enhancement of dopamine and serotonin levels, melanocortin receptor interaction, and anti-inflammatory effects. Research demonstrates efficacy in treating acute ischemic stroke, cognitive impairment, optic nerve diseases, and peptic ulcers. Clinical trials in Russia have shown improvements in neurological recovery, memory, attention, and neuroprotection. Semax is approved and marketed as a prescription medication in Russia and Eastern Europe, where it has been in clinical use since the 1990s. However, it has not been evaluated or approved by regulatory agencies in the United States, European Union, United Kingdom, or most other countries, where it is sold only as a research chemical.

Pinealon (EDR) is a synthetic tripeptide bioregulator composed of glutamic acid, aspartic acid, and arginine (Glu-Asp-Arg) developed by Russian scientist Vladimir Khavinson. Originally isolated from the polypeptide neuroprotective drug Cortexin, it demonstrates potent neuroprotective properties through multiple mechanisms including ROS suppression, gene expression regulation, and epigenetic modulation. Pinealon has been extensively studied in Russian scientific literature for its effects on cognitive function, neuroplasticity, and cellular aging processes.

N-Acetyl Selank is an enhanced synthetic heptapeptide derived from the endogenous immune peptide tuftsin, featuring acetylation for improved stability and bioavailability. It functions as a potent anxiolytic and nootropic compound with demonstrated effects on GABAergic, dopaminergic, and serotonergic neurotransmission. Originally developed by the Institute of Molecular Genetics of the Russian Academy of Sciences and approved for anxiety disorder treatment in Russia, it exhibits neuroprotective, immunomodulatory, and cognitive-enhancing properties without the side effects typical of benzodiazepines.