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NAD+ Coenzyme studied in neurodegeneration, cognitive decline, and sirtuin-mediated neuroprotection. View research notes → Selank Synthetic anxiolytic peptide studied in anxiety, cognitive function, and immune modulation. View research notes → Semax Semax is a synthetic heptapeptide built from the N-terminal fragment of adrenocorticotropic hormone (ACTH), specifically residues 4 through 7, extended with a Pro-Gly-Pro tripeptide to improve metabolic stability. View research notes → Tesamorelin Tesamorelin is a 44-amino acid synthetic analog of growth hormone-releasing hormone (GHRH), the hypothalamic peptide that signals the anterior pituitary to release growth hormone. View research notes →