# Dihexa > Angiotensin IV analog researched for synaptogenesis. Source: https://peptides.cafe/peptide/dihexa Category: Nootropic · Synaptogenesis Tag: Cognition ## Mechanism A hexapeptide derived from angiotensin IV that crosses the blood-brain barrier and potentiates hepatocyte growth factor (HGF) / c-Met signaling, associated with new synapse formation in preclinical models. ## Research areas - Synaptogenesis and dendritic spine density - Alzheimer's and cognitive aging models - Memory consolidation in rodents ## Common research protocols - Oral/transdermal research: Investigational dosing in animal cognition studies; human data are minimal. ## Study summaries - "Dihexa, a potent procognitive HGF mimetic" — Journal of Pharmacology and Experimental Therapeutics (2012): Robust improvements in spatial learning in aged rodent models. ## Considerations - No human clinical trial data; theoretical proliferation concerns via HGF/c-Met. - Not FDA-approved. ## Disclaimer Educational content only. Not medical advice, diagnosis, or treatment. Most research peptides are not FDA-approved for human therapeutic use. Consult a licensed clinician before any use.