Dihexa, also known as N-hexanoic-Tyr-Ile-(6) aminohexanoic amide, is an oligopeptide drug derived from angiotensin IV that binds with high affinity and potentiates its activity at its receptor, c-Met. Dihexa, also known as N-hexanoic-Tyr-Ileaminohexanoic amide, is an oligopeptide drugderived from angiotensin IV that binds with highaffinity and potentiatesits activity at its receptor, c-Met. The compound hasbeen found to potently improve cognitive function inanimal models of Alzheimer's disease-like mentalimpairment. In an assay of neurotrophic activity, Dihexa was found to be seven orders of magnitude more potent thanbrain-derived neurotrophic.