Dihexa (also known as PNB 0408) is an experimental small molecule derived from angiotensin IV. It was engineered to cross the bloodbrain barrier and has shown synaptogenic effects in preclinical models. The often quoted AngIV Analog Dihexa Rescues Cognitive Impairment and Recovers Memory in the APP PS1 Mouse via the PI3K AKT Signaling Pathway Dihexa Brain peptides in Alzheimer's disease pathophysiology and therapeutic advances Cell and Tissue Research Springer Nature Link EllieMD Dihexa DIHEXA is a neurogenic peptide designed to enhance cognitive function by increasing synaptic density in the brain. Unlike stimulants that offer temporary boosts, Dihexa supports long term brain health improving communication between