Dihexa is an experimental cognitive peptide that may help the brain build stronger connections between neurons instead of just temporarily boosting neurotransmitters like many nootropics do. It works through the HGF c Met pathway, HGF c MET pathway in cancer: from molecular characterization to clinical evidence Oncogene Small molecule activation of the neurotrophin hepatocyte growth factor to treat Alzheimer disease HGFMet Pathway in Regeneration and Drug Discovery