Athira Pharma shares update on its ACT AD and LIFT AD studies of Alzheimer's candidate ATH 1017 Drug Discovery and Development 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 DIHEXA PEPTIDE 10MG VIAL UMBRELLA Labs ReMEDy2 Trial :: DiaMedica Therapeutics, Inc. (DMAC)