Vistagen Therapeutics, Inc. is a neuroscience-focused biopharmaceutical company. The Company is engaged in the development and commercialization of therapies for psychiatric and neurological disorders based on its understanding of nose-to-brain neurocircuitry. Its clinical-stage pipeline consists of intranasal product candidates from a new class of potential neuroscience therapies called pherines. Its diversified pipeline of pherine product candidates rapidly activate chemosensory neurons in the nasal cavity to impact fundamental neurocircuitry in the olfactory system and the brain. Its pipeline also includes an oral prodrug with potential to modulate N-methyl-D-aspartate receptor (NMDA) receptor activity. Its neuroscience pipeline includes five clinical-stage investigational agent, namely Fasedienol (PH94B), Itruvone (PH10), AV-101, PH15, PH80, and PH284.