Vistagen Therapeutics, Inc. is a clinical-stage biopharmaceutical company focused on developing and commercializing therapies for neuropsychiatric and neurological disorders. Its pipeline includes Fasedienol, an investigational pherine nasal spray in Phase III trials for social anxiety disorder in adults, and Itruvone, an odorless synthetic neuroactive pherine nasal spray in Phase IIa trials for major depressive disorder. The company also develops refisolone for vasomotor symptoms, premenstrual dysphoric disorder, and other women's health disorders; PH15 for cognitive impairment from mental fatigue; PH284 for loss of appetite in chronic disorders such as cancer cachexia; and AV-101, an oral prodrug targeting the NMDA receptor for depression and neurological disorders. Vistagen has a license and collaboration agreement with AffaMed Therapeutics to develop, manufacture, and commercialize fasedienol for anxiety-related disorders. Founded in 1998, the company is headquartered in South San Francisco, California.