Vistagen Therapeutics, Inc., a clinical-stage biopharmaceutical company, engages in the development and commercialization of therapies for neuropsychiatric and neurological disorders. The company's product pipeline includes Fasedienol, an investigational pherine nasal spray that is in Phase III clinical trial for the treatment of anxiety in adults with social anxiety disorder; and Itruvone, an odorless synthetic investigational neuroactive pherine nasal spray, which is in Phase II clinical trial to treat major depressive disorder. It also develops PH80, an odorless and tasteless synthetic investigational pherine nasal spray that is in Phase II clinical trial for the treatment of vasomotor symptoms, including hot flashes due to menopause, premenstrual dysphoric disorder, and other women's h…