Modalert 200 (modafinil) has a comparatively low risk of producing mania; but, it may nevertheless cause manic symptoms in certain people, especially those who have a history of bipolar illness or other mood disorders. Although modafinil's main benefits are to increase alertness and cognitive performance, some people may experience mood swings, anger, or anxiety as a result of its stimulating effects on the brain. Rarely, it could make manic or hypomanic symptoms worse. It's critical to get in touch with your healthcare practitioner for additional assessment and advice if you have a history of mood problems or if you experience odd mood swings while taking Modalert 200, such as increased irritation or exhilaration.