"the negative side effects were too much to deal with. i couldn&#039;t handle the irritability, agitation, depression, decreased libido and penis size, constipation, chemical odor in my excessive sweating. i couldn&#039;t remain in a deep sleep at night, feelings of helplessness and insecurities only when using strattera. sadness and i can understand how suicidal thoughts tend to develop on this medication. there was a slight increase in my concentration. after discontinuing abruptly the most intense nightmares and sleepless nights followed. good luck, i hope you&#039;re one of the fortunate ones that this medication worked for. i am a 30 yr old male."