I have severe anxiety and I cant sleep I am 33yr old female that weights 113lbs. I have an intense stressful life and I go to the Dr. and she gives me Lexepro. I am not depressed... I need sleep and something to help w/ my anxiety. The way I hear it is Lexepro causes insomnia and lack of sex drive which will only cause issues w/ my marriage... so why is this drug so good?