I have been taking 75 mg of Effexor XR for over a year now. My doctor recently (about a week ago) started me on 25 mg of Lopressor for HBP. Since starting the Lopressor, I have been suffering from insomnia and my sleep schedule is really messed up. Is it safe to take Effexor XR and Lopressor at the same time? Please someone help me with some answers.