Thanks for the reply, zuzu.
I am taking other meds than Concerta and you're right, maybe they, combined with Concerta, are clashing and causing the sexual dysfunction. I'm taking Risperdal and Lamictal for bipolar disorder. My psychiatrist just put me on Concerta because he recently diagnosed me as ADHD. Should I tell him about the sexual problems I am having? I have also been staying up all night since I started Concerta. But the doc put me on Ambien for the sleep thing. When I take the Ambien I can usually get to sleep but I sleep sometimes for 14 to 15 hours at a time. Maybe I should tell the doctor about this.
Thanks,
Chris

Yes you need to tell your doc all of your symptoms. Your doc is not a mind reader and has not way of knowing that you are having trouble with side effects if you don't tell him. Be sure to mention how long you sleep when you take the ambien too as he may want to change the dose or the med since that is a long time to sleep. Call your doc today and let him know what is going on so he can make any necessary changes.