I take Vyvanse and Lexapro. I've had no such effects--though I think those kinds of effects are more common in younger adults and children.

By the way--I've been doing some research lately in neurology--and have come across a book by a russian psychologist, called "The Mnemonist"--which describes a case in which his patient had a "infinite" memory. The person apparently used "images" in his head to accomplish this unbelievable feat. You mentioned your son's racing thoughts, amounting to a great number of "images" in his head. I'm not saying there is a connection--but thought I would bring it up! I wish you the best of luck--and, if I were you--would keep a good eye on him, and communicate frequently with your doctor regarding the meds.