I was diagnosed ADD/ADHD a few years ago and the medications worked wonders. 2 years later, after many frustrations, I realized that the Concerta was doing what it was suppose to be doing, and I was trying to use it as a stimulant to keep me awake(which failed). During the first 2-4 weeks my insomnia disappeared for many reasons. After that month my insomnia came back and I just figured that my honeymoon phase with the stimulant was over.
That one month stuck with me though, and here is my question: Is it possible that Modafinil can be used to treat insomnia? Not for the reasons that it is a wake-fullness promoting agent to fight the fatigue but that It gives you the ability to be alert/awake an entire day; thus expending all of your energy efficiently and allowing a complete natural sleep to occur.