I know someone thats on the stuff, he's overdosed (took far more than the recommended dosage) on it a few times, he described it as like taking a really small wrap of really really week speed. In other words it was a complete waste of time. I really wouldn't bother if I was you. From what I know of it the reasons its being prescribed for ADHD (what a joke that "condition" is, love the episode of south park about it *SMACK!* "Sit down and study!") instead of your normal amphetamine based medicines is exactly because it has virtually no potential for abuse.
i used to be on it, but it made me wicked tired so now they're putting me on amphetamines-based drugs, which i plan to sell. you can't abuse straterra, it won't work well.