Based on the things I've heard/read about Cylert, I'm surprised your dr prescribed it (before giving another -- safer -- stimulant a try). Cylert is really tough on your liver. Methylphenidate (Ritalin/Concerta) has been around forever & has proven to be really effective for a lot of people (children & adults alike). Same with amphetamines (Adderall/Dexedrine). However, a dr might be hesitant to prescribe these drugs because they've been extensively abused. Personally, my family dr was hesitant about prescribing stims until I was evaluated by a specialist. The specialist then put me on Adderall & I've been on it ever since.

Talk to your dr about your concerns. Hope everything works out.