I am a 20 year old college student, and I have been taking adderal for approximatly 4 months at 20 to 30 mg a day. For the most part, adderal, of course, helps me get through the day more focused, alert, and I am usually happy and ambitious. Sometimes, however, I get tics and a nervous feeling in my chest, along with slight slight chest pain. Much of this may be nervousness or plasibo anxiety, but I am not sure. I do smoke cigarettes and have coffee every day, which may also increase these side effects. I am nervous for my health, but do realize that for the most part I never get these tics or nervousness in my heart. My heart rate usually does not increase and I do not have shortness of breath.