What happens if you take adderall (dextroamphetamine and racemic amphetamine) for add/adhd? how would that make you feel?

Depends: If you have add/ adhd you will likely focus better, be less distractable and feel calmer. If you take it and don't have add/adhd you could develop rapid heart rate, nausea, insomnia, lack of appetite, increased sweating etc.

You may be able to: tell when a stimulant starts working each day, be more focused while it's working & feel tired or grouchy when it wears off each PM. Kids may have "rebound" symptoms of ADHD as it wears off. Therefore, it's important to know the onset, peak & duration of action of the stimulant you take. Adding a non-stimulant may make daily changes less noticeable. Discuss your response with your doctor regularly