Generic Adderall XR 30 mg is used for treating attention deficit Hyperactivity disorder and narcolepsy by the doctor precautions . Adderall XR 30 mg helps people to focus on attention and control behavior . These medicines start work within 30 minutes and it lasts up to 12 hours . Generic Adderall XR 30 mg common side effects are dry mouth , decreased appetite and trouble in sleep and increased heart rate and blood pressure . It can be taken with food or without food . After this tablet is taken you can concentrate on your work and normal behavior .