PRC-063 Adult Laboratory Classroom Study in Adults With ADHD

Inclusion Criteria:

1. Males or females 18 to 60 years of age

2. Diagnosis of ADHD (any type: combined, predominately hyperactive impulsive type or
predominately inattentive type) by a psychiatrist, psychologist, or licensed allied
healthcare professional

3. Subject is willing and able to comply with all the protocol requirements.

Exclusion Criteria:

1. Primary and/or comorbid psychiatric diagnosis other than ADHD

2. Has a current or recent history of hypertension, symptomatic cardiovascular disease,
advanced arteriosclerosis, structural cardiac abnormality, cardiomyopathy, serious
heart rhythm abnormalities, coronary artery disease, or other serious cardiac problems
that may place them at increased vulnerability to the sympathomimetic effects of a
stimulant drug;

3. Has used any investigational drug within 30 days of the screening visit;