A Study to Evaluate How VI-0521 Affect Psychomotor Performance in Healthy Overweight and Obese Subjects.

Phentermine 3.75 mg and topiramate 23 mg daily for the 1st week; Phentermine 7.5 mg and topiramate 46 mg daily for the 2nd week; Phentermine 11.25 mg and topiramate 69 mg daily for the 3rd week; Phentermine 15 mg and topiramate 92 mg daily for the 4th week

Placebo daily for 4 weeks

fruit juice