An Open-Label Study of the Tolerability of Mixed Amphetamine Salts in Adults With Attention-Deficit/Hyperactivity Disorder and Treated Primary Essential Hypertension

Objective: To evaluate the short-term tolerability of an extended-release preparation of the stimulant medication mixed amphetamine salts (MAS XR) in adults with attention-deficit/hyperactivity disorder (ADHD) whose hypertension has been successfully treated with antihypertensive medications. Method: An 8-week, 2-phase, open-label study design was implemented. All adults had ADHD (DSM-IV diagnosis) and essential hypertension and were required to be normotensive (blood pressure 140/90 mm Hg at 2 consecutive visits) was observed in the subjects treated with MAS XR. Similar rates of single episodes of hypertension were observed in phases 1 and 2. Similarly, there was no group mean increase in systolic or diastolic blood pressure or pulse during treatment with MAS XR. No clinically significant changes in the ECG were observed. During the 6-week medication phase, significant improvement was found on rating scales assessing ADHD symptoms and severity that reversed with discontinuation of MAS XR. Conclusion: The results of this open study suggest that adults with ADHD and controlled hypertension can be safely treated with MAS XR.