Efficacy and tolerability of armodafinil: effect on clinical condition late in the shift and overall functioning of patients with excessive sleepiness associated with shift work disorder.

Abstract

This study examined the effect of armodafinil on late-in-shift clinical condition, wakefulness, and overall functioning of patients with shift work disorder. Patients with clinically diagnosed shift work disorder received armodafinil or placebo on nights worked for 6 weeks. Patients included in the study experienced late-in-shift sleepiness between 4 AM and 8 AM (Karolinska Sleepiness Scale ≥6) and were functionally impaired (Global Assessment of Functioning <70). Efficacy was determined by improvements in clinical condition (Clinical Global Impression-Change), late-in-the-shift Karolinska Sleepiness Scale score, and overall Global Assessment of Functioning score. Tolerability was assessed. Patients receiving armodafinil showed significant improvements in late-in-shift clinical condition, wakefulness, and global functioning, compared to placebo at final visit. Armodafinil was generally well tolerated. Armodafinil improved clinical condition and wakefulness late in the night shift of patients with shift work disorder. Overall patient functioning was also improved.