SWD is a medical condition that can be diagnosed and treated by a doctor1-4
SWD occurs when your body's internal sleep-wake clock is out of sync with your work schedule—your body is telling you to go to sleep when your work schedule needs you to stay awake.
If you work non-traditional hours and struggle to stay awake at work, you may be experiencing excessive sleepiness (ES) due to SWD.
People with ES due to SWD often struggle to stay awake during their waking hours, or have trouble sleeping during their sleeping hours.

What are the consequences of shift work disorder?
SWD can lead to other issues2,5:
- Trouble focusing
- Sleepiness-related accidents
- Reduced work performance
- Missed family and social activities
- Impaired functioning
- Increased irritability
- Worsening of heart and stomach disorders
NUVIGIL® (armodafinil) Tablets [C-IV] have not been demonstrated to affect all of these potential consequences of SWD.
Who is at risk for shift work disorder?
ES due to SWD can affect anyone working nights, early mornings, or rotating shifts. A wide range of occupations require either permanent or occasional shift work.
While SWD can affect men and women of all ages, some factors may cause even greater problems coping with symptoms6:
- Age greater than 50 years
- History of sleep disorders
- History of stomach disorders
- Diabetes
- Heart disease6
While NUVIGIL is used to improve wakefulness in patients with ES due to SWD, it is not used to treat SWD itself or its other symptoms or consequences.7
How common is shift work disorder?
Approximately 15 million Americans work outside of the traditional 9 to 5 schedule. 1 in 4 of these workers may have SWD.1,4
ES in shift workers3

Many of these shift workers with excessive sleepiness may suffer from SWD8
Are you working shifts?
If you work night, early morning, or rotating shifts, your work schedule may be causing your circadian rhythm to be out of sync. Nonstandard shifts have become very common in today’s workplace.
1
While NUVIGIL is used to improve wakefulness in patients with ES due to SWD, it is not used to treat SWD itself or its other symptoms or consequences.