NUVIGIL improves wakefulness throughout the day or shift in patients with excessive sleepiness associated with treated OSA, SWD, and narcolepsy1
NUVIGIL has been studied in 4 pivotal trials.1
Studied in 1108 patients1
- In four 12-week, double-blind, randomized, placebo-controlled trials
- In patients with treated obstructive sleep apnea (OSA), shift work sleep disorder, also known as shift work disorder (SWD), and narcolepsy
Primary efficacy measures
The primary efficacy measures in the pivotal trials for NUVIGIL were the Maintenance of Wakefulness Test (MWT) or Multiple Sleep Latency Test (MSLT), and the Clinical Global Impression of Change (CGI-C).2,3
MWT4,5
An objective physiologic assessment of sleepiness that measures a subject's ability to sustain wakefulness.
- In the OSA and narcolepsy studies, a coprimary endpoint was the average of 4 MWT sessions from 9 am to 3 pm
- In the clinical studies of NUVIGIL, patients were instructed to try to remain awake in a darkened room while in a semireclined position during a series of 30-minute (for the OSA studies) or 20-minute (for the narcolepsy study) periods at scheduled times
- Sleep latency was defined as:
- 3 consecutive 30-second epochs of stage 1 sleep were reached, or
- Any single 30-second epoch of stage 2, 3, 4, or REM sleep was reached
- Epochs were individually scored using the 50% (or 16-second) rule
- If patients fell asleep, they were awakened immediately but were required to stay in bed, and they were prevented from falling asleep again for the remainder of the test session
MSLT4-7
An objective assessment of sleepiness that measures the likelihood of falling asleep.
- In the SWD study, a coprimary endpoint was the average of 4 MSLT sessions from 2 am to 8 am
- In the clinical study for NUVIGIL conducted in patients with SWD, five 20-minute (maximum) MSLT naps were performed at scheduled 2-hour intervals
- The patient was instructed to lie quietly and attempt to sleep. Each MSLT nap continued until:
- 3 consecutive 30-second epochs of stage 1 sleep were reached, or
- Any single 30-second epoch of stage 2, 3, 4, or REM sleep was reached
- Sleep latency was defined as the elapsed time from lights-out to the first epoch scored as sleep. With a 30-second scoring epoch, this criterion was reached when sleep occupied at least 16 seconds of any epoch. Each nap was terminated after 20 minutes if no sleep occurred. If patients fell asleep, they were awakened and kept awake while remaining in bed
CGI-C
A standard assessment tool used to measure the impact of symptoms or disease on a patient's overall clinical condition, as well as changes in response to treatment. Change in overall condition is assessed using the CGI-C, a 7-point scale that ranges from Very Much Improved to Very Much Worse.





