Title

A Study of Zolpidem Tartrate Sublingual Tablet in Adult Patients With Insomnia
A Randomized, Double-blind, Placebo-controlled, Crossover Study of the Efficacy and Safety of Sublingual Zolpidem Tartrate Tablet in Adult Patients With Insomnia Characterized by Difficulty Returning to Sleep After Middle-of-the-Night (MOTN) Awakening
  • Phase

    Phase 3
  • Study Type

    Interventional
  • Intervention/Treatment

    zolpidem ...
  • Study Participants

    82
The purpose of this study is to evaluate sleep onset following administration of Transcept zolpidem tartrate sublingual tablet versus placebo in adult insomnia patients.
Study Started
Apr 30
2006
Primary Completion
Jul 31
2006
Study Completion
Jul 31
2006
Results Posted
Jan 20
2012
Estimate
Last Update
Feb 14
2012
Estimate

Drug zolpidem tartrate sublingual tablet 3.5mg

Zolpidem tartrate sublingual tablet 3.5 milligram administered between 2:15 and 3:15 a.m. on Night 1 and 2 of each treatment period. Participants placed the study drug under the tongue and allowed it to dissolve there for about 2 minutes, then swallowed after dissolved.

  • Other names: Intermezzo®

Drug zolpidem tartrate sublingual tablet 1.75mg

Zolpidem tartrate sublingual tablet 1.75 milligram administered between 2:15 and 3:15 a.m. on Night 1 and 2 of each treatment period. Participants placed the study drug under the tongue and allowed it to dissolve there for about 2 minutes, then swallowed after dissolved.

  • Other names: Intermezzo®

Drug Placebo

Placebo sublingual tablet administered between 2:15 and 3:15 a.m. on Night 1 and 2 of each treatment period. Participants placed the study drug under the tongue and allowed it to dissolve there for about 2 minutes, then swallowed after dissolved.

placebo/zolpidem 3.5/zolpidem 1.75 Experimental

placebo/zolpidem 1.75/zolpidem 3.5 Experimental

zolpidem 3.5/placebo/zolpidem 1.75 Experimental

zolpidem 3.5/zolpidem 1.75/placebo Experimental

zolpidem 1.75/placebo/zolpidem 3.5 Experimental

zolpidem 1.75/zolpidem 3.5/placebo Experimental

Criteria

Inclusion Criteria:

Insomnia as defined by DSM-IV criteria and supported by subject diary
Male or female between the ages of 18-64 years
Body mass index (BMI) between 18-34 kg/m^2
Females of childbearing potential must use a medically acceptable method of contraception
Capable of understanding and willing to comply with study procedures and has provided informed consent

Exclusion Criteria:

Females who are pregnant, breast-feeding or have a positive pregnancy test
Any circadian rhythm disorder including planned travel across several time zones during the study period
Known hypersensitivity to Zolpidem
Has performed regular shift work with the past several months prior to screening
An acute clinically significant illness or surgery as determined by the PI within 30 days of screening
Patients that have used any central nervous system (CNS) medication or other medication known to impact the sleep/wake cycle
A history of psychiatric disorder as defined by DSM-IV
A history of drug addiction or alcohol abuse
Any current significant disease, unless adequately controlled with a protocol allowed medication
Known history of HIV or Hepatitis B or C
Patients who have received an investigational drug within several months of screening

Summary

Zolpidem 3.5 mg

Zolpidem 1.75 mg

Placebo

All Events

Event Type Organ System Event Term

Latency to Persistent Sleep After Middle-of-the-Night Awakening as Measured by Polysomnography

Polysomnography was used to measure the time to return to persistent sleep after a middle-of-the-night (MOTN) awakening for each day of every two-day treatment period.

Zolpidem 3.5 mg

9.69
minutes (Least Squares Mean)
95% Confidence Interval: 8.06 to 11.65

Zolpidem 1.75 mg

16.89
minutes (Least Squares Mean)
95% Confidence Interval: 14.07 to 20.26

Placebo

28.12
minutes (Least Squares Mean)
95% Confidence Interval: 23.41 to 33.77

Number of Treatment Responders Based on Polysomnography Latency to Persistent Sleep After Middle-of-the-Night Awakening

Polysomnography was used to measure the time to return to persistent sleep after a middle-of-the-night (MOTN) awakening for each day of every two-day treatment period. A participant was considered to be a responder if the time to return to persistent sleep was less than twenty minutes.

Zolpidem 3.5 mg

60.0
participants

Zolpidem 1.75 mg

46.0
participants

Placebo

23.0
participants

Total Sleep Time After Scheduled Middle-of-the-Night Awakening Measured by Polysomnography

Polysomnography was used to measure the time from return to persistent sleep after a middle-of-the-night (MOTN) awakening until final awakening for each day of every two-day treatment period.

Zolpidem 3.5 mg

208.99
minutes (Least Squares Mean)
95% Confidence Interval: 200.92 to 217.38

Zolpidem 1.75 mg

197.8
minutes (Least Squares Mean)
95% Confidence Interval: 190.23 to 205.68

Placebo

183.12
minutes (Least Squares Mean)
95% Confidence Interval: 176.08 to 190.45

Average Subjective Total Sleep Time After Scheduled Middle-of-the-Night Awakening

The time from return to persistent sleep after a middle-of-the-night (MOTN) awakening until final awakening for each day of every two-day treatment period was recorded by each participant using the Treatment Morning Sleep Questionnaire.

Zolpidem 3.5 mg

172.51
minutes (Least Squares Mean)
95% Confidence Interval: 161.92 to 183.1

Zolpidem 1.75 mg

162.36
minutes (Least Squares Mean)
95% Confidence Interval: 151.87 to 172.85

Placebo

148.61
minutes (Least Squares Mean)
95% Confidence Interval: 138.07 to 159.15

Subjective Level of Refreshed Sleep

Level of refreshed sleep was rated by participants for each day of every two-day treatment period using the Treatment Morning Sleep Questionnaire. The percentage of participants within each rating category is reported. The rating scale was poor, fair, good and excellent.

Zolpidem 3.5 mg

Excellent

5.0
percentage of participants

Fair

42.5
percentage of participants

Good

35.0
percentage of participants

Poor

17.5
percentage of participants

Zolpidem 1.75 mg

Excellent

2.4
percentage of participants

Fair

41.5
percentage of participants

Good

34.1
percentage of participants

Poor

22.0
percentage of participants

Placebo

Excellent

3.7
percentage of participants

Fair

44.4
percentage of participants

Good

19.8
percentage of participants

Poor

32.1
percentage of participants

Polysomnography Wake Time After Sleep Onset Following Middle-of-the-Night Awakening

Amount of time awake after sleep onset following a middle-of-the-night awakening was measured by polysomnography for each day of every two-day treatment period.

Zolpidem 3.5 mg

15.06
minutes (Least Squares Mean)
95% Confidence Interval: 12.54 to 18.08

Zolpidem 1.75 mg

15.81
minutes (Least Squares Mean)
95% Confidence Interval: 13.18 to 18.97

Placebo

15.71
minutes (Least Squares Mean)
95% Confidence Interval: 13.09 to 18.86

Subjective Wake Time After Sleep Onset After Middle-of-the-Night Awakening

Amount of time awake after sleep onset following a middle-of-the-night awakening was recorded by participants using the Treatment Morning Sleep Questionnaire for each day of every two-day treatment period.

Zolpidem 3.5 mg

28.69
minutes (Least Squares Mean)
95% Confidence Interval: 24.25 to 33.94

Zolpidem 1.75 mg

29.43
minutes (Least Squares Mean)
95% Confidence Interval: 25.03 to 34.62

Placebo

34.22
minutes (Least Squares Mean)
95% Confidence Interval: 29.0 to 40.37

Polysomnography Number of Awakenings After Middle-of-the-Night Awakening

Number of times a participant awoke following sleep onset after the middle-of-the-night awakening, as measured by polysomnography for each day of every two-day treatment period.

Zolpidem 3.5 mg

3.71
number of awakenings (Least Squares Mean)
95% Confidence Interval: 3.22 to 4.19

Zolpidem 1.75 mg

3.7
number of awakenings (Least Squares Mean)
95% Confidence Interval: 3.22 to 4.18

Placebo

4.13
number of awakenings (Least Squares Mean)
95% Confidence Interval: 3.65 to 4.62

Subjective Sleep Quality Rating

Sleep quality was rated by participants for each day of every two-day treatment period using the Treatment Morning Sleep Questionnaire. The percentage of participants within each rating category is reported. The rating scale was poor, fair, good and excellent.

Zolpidem 3.5 mg

Excellent

6.3
percentage of participants

Fair

38.8
percentage of participants

Good

36.3
percentage of participants

Poor

18.8
percentage of participants

Zolpidem 1.75 mg

Excellent

2.4
percentage of participants

Fair

37.8
percentage of participants

Good

30.5
percentage of participants

Poor

29.3
percentage of participants

Placebo

Excellent

3.7
percentage of participants

Fair

42.0
percentage of participants

Good

19.8
percentage of participants

Poor

34.6
percentage of participants

Subjective Ability to Function

Ability to function was rated by participants for each day of every two-day treatment period using the Treatment Morning Sleep Questionnaire. The percentage of participants within each rating category is reported. The rating scale was poor, fair, good and excellent.

Zolpidem 3.5 mg

Excellent

6.3
percentage of participants

Fair

41.3
percentage of participants

Good

45.0
percentage of participants

Poor

7.5
percentage of participants

Zolpidem 1.75 mg

Excellent

6.1
percentage of participants

Fair

42.7
percentage of participants

Good

41.5
percentage of participants

Poor

9.8
percentage of participants

Placebo

Excellent

6.2
percentage of participants

Fair

42.0
percentage of participants

Good

33.3
percentage of participants

Poor

18.5
percentage of participants

Polysomnography Sleep Efficiency After Scheduled Middle-of-the-Night Awakening

Sleep efficiency is a measurement of the percentage of time asleep to the total time in bed. It was measured by polysomnography for each day of every two-day treatment period.

Zolpidem 3.5 mg

87.08
percentage of time asleep (Least Squares Mean)
95% Confidence Interval: 83.73 to 90.57

Zolpidem 1.75 mg

82.63
percentage of time asleep (Least Squares Mean)
95% Confidence Interval: 79.47 to 85.9

Placebo

76.31
percentage of time asleep (Least Squares Mean)
95% Confidence Interval: 73.38 to 79.35

Subjective Sleep Onset Latency After Middle-of-the-Night Awakening

Participants documented the time to return to sleep after a middle-of-the-night (MOTN) awakening for each day of every two-day treatment period using the Treatment Morning Sleep Questionnaire.

Zolpidem 3.5 mg

25.23
minutes (Least Squares Mean)
95% Confidence Interval: 21.58 to 29.49

Zolpidem 1.75 mg

28.58
minutes (Least Squares Mean)
95% Confidence Interval: 24.49 to 33.36

Placebo

40.43
minutes (Least Squares Mean)
95% Confidence Interval: 34.62 to 47.23

Subjective Number of Awakenings After Middle-of-the-Night Awakening

Number of times a participant awoke following sleep onset after the middle-of-the-night awakening, as documented by the participant for each day of every two-day treatment period using the Treatment Morning Sleep Questionnaire.

Placebo

1.14
number of awakenings (Least Squares Mean)
95% Confidence Interval: 0.94 to 1.39

Zolpidem 3.5 mg

0.86
number of awakenings (Least Squares Mean)
95% Confidence Interval: 0.7 to 1.04

Zolpidem 1.75 mg

1.03
number of awakenings (Least Squares Mean)
95% Confidence Interval: 0.85 to 1.25

Latency to Persistent Sleep After Middle-of-the-Night Awakening as Measured by Polysomnography for a Subpopulation of Participants With More Severe Insomnia

Polysomnography was used to measure the time to return to persistent sleep after a middle-of-the-night (MOTN) awakening for each day of every two-day treatment period in a subpopulation of patients with greater than 60 minutes to fall asleep after a MOTN awakening at baseline.

Zolpidem 3.5 mg

12.62
minutes (Least Squares Mean)
95% Confidence Interval: 9.12 to 17.47

Zolpidem 1.75 mg

23.28
minutes (Least Squares Mean)
95% Confidence Interval: 16.88 to 32.12

Placebo

37.89
minutes (Least Squares Mean)
95% Confidence Interval: 27.38 to 52.43

Total Sleep Time After Scheduled Middle-of-the-Night Awakening Measured by Polysomnography for Participants With More Severe Insomnia

Polysomnography was used to measure the time from return to persistent sleep after a middle-of-the-night (MOTN) awakening until final awakening for each day of every two-day treatment period in the subpopulation of patients with greater than 60 minutes to fall asleep after a MOTN awakening at baseline.

Zolpidem 3.5 mg

194.58
minutes (Least Squares Mean)
95% Confidence Interval: 179.72 to 210.65

Zolpidem 1.75 mg

179.98
minutes (Least Squares Mean)
95% Confidence Interval: 166.34 to 194.73

Placebo

166.62
minutes (Least Squares Mean)
95% Confidence Interval: 153.9 to 180.39

Total

82
Participants

Age Continuous

45.9
years (Mean)
Standard Deviation: 11.97

Body Mass Index

27.06
kilograms/square meters (Mean)
Standard Deviation: 3.718

Height

169.6
centimeters (Mean)
Standard Deviation: 9.700

Number of Nights with Middle of the Night Awakening

9.1
number of nights (Mean)
Standard Deviation: 1.20

Weight

78.25
kilograms (Mean)
Standard Deviation: 14.249

Age, Categorical

Race/Ethnicity, Customized

Region of Enrollment

Sex: Female, Male

Overall Study

Placebo/Zolpidem 3.5/Zolpidem 1.75

Placebo/Zolpidem 1.75/Zolpidem 3.5

Zolpidem 3.5/Placebo/Zolpidem 1.75

Zolpidem 3.5/Zolpidem 1.75/Placebo

Zolpidem 1.75/Placebo/Zolpidem 3.5

Zolpidem 1.75/Zolpidem 3.5/Placebo

Drop/Withdrawal Reasons

Zolpidem 1.75/Placebo/Zolpidem 3.5

Zolpidem 1.75/Zolpidem 3.5/Placebo