Try our beta test site
IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more...

Efficacy of Ramelteon on Transient Insomnia in Healthy Adults

This study has been completed.
Information provided by (Responsible Party):
Takeda Identifier:
First received: May 1, 2008
Last updated: February 27, 2012
Last verified: February 2012
The purpose of this study is to evaluate the safety and efficacy of Ramelteon, once daily (QD), in healthy subjects within a sleep lab.

Condition Intervention Phase
Transient Insomnia
Drug: Ramelteon
Drug: Placebo
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Phase III, Randomized, Double-Blind, Placebo-Controlled, Multicenter, Single-Dose Study of TAK-375 in Healthy Adult Volunteers in a Sleep Lab Model of Transient Insomnia

Resource links provided by NLM:

Further study details as provided by Takeda:

Primary Outcome Measures:
  • Latency to Persistent Sleep from 1 night of polysomnography (PSG) recording in a sleep laboratory. [ Time Frame: Day 1 ]

Secondary Outcome Measures:
  • Total Sleep Time. [ Time Frame: Days 1 and 2. ]
  • Sleep Efficiency. [ Time Frame: Days 1 and 2. ]
  • Wake Time after Persistent Sleep Onset. [ Time Frame: Days 1 and 2. ]
  • Number of Awakenings after Persistent Sleep. [ Time Frame: Days 1 and 2. ]
  • Subjective Sleep Latency. [ Time Frame: Day 2 ]
  • Subjective Total Sleep Time. [ Time Frame: Day 2 ]
  • Subjective Sleep Quality. [ Time Frame: Day 2 ]
  • Subjective Wake Time after Sleep Onset. [ Time Frame: Day 2 ]
  • Subjective Number of Awakenings. [ Time Frame: Day 2 ]
  • Subjective Ease of Falling Back to Sleep after Awakening. [ Time Frame: Day 2 ]
  • Stage 1 Nonrapid Eye Movement (NREM) Sleep [ Time Frame: Day 2. ]
  • Stage 2 Nonrapid Eye Movement (NREM) Sleep [ Time Frame: Day 2. ]
  • Stage 3/4 Nonrapid Eye Movement (NREM) Sleep [ Time Frame: Day 2. ]
  • Latency to Rapid Eye Movement (REM) Sleep [ Time Frame: Day 2. ]
  • Percentage of Total Sleep Time in REM Sleep [ Time Frame: Day 2. ]

Enrollment: 289
Study Start Date: December 2002
Study Completion Date: May 2003
Primary Completion Date: May 2003 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Ramelteon 8 mg QD Drug: Ramelteon
Ramelteon 8 mg, tablets, orally for one night only.
Other Names:
  • Rozerem™
  • TAK-375
Experimental: Ramelteon 16 mg QD Drug: Ramelteon
Ramelteon 16 mg, tablets, orally for one night only
Other Names:
  • Rozerem™
  • TAK-375
Placebo Comparator: Placebo Drug: Placebo
Ramelteon placebo-matching tablets, orally for one night only

Detailed Description:

Insomnia is characterized by difficulties initiating and maintaining sleep, or of non-restorative and non-refreshing sleep. Transient insomnia affects approximately one-third to one-half of the US population, based on the results of 2 surveys of representative samples of the adult US population conducted by the Gallup Organization in which respondents were asked if they had "ever had difficulty sleeping." Based on reports of "regular" or "frequent" sleep difficulty, results from the same studies suggest that approximately one-tenth of the US population experiences chronic insomnia. The ideal treatment for insomnia would reduce the latency to onset of sleep and increase total sleep time, without a negative impact on sleep architecture and without safety concerns or next-day effects.

Ramelteon is a selective melatonin-1 receptor agonist under global development by Takeda Chemical Industries, Ltd., for the treatment of transient and chronic insomnia and for the treatment of Circadian Rhythm Sleep Disorders.

This study is being conducted to evaluate the safety and efficacy of a single dose of Ramelteon in normal healthy subjects in a sleep lab model of transient insomnia. Participation is this study is anticipated to be about 3 weeks.


Ages Eligible for Study:   18 Years to 64 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria

  • Females of childbearing potential who are sexually active must agree to use adequate contraception, and can neither be pregnant nor lactating from Screening throughout the duration of the study.
  • Habitual bedtime is between 8:30 p.m. and 12:00 a.m.
  • Sleeps 6.5 to 8 hours per night and has a subjective sleep latency of less than or equal to 30 minutes.
  • Body mass index between 18 and 34, inclusive.

Exclusion Criteria:

  • Any history of insomnia.
  • Spent one or more nights in a sleep laboratory.
  • Epworth Sleepiness Scale score of greater than 10.
  • Known hypersensitivity to Ramelteon or related compounds, including melatonin.
  • Previously participated in a study involving Ramelteon.
  • Participated in any other investigational study and/or taken any investigational drug within 30 days or five half-lives prior to Day 1, whichever is longer.
  • Sleep schedule changes required by employment (ie, shift work) within three months preceding Day 1 or has flown across greater than three time zones within seven days prior to screening.
  • Participated in a weight loss program or substantially altered their exercise routine within 30 days prior to Day 1.
  • History of seizures, sleep apnea, chronic obstructive pulmonary disease, restless leg syndrome, schizophrenia, bipolar disorder, mental retardation, or cognitive disorder.
  • History of a psychiatric disorder (including anxiety or depression) within the past 12 months.
  • History of drug addiction or drug abuse within the past 12 months.
  • Any physical or psychiatric disorder that may be associated with sleep disturbance.
  • History of alcohol abuse within the past 12 months, as defined in Diagnostic and Statistical Manual of Mental Disorders, 4th Edition Revised and/or regularly consumes 4 or more alcoholic drinks per day.
  • Current significant neurological, hepatic, renal, endocrine, cardiovascular, gastrointestinal, pulmonary, hematologic or metabolic disease.
  • Uses tobacco products during nightly awakenings.
  • Any clinically important abnormal finding as determined by a medical history, physical examination, electrocardiogram, or clinical laboratory tests, as determined by the investigator.
  • Positive hepatitis panel.
  • Positive urine drug screen including alcohol at screening or a positive breathalyzer test at check-in.
  • Any additional condition(s) that in the investigator's opinion would

    • affect sleep-wake function
    • prohibit the subject from completing the study
    • not be in the best interest of the subject.
  • Is required to take or continues taking any disallowed medication, prescription medication, herbal treatment or over-the counter medication, including:

    • Anxiolytics
    • Hypnotics
    • Antidepressants
    • Anticonvulsants
    • Sedating H1 antihistamines
    • Systemic steroids
    • Respiratory stimulants (eg, theophylline)
    • Decongestants
    • Over-the-counter and prescription stimulants
    • Over-the-counter and prescription diet aids
    • Central nervous system active drugs
    • Narcotic analgesics
    • All beta blockers
    • St. John's Wort
    • Kava-kava
    • gingko biloba
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00671398

United States, California
Palm Springs, California, United States
San Diego, California, United States
United States, Florida
Miami, Florida, United States
Pembroke Pines, Florida, United States
United States, Georgia
Atlanta, Georgia, United States
United States, Kansas
Overland Park, Kansas, United States
United States, New York
New York, New York, United States
Rochester, New York, United States
United States, Ohio
Cincinnati, Ohio, United States
Dublin, Ohio, United States
United States, South Carolina
Columbia, South Carolina, United States
United States, Texas
Houston, Texas, United States
Sponsors and Collaborators
Study Director: VP Clinical Science Takeda
  More Information

Additional Information:
Responsible Party: Takeda Identifier: NCT00671398     History of Changes
Other Study ID Numbers: 01-02-TL-375-023
U1111-1114-8626 ( Registry Identifier: WHO )
Study First Received: May 1, 2008
Last Updated: February 27, 2012

Keywords provided by Takeda:
Sleep Disorder
Drug Therapy

Additional relevant MeSH terms:
Sleep Initiation and Maintenance Disorders
Sleep Disorders, Intrinsic
Sleep Wake Disorders
Nervous System Diseases
Mental Disorders processed this record on April 28, 2017