- Conditions
- Sleep Quality Post-TKA, Postoperative Knee Function, Quality of Life After Primary TKA
- Interventions
- Doxepin 6 mg, Ramelteon 8 mg, Placebo Tablets
- Drug
- Lead sponsor
- University of Washington
- Other
- Eligibility
- 18 Years to 80 Years
- Enrollment
- 129 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2026 – 2028
- U.S. locations
- 1
- States / cities
- Seattle, Washington
Search Results
Search by objective public record fields.
Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.
These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Showing 1–24
of 40
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Chronic Insomnia
- Interventions
- Ramelteon, Placebo
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 18 Years to 64 Years
- Enrollment
- 405 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2003
- U.S. locations
- 25
- States / cities
- Birmingham, Alabama • Scottsdale, Arizona • Hot Springs, Arkansas + 22 more
- Conditions
- Delirium
- Interventions
- Ramelteon, Citicoline
- Drug
- Lead sponsor
- University of Texas Southwestern Medical Center
- Other
- Eligibility
- 18 Years and older
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2017
- U.S. locations
- 1
- States / cities
- Dallas, Texas
- Conditions
- Sleep Disorder
- Interventions
- Ramelteon, Placebo
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 18 Years to 45 Years
- Enrollment
- 75 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2005
- U.S. locations
- 13
- States / cities
- Hot Springs, Arkansas • Los Angeles, California • San Diego, California + 10 more
- Conditions
- Chronic Insomnia
- Interventions
- Ramelteon and Placebo (9 possible combinations total)
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 65 Years and older
- Enrollment
- 100 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2002 – 2003
- U.S. locations
- 18
- States / cities
- Hot Springs, Arkansas • Irvine, California • Palm Springs, California + 15 more
- Conditions
- Chronic Insomnia
- Interventions
- Ramelteon, Placebo
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 451 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2006
- U.S. locations
- 19
- States / cities
- Birmingham, Alabama • Hot Springs, Arkansas • Los Angeles, California + 16 more
- Conditions
- Chronic Insomnia
- Interventions
- Ramelteon, Placebo
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 18 Years to 64 Years
- Enrollment
- 848 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2002 – 2003
- U.S. locations
- 70
- States / cities
- Birmingham, Alabama • Mobile, Alabama • Mesa, Arizona + 67 more
- Conditions
- Delirium, Delirium, Dementia, Amnestic, Cognitive Disorders, Delayed Emergence From Anesthesia, Cognitive Disorders
- Interventions
- Ramelteon, Microcrystalline Cellulose, Riboflavin 100 mg
- Drug
- Lead sponsor
- Johns Hopkins University
- Other
- Eligibility
- 65 Years and older
- Enrollment
- 80 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2019
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
- Conditions
- Neuropathic Pain
- Interventions
- Ramelteon, Placebo
- Drug
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 23 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2011
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Parkinson's Disease
- Interventions
- ROZEREM, Ramelteon
- Drug
- Lead sponsor
- Southern California Institute for Research and Education
- Other
- Eligibility
- 45 Years to 85 Years
- Enrollment
- 4 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2007 – 2008
- U.S. locations
- 1
- States / cities
- Long Beach, California
- Conditions
- Sleep Initiation and Maintenance Disorders
- Interventions
- Ramelteon
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 1,213 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2003 – 2004
- U.S. locations
- 122
- States / cities
- Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 119 more
- Conditions
- Seasonal Affective Disorder
- Interventions
- Ramelteon, Placebo
- Drug
- Lead sponsor
- Lehigh Valley Hospital
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 50 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2006 – 2008
- U.S. locations
- 1
- States / cities
- Allentown, Pennsylvania
- Conditions
- Chronic Insomnia
- Interventions
- Ramelteon, Placebo
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 18 Years to 64 Years
- Enrollment
- 1,081 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005
- U.S. locations
- 43
- States / cities
- Mesa, Arizona • Phoenix, Arizona • Scottsdale, Arizona + 40 more
- Conditions
- Acute Depressive Episode
- Interventions
- Ramelteon SL, Placebo
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 18 Years to 75 Years
- Enrollment
- 490 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2015
- U.S. locations
- 141
- States / cities
- Birmingham, Alabama • Dothan, Alabama • Muscle Shoals, Alabama + 137 more
- Conditions
- Chronic Insomnia
- Interventions
- Ramelteon, Placebo
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 18 Years to 64 Years
- Enrollment
- 552 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2006 – 2007
- U.S. locations
- 52
- States / cities
- Phoenix, Arizona • Tucson, Arizona • Hot Springs, Arkansas + 49 more
- Conditions
- Bipolar Disorder
- Interventions
- Ramelteon, Placebo
- Drug
- Lead sponsor
- Lehigh Valley Hospital
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 90 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2007 – 2010
- U.S. locations
- 1
- States / cities
- Allentown, Pennsylvania
- Conditions
- ADHD With Sleep Onset Insomnia
- Interventions
- Ramelteon, Placebo
- Drug
- Lead sponsor
- University of Alabama at Birmingham
- Other
- Eligibility
- 19 Years to 65 Years
- Enrollment
- 32 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2010
- U.S. locations
- 1
- States / cities
- Birmingham, Alabama
- Conditions
- Chronic Insomnia
- Interventions
- Ramelteon, Placebo
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 55 Years and older
- Enrollment
- 74 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2006 – 2007
- U.S. locations
- 72
- States / cities
- Alabaster, Alabama • Huntsville, Alabama • Phoenix, Arizona + 69 more
- Conditions
- Delirium
- Interventions
- Ramelteon 8mg
- Drug
- Lead sponsor
- Centennial Medical Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 506 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2025
- U.S. locations
- 1
- States / cities
- Nashville, Tennessee
- Conditions
- Major Depressive Disorder, Insomnia
- Interventions
- Escitalopram, Ramelteon, Placebo
- Drug · Other
- Lead sponsor
- University of Texas Southwestern Medical Center
- Other
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 29 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2007 – 2010
- U.S. locations
- 1
- States / cities
- Dallas, Texas
- Conditions
- Obstructive Sleep Apnea
- Interventions
- Rozerem (Ramelteon), Lunesta (Eszopiclone), Historical Controls
- Drug · Other
- Lead sponsor
- Southern California Institute for Research and Education
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 90 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2010
- U.S. locations
- 1
- States / cities
- Long Beach, California
- Conditions
- Chronic Obstructive Pulmonary Disease
- Interventions
- Ramelteon and Placebo
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 40 Years and older
- Enrollment
- 25 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2006
- U.S. locations
- 8
- States / cities
- Birmingham, Alabama • Los Angeles, California • Santa Monica, California + 5 more
- Conditions
- Delirium in Old Age
- Interventions
- Ramelteon, Placebo
- Drug
- Lead sponsor
- Brigham and Women's Hospital
- Other
- Eligibility
- 65 Years and older
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Insomnia
- Interventions
- Ramelteon
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 6 Years to 50 Years
- Enrollment
- 56 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2009 – 2011
- U.S. locations
- 2
- States / cities
- Overland Park, Kansas • Kalamazoo, Michigan