- 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
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Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.
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Showing 1–15
of 15
matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
- Conditions
- Huntington's Disease, Parkinson's Disease, Dementia With Lewy Bodies, Sleep Disorders, Circadian Dysregulation
- Interventions
- Ramelteon, Placebo
- Drug
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 20 Years to 90 Years
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2010
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- 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
- Sleep Apnea, Obstructive
- Interventions
- Ramelteon or Placebo
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 21 Years to 64 Years
- Enrollment
- 26 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2003
- U.S. locations
- 5
- States / cities
- Birmingham, Alabama • Palm Springs, California • Santa Monica, California + 2 more
- Conditions
- Chronic Insomnia
- Interventions
- Ramelteon and zolpidem, Placebo and zolpidem
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 135 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2007 – 2008
- U.S. locations
- 41
- States / cities
- Hot Springs, Arkansas • Anaheim, California • Fountain Valley, California + 38 more
- Conditions
- Tobacco Use Disorder
- Interventions
- Ramelteon, Placebo
- Drug
- Lead sponsor
- University of Pennsylvania
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 140 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2018
- U.S. locations
- 1
- States / cities
- Philadelphia, Pennsylvania
- Conditions
- Delirium
- Interventions
- Ramelteon, Placebo - Cap
- Drug
- Lead sponsor
- Rhode Island Hospital
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 112 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2022
- U.S. locations
- 1
- States / cities
- Providence, Rhode Island
- 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
- Insomnia
- Interventions
- Ramelteon, zolpidem and placebo
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 65 Years and older
- Enrollment
- 33 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2006
- U.S. locations
- 6
- States / cities
- Costa Mesa, California • San Diego, California • Miami, Florida + 3 more
- Conditions
- Insomnia, Bipolar Disorder
- Interventions
- Ramelteon, Placebo
- Drug
- Lead sponsor
- Lindner Center of HOPE
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 21 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2007 – 2010
- U.S. locations
- 1
- States / cities
- Mason, Ohio
- 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
- Drug Abuse
- Interventions
- Ramelteon, triazolam, and placebo (56 possible combinations total)
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 18 Years to 60 Years
- Enrollment
- 14 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2003
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
- 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
- Chronic Obstructive Pulmonary Disease, COPD
- Interventions
- Ramelteon and Placebo
- Drug
- Lead sponsor
- Takeda
- Industry
- Eligibility
- 21 Years and older
- Enrollment
- 26 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2003 – 2004
- U.S. locations
- 6
- States / cities
- Birmingham, Alabama • Santa Monica, California • Miami Beach, Florida + 3 more
- Conditions
- Panic Disorder, Insomnia
- Interventions
- Placebo and Escitalopram, Ramelteon and Escitalopram
- Drug
- Lead sponsor
- Milton S. Hershey Medical Center
- Other
- Eligibility
- 18 Years to 50 Years
- Enrollment
- 11 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2010
- U.S. locations
- 1
- States / cities
- Hershey, Pennsylvania