Opioid use Clinical Trials
Conditions / Opioid use
Delta Trials records 476 clinical trials for Opioid use in its publicly accessible dataset. From the full dataset, 68 actively seeking eligible participants and 281 trials have reached completion. This research is conducted across 258 study locations around the world. An additional 127 trials are active but not currently open for enrollment. Since 2020, 40 trials have been stopped, reflecting shifts in research priorities or feasibility. The trial counts on this page reflect the most recent data ingested from ClinicalTrials.gov, with history tracked across multiple versions.
Trial Status
476
Total Trials
68
Recruiting
281
Completed
127
Other Active
40
Terminated since 2020
258
Study Locations
Browse by location (258 total)
- New York, United States 30 trialsAll trials in New York, United States
- Philadelphia, United States 20 trialsAll trials in Philadelphia, United States
- Baltimore, United States 18 trialsAll trials in Baltimore, United States
- Boston, United States 17 trialsAll trials in Boston, United States
- Pittsburgh, United States 14 trialsAll trials in Pittsburgh, United States
- İstanbul, Turkey (türkiye) 12 trialsAll trials in İstanbul, Turkey (türkiye)
- Chicago, United States 12 trialsAll trials in Chicago, United States
- Istanbul, Turkey (türkiye) 12 trialsAll trials in Istanbul, Turkey (türkiye)
- Salt Lake City, United States 11 trialsAll trials in Salt Lake City, United States
- Nashville, United States 10 trialsAll trials in Nashville, United States
- Houston, United States 10 trialsAll trials in Houston, United States
- Los Angeles, United States 9 trialsAll trials in Los Angeles, United States
- Toronto, Canada 9 trialsAll trials in Toronto, Canada
- Columbus, United States 8 trialsAll trials in Columbus, United States
- La Jolla, United States 7 trialsAll trials in La Jolla, United States
- St. Louis, United States 7 trialsAll trials in St. Louis, United States
- Seattle, United States 7 trialsAll trials in Seattle, United States
- The Bronx, United States 7 trialsAll trials in The Bronx, United States
- San Francisco, United States 7 trialsAll trials in San Francisco, United States
- St. Louis, United States 7 trialsAll trials in St. Louis, United States