Drug: Placebos: chronic pain clinical trials

Registry records that list "Drug: Placebos" as an intervention. Being studied does not mean an intervention works or is approved.

Trials with Canadian sites

Recruiting in Canada

Registry records in total

Trials in Canada

3 trials, 0 recruiting or not yet recruiting. Recruiting first.

		Phase	Provinces
Nabilone Use For Acute Pain in Inflammatory Bowel Disease Patients NCT03422861	Unknown status	Not applicable	Ontario	Samuel Lunenfeld Research Institute, Mount Sinai Hospital	2023-12
Accuracy and Efficacy of Trazodone (Desyrel) on Sleep Quality and Pain Management of TMD Patient NCT03522207	Terminated	Phase 4	Quebec	Centre hospitalier de l'Université de Montréal (CHUM)	2018-10-15
Accuracy and Efficacy of Trazodone (Desyrel) on Sleep Quality and Pain Management of TMD Patient NCT03522207	Terminated	Phase 4	Quebec	Centre hospitalier de l'Université de Montréal (CHUM)	2018-10-15

9 trials, 0 recruiting or not yet recruiting. Recruiting first.

		Phase	Countries
Sulfasalazine in Decreasing Opioids Requirements in Breast Cancer Patients NCT03847311	Completed	Phase 2	United States	University of Arizona	2021-05-03
Dexmedetomidine-Ketamine Infusion in Breast Surgeries NCT04048226	Completed	Phase 4	Egypt	Tanta University	2019-09-01
Tolerability, Safety and Pharmacokinetics of a Topical AB001 Patch in Healthy Subjects NCT03997734	Completed	Phase 1	China	Frontier Biotechnologies Inc.	2019-06-24
Ketamine's Efficiency in the Treatment of Chronic Pain: Kynurenin Pathway NCT03513822	Unknown status	Phase 3	France	Redar	2018-02-16
Treatment of Chronic Pain With Cannabidiol (CBD) and Delta-9-tetrahydrocannabinol (THC) NCT03215940	Completed	Early phase 1	United States	University of Utah	2018-02-01
Trial of Dronabinol and Vaporized Cannabis in Chronic Low Back Pain NCT02460692	Completed	Phase 2	United States	University of California, San Diego	2016-12
Effect of Ketamine on Opioid-Induced Hyperalgesia NCT00833755	Completed	Not applicable	United States	Massachusetts General Hospital	2008-09
Is Paracetamol an Effective Treatment for Chronic Moderate Pain in the Newborn After Operative Vaginal Delivery? NCT00488540	Completed	Phase 4	Switzerland	University Hospital, Basel, Switzerland	2007-06
Are Paraspinous Intramuscular Injections of Botulinum Toxin A (BoNT-A) Efficient in the Treatment of Chronic Low-back Pain (LBP)? NCT03181802	Completed	Phase 3	France	University Hospital, Bordeaux	2003-11-18

Source: ClinicalTrials.gov (US National Library of Medicine), snapshot October 2026. Check the registry for current recruiting status.