Efficacy of paracetamol added to WHO step III opioids in chronic pain control: study protocol for a randomised, double-blind, placebo-controlled, non-inferiority, multicentre study in Switzerland.

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Title: Efficacy of paracetamol added to WHO step III opioids in chronic pain control: study protocol for a randomised, double-blind, placebo-controlled, non-inferiority, multicentre study in Switzerland.
Authors: Kotoula C; Clinical Pharmacology and Toxicology, Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.; Graduate School for Health Sciences, University of Bern, Bern, Switzerland., Wertli MM; Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.; Department of Internal Medicine, Cantonal Hospital Baden, Baden, Switzerland., Streitberger K; Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland., Rothschild SI; Center of Oncology/Hematology, Cantonal Hospital Baden, Baden, Switzerland.; Medical Faculty, University of Basel, Basel, Switzerland., Limacher A; Department of Infectious Diseases, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.; Functioning Information Reference Lab, Swiss Paraplegic Research, Nottwil, Switzerland., Hammann F; Clinical Pharmacology and Toxicology, Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland., Krähenbühl S; Division of Clinical Pharmacology & Toxicology, University Hospital Basel, Basel, Switzerland., Haschke M; Clinical Pharmacology and Toxicology, Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland., Liakoni E; Clinical Pharmacology and Toxicology, Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland evangelia.liakoni@insel.ch.
Source: BMJ open [BMJ Open] 2025 Dec 31; Vol. 15 (12), pp. e107360. Date of Electronic Publication: 2025 Dec 31.
Publication Type: Journal Article; Clinical Trial Protocol
Journal Info: Publisher: BMJ Publishing Group Ltd Country of Publication: England NLM ID: 101552874 Publication Model: Electronic Cited Medium: Internet ISSN: 2044-6055 (Electronic) Linking ISSN: 20446055 NLM ISO Abbreviation: BMJ Open Subsets: MEDLINE
Database: MEDLINE Ultimate
Description
ISSN:2044-6055
DOI:10.1136/bmjopen-2025-107360