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Clinically significant drug–drug interactions involving opioid analgesics used for pain treatment in patients with cancer: a systematic review

Authors Kotlinska-Lemieszek A, Klepstad P, Haugen D

Received 20 April 2015

Accepted for publication 19 June 2015

Published 16 September 2015 Volume 2015:9 Pages 5255—5267

DOI https://doi.org/10.2147/DDDT.S86983

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 4

Editor who approved publication: Prof. Dr. Wei Duan


Aleksandra Kotlinska-Lemieszek,1 Pål Klepstad,2,3,6 Dagny Faksvåg Haugen2,4,5

1Palliative Medicine Chair and Department, University Hospital of the Lord’s Transfiguration, Karol Marcinkowski University of Medical Sciences, Poznan, Poland; 2European Palliative Care Research Centre, Faculty of Medicine, Norwegian University of Science and Technology,Trondheim, Norway; 3Department of Anaesthesiology and Intensive Care Medicine, St Olavs Hospital, Trondheim, Norway; 4Regional Centre of Excellence for Palliative Care, Haukeland University Hospital, Bergen, Norway; 5Department of Clinical Medicine K1, University of Bergen, Bergen, Norway; 6Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway

Background: Opioids are the most frequently used drugs to treat pain in cancer patients. In some patients, however, opioids can cause adverse effects and drug–drug interactions. No advice concerning the combination of opioids and other drugs is given in the current European guidelines.
Objective: To identify studies that report clinically significant drug–drug interactions involving opioids used for pain treatment in adult cancer patients.
Design and data sources: Systematic review with searches in Embase, MEDLINE, and Cochrane Central Register of Controlled Trials from the start of the databases (Embase from 1980) through January 2014. In addition, reference lists of relevant full-text papers were hand-searched.
Results: Of 901 retrieved papers, 112 were considered as potentially eligible. After full-text reading, 17 were included in the final analysis, together with 15 papers identified through hand-searching of reference lists. All of the 32 included publications were case reports or case series. Clinical manifestations of drug–drug interactions involving opioids were grouped as follows: 1) sedation and respiratory depression, 2) other central nervous system symptoms, 3) impairment of pain control and/or opioid withdrawal, and 4) other symptoms. The most common mechanisms eliciting drug–drug interactions were alteration of opioid metabolism by inhibiting the activity of cytochrome P450 3A4 and pharmacodynamic interactions due to the combined effect on opioid, dopaminergic, cholinergic, and serotonergic activity in the central nervous system.
Conclusion: Evidence for drug–drug interactions associated with opioids used for pain treatment in cancer patients is very limited. Still, the cases identified in this systematic review give some important suggestions for clinical practice. Physicians prescribing opioids should recognize the risk of drug–drug interactions and if possible avoid polypharmacy.

Keywords: opioids, pain, cancer patients, drug–drug interactions

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