Which gastrointestinal side effects were most commonly reported in clinical studies of Durogesic DTrans fentanyl patches?

For Durogesic DTrans fentanyl patches, the most common gastrointestinal effects were nausea (35.7%), vomiting (23.2%) and constipation (23.1%) in pooled adult/paediatric studies; in paediatric-only studies, they were vomiting (33.9%), nausea (23.5%), constipation (13.5%) and diarrhoea (12.8%).