Oral hydromorphone vs placeboLack of efficacy withdrawal in randomised double‐blind phase · adults with chronic neuropathic pain1 finding from 1 reviewHydromorphone for neuropathic pain in adults 2016 · Cochrane Headline outcomes onlyno estimate extracted1 study · 94 participantsVery low
Oral hydromorphone vs placeboAdverse event withdrawal in randomised double‐blind phase · adults with chronic neuropathic pain1 finding from 1 reviewHydromorphone for neuropathic pain in adults 2016 · Cochrane Headline outcomes onlyno estimate extracted1 study · 94 participantsVery low
Intervention not reportedLack of efficacy withdrawal in randomised double‐blind phase · Adults with chronic neuropathic pain1 finding from 1 reviewFentanyl for neuropathic pain in adults 2016 · Cochrane Headline outcomes onlyno estimate extracted1 study · 163 participantsVery low
Intervention not reportedAdverse event withdrawal in randomised double‐blind phase · Adults with chronic neuropathic pain1 finding from 1 reviewFentanyl for neuropathic pain in adults 2016 · Cochrane Headline outcomes onlyno estimate extracted1 study · 163 participantsVery low