From: Palliation of chronic breathlessness with morphine in patients with fibrotic interstitial lung disease – a randomised placebo-controlled trial
Morphine group
Placebo group
Side effect
Baseline
Follow-up
Constipation
2
7*
Nausea
7
8*
3
4
Headache
10
5
Dizziness
12
8
Confusion
Other
0
7 (1 vomiting)