Answer
Abdominal pain and diarrhoea are listed as very common gastrointestinal side effects of ivacaftor, meaning they affect at least 1 in 10 patients.
Sources for this answer
- Kalydeco 150 mg film-coated tabletsVertex Pharmaceuticals (Europe) Limited · emc · SmPC §4.8 Undesirable effects · Version 35Document updated
Sources checked