Answer
Grapefruit and grapefruit juice should be avoided during ceritinib (Zykadia) treatment because they may inhibit CYP3A in the gut wall and increase ceritinib’s bioavailability.
Sources for this answer
- Zykadia 150mg Film-coated TabletsNovartis Pharmaceuticals UK Ltd · emc · SmPC §4.5 Interaction with other medicinal products · Version 3Document updated
Sources checked