Answer
Caution is advised because mirabegron moderately inhibits CYP2D6, while flecainide has a narrow therapeutic index and is significantly metabolised by CYP2D6.
Sources for this answer
- Mirabegron Astellas 25mg & 50mg prolonged-release tabletsAstellas Pharma Ltd · emc · SmPC §4.5 Interaction with other medicinal products · Version 14Document updated
Sources checked