Answer
Avanafil must not be taken with ketoconazole or ritonavir because co-administration with these potent CYP3A4 inhibitors is contraindicated.
Sources for this answer
- Spedra 50 mg tabletsA. Menarini Farmaceutica Internazionale SRL · emc · SmPC §4.4 Special warnings and precautions for use · Version 11Document updated
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