Pharmacology Ketoconazole should not be given to a patient being treated with astemizole because : A Ketoconazole induces the metabolism of astemizole B Dangerous ventricular arrhythmias can occur C Astemizole inhibits the metabolism of ketoconazole D Astemizole antagonizes the antifungal action of ketoconazole 💡 Explanation Ketoconazole should not be given to a patient being treated with astemizole because : ✓ Correct Answer: B. Dangerous ventricular arrhythmias can occur