This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
[{'content': 'All of the following drugs are useful in destrussor instability EXCEPT: \nSelect and explain. \nA. Solefenacin, B. Tolterodine, C. Flavoxate, D. Duloxetine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ref:KD Tripathi pharmacology 7th edition (page.no: 117,118, 462) Vesicoselective drugs are used for detrusor instability resulting in urinary frequency and urge incontinence. It selectively blocks M1/M3 subtypes. Example are Oxybutynin, Tolterodine, Flavoxate, Darifenacin, Drotaverine, Solifenacin. Duloxetine is an SNRI. it is neither sedative nor anticholinergic, nor antihistaminic, nor a blocker', 'role': 'assistant'}]