This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
[{'content': 'A patient was treated with amitriptyline for depression, developed urinary retention, constipation & blurring of vision. The most likely cause is - \nSelect and explain. \nA. Symptoms of depression persisting, B. Anticholinergic side effects, C. Depression medicamentosa, D. Any of above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Amitriptyline and other TCAs produce anticholinergic side effects which are manifested as dry mouth (↓ salivation) blurred vision, urinary retention, constipation, decreased sweating.', 'role': 'assistant'}]