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: Pharmacology
[{'content': 'Which of the following is not a side effect of amitriptyline - \nSelect and explain. \nA. Constipation, B. Fine tremors, C. Weight loss, D. Dry mouth', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Weight loss TCAs (e.g. amitriptyline) cause weight gain", 'role': 'assistant'}]