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': 'Doxylamine used in management of nausea and vomiting is marketed with which vitamin ? \nSelect and explain. \nA. Thiamine, B. Riboflavin, C. Niacin, D. Pyridoxine', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is'd'i.e., PyridoxineDoxylamineSedative H1 antihistamine with prominent anticholinergic activity. Marketed in combination with pyridoxine, it is specifically promoted in India for 'morning sickness' (vomiting of early pregnancy), although such use is not made in the UK and many other countries.", 'role': 'assistant'}]