This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
[{'content': 'Which is not a side effect of lamotrigine \nSelect and explain. \nA. Diplopia, B. Dizziness, C. Decreased cognition, D. Rash', 'role': 'user'}, {'content': 'Answer: C \nExplanation: (C) Decreased cognition # Side effectsare sleepiness, dizziness, diplopia, ataxia and vomiting.> In some comparative trials lamotrigine has been found to be better tolerated than carbamazepine or phenytoin.> Negative effect on cognitive function is not reported.> Rash may be a severe reaction requiring withdrawal.', 'role': 'assistant'}]