This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Pharmacology
Side effect seen with atypical antipsychotic: 
Select and explain. 
A. Miosis, B. Weight gain, C. Akathisia, D. Dystonia
B: Weight gain
Answer: B: Weight gain 
Explanation: Ans. B. Weight gainAtypical antipsychotics act through 5HT-2 and alpha receptor with weak D2 blocking activity. They are less likely to cause EPS but they are known to cause weight gain, hyperlipidemia and diabetes. Olanzapine is known to cause the weight gain.