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
Buspirone is a - 
Select and explain. 
A. Antianxiety drug, B. Antipsychotic d, C. Antidepressant drug, D. None of the a1
A: Antianxiety drug
Answer: A: Antianxiety drug 
Explanation: Ans. is 'a' i.e., Antianxiety drug Buspironeo Buspirone is the first azapirone, a new class of anxiolytic drug,o Buspirone is a non-sedative, non-habit forming anxiolytic.o It differs from BZDs.Does not produce sedation or cognitive/functional impairment.Does not produce tolerance or physical dependence.Has no muscle relaxant or anticovulsant activity.Does not act on BZD receptor or modify GABA ergic transmission,o It has partial agonistic activity on 5-HT1 A receptors.o It relieves mild to moderate generalized anxiety, but is ineffective in severe cases.