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
All are second generation antihistaminic except - 
Select and explain. 
A. Acrivastin, B. Cyclizine, C. Fexofenadine, D. Loratidine
B: Cyclizine
Answer: B: Cyclizine 
Explanation: Ans. is 'b' i.e., Cyclizine o Cyclizine is first generation antihistaminic. o Second generation antihistaminics are terfendine, fexofenadine, loratadine, desloratadine, cetrizine, astemizole, levocetrizine, azelastine, mizolastine, ebstine, rupatadine and acrivastin.