This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
Which of the following drugs should not be used in setting FCB hypeension in elderly in empirical basis 
Select and explain. 
A. Enalapril, B. Amilodipine, C. Chlohiazide, D. Prazosin
D: Prazosin
Answer: D: Prazosin 
Explanation: Refer CMDT 2010/409 Prazosin should be avoided as a first line choice due to risk of postural hypeension