This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hypeension, Subject name: Medicine
Elderly male patient has presented with recurrent falls. Which of the following medicines is responsible? 
Select and explain. 
A. Prazocin, B. Metformin, C. Acarbose, D. Thiazides
A: Prazocin
Answer: A: Prazocin 
Explanation: Prazocin is Antihypeensive drug | a1 -adrenergic antagonist. | leads to Ohostatic Hypotension & syncope