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
Which of the following calcium channel blocker has a predominant peripheral action: September 2006 
Select and explain. 
A. Verapamil, B. Diltiazem, C. Nifidepine, D. Depranil
C: Nifidepine
Answer: C: Nifidepine 
Explanation: Ans. C: Nifidepine Sublingual nifedipine has previously been used in hypeensive emergencies. This was found to be dangerous, and has been abandoned. Sublingual nifedipine causes blood-pressure lowering through peripheral vasodilation. It can cause an uncontrollable decrease in blood pressure, reflex tachycardia, and a steal phenomenon in ceain vascular beds