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
The drug contraindicated in variant angina is 
Select and explain. 
A. Aspirin, B. GTN, C. Propranolol, D. Nicorandil
C: Propranolol
Answer: C: Propranolol 
Explanation: Beta blockers are contraindicated invariant or vasospastic angina as they produce vasoconstriction by blocking beta 2 receptors which produce vasodilatation Also, the unopposed action of alpha receptor activation can l.t vasoconstriction. Ref: Katzung 13th ed Pg: 203-206