This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Local and Regional Anesthesia), Subject name: Anaesthesia
Vasoconstriction is seen with 
Select and explain. 
A. Lignocaine, B. Cocaine, C. Idiotocaine, D. Bupivacaine
B: Cocaine
Answer: B: Cocaine 
Explanation: Ans. is 'b' i.e. cocaine All local anaesthetic cause vasodilation except for cocaine which causes vasoconstriction.