List of top Pharmacology Questions on Pharmacology of cardiovascular system asked in National Eligibility Cum Entrance Examination Post Graduate

Name the drug that acts on both the marked areas.

A chronic smoker was on nicotine replacement therapy and clonidine tablets for smokingde-addiction. He stopped taking clonidine tablets and now presents with a headache. What is the reason behind this condition?

The true statement among the following is___