which of the following drug can worsen angina:: (A) Thyroxine., (B) Dipyridamole., (C) Sumatriptan., (D) All of the above.
Answer is D. Dipyridamole results in coronary steal phenomenon.Thyroxine cause tachycardia. Sumatriptan cause coronary vasoconstriciton. Hence all these drugs worsen the angina