Drug of choice for paroxysmal supraventricular tachycardia is:
Verapamil decreases conduction velocity and increases the refractory period of the AV node, thus useful in PSVT. It is a CCB, Class 4 antiarrhythmic drug Adenosine and magnesium sulfate can also be used for PSVT REF: Essentials of Pharmacology KD Tripathi 8th ed.
Verapamil
Diltiazem
Digoxin
Phenytoin
Cardiovascular system