A comparison of verapamil, propranolol and
digoxin showed equivalent efficacy
in a small group of patients. However,
in general calcium channel blockers and beta-blockers are preferred to digoxin. Digoxin has been around for a long time! I used Digoxin over 50 years ago for my PSVT, and my recollection was that it did little to prevent episodes. There are so many newer drugs now that are far more effective.