What are digoxin tablets prescribed for
1 Review. 1 Review. Digoxin, sold under the brand name Lanoxin, is a prescription drug used to help treat irregular heartbeat and improve symptoms of fatigue caused by heart failure. Digoxin belongs to a group of drugs known as anti-arrhythmics, which work by preventing sodium from being pumped out of heart cells. Review. 1 Review. Digoxin, sold under the brand name Lanoxin, is a prescription drug used to help treat irregular heartbeat and improve symptoms of fatigue caused by heart failure. Digoxin belongs to a group of drugs known as anti-arrhythmics, which work by preventing sodium from being pumped out of heart cells.