Lanoxin contains 0.25mg of digoxin as its active ingredient. It is widely used for treating heart failure and specific types of irregular heartbeats (arrhythmias). By improving heart efficiency and restoring a normal heart rhythm, Lanoxin helps alleviate symptoms and enhances overall heart function. Manufactured by numerous pharmaceutical companies, this medication is also sold under alternative brand names like Healthy Digxin, Digioxin, and Dixin.