Lanoxin (digoxin) Injection Adult, 10 Ampuls, 2 mLLanoxin (digoxin) injection is used to treat heart failure and atrial fibrillation in adults. It helps improve the strength and efficiency of the heart by increasing the force of myocardial contractions and regulating heart rhythm. By inhibiting the sodium potassium ATPase enzyme, it enhances cardiac output and controls ventricular rate in atrial fibrillation. This improves blood circulation and reduces symptoms like fatigue and shortness of breath.