What is the therapeutic range for digoxin?

The therapeutic range for digoxin is typically 0.5 to 2.0 ng/mL. This range is important because digoxin, a medication used commonly in heart failure and atrial fibrillation, has a narrow therapeutic window. This means that levels outside of this range can lead to insufficient therapeutic effects or increase the risk of toxicity.

Levels at or below 0.5 ng/mL may not provide adequate heart rate control or improve cardiac output in patients who require it, while levels above 2.0 ng/mL significantly increase the risk for serious adverse effects, including digoxin toxicity, which can lead to life-threatening arrhythmias. Thus, maintaining serum digoxin levels within 0.5 to 2.0 ng/mL is crucial for maximizing therapeutic benefits while minimizing potential risks.